java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:22:43,135 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:22:43,137 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:22:43,155 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:22:43,155 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:22:43,156 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:22:43,158 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:22:43,159 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:22:43,161 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:22:43,162 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:22:43,163 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:22:43,163 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:22:43,164 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:22:43,165 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:22:43,166 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:22:43,167 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:22:43,168 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:22:43,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:22:43,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:22:43,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:22:43,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:22:43,176 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:22:43,178 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:22:43,179 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:22:43,179 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:22:43,180 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:22:43,181 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:22:43,182 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:22:43,183 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:22:43,184 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:22:43,184 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:22:43,185 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:22:43,185 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:22:43,185 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:22:43,186 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:22:43,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:22:43,187 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 06:22:43,212 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:22:43,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:22:43,213 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 06:22:43,214 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 06:22:43,214 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 06:22:43,214 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 06:22:43,214 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 06:22:43,215 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 06:22:43,215 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 06:22:43,215 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 06:22:43,215 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 06:22:43,215 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 06:22:43,216 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 06:22:43,216 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 06:22:43,216 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:22:43,217 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:22:43,217 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:22:43,217 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 06:22:43,217 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 06:22:43,217 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 06:22:43,218 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:22:43,219 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 06:22:43,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:22:43,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:22:43,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 06:22:43,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 06:22:43,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:22:43,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:22:43,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 06:22:43,220 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 06:22:43,221 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 06:22:43,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 06:22:43,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 06:22:43,221 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 06:22:43,222 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 06:22:43,222 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 06:22:43,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:22:43,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:22:43,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:22:43,322 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:22:43,323 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:22:43,324 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label54_true-unreach-call.c [2018-10-27 06:22:43,386 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18271be5c/77858d2b98b6476ead0727ce70884128/FLAG47cb4e20d [2018-10-27 06:22:44,029 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:22:44,030 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label54_true-unreach-call.c [2018-10-27 06:22:44,050 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18271be5c/77858d2b98b6476ead0727ce70884128/FLAG47cb4e20d [2018-10-27 06:22:44,068 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/18271be5c/77858d2b98b6476ead0727ce70884128 [2018-10-27 06:22:44,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:22:44,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 06:22:44,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:22:44,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:22:44,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:22:44,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:44" (1/1) ... [2018-10-27 06:22:44,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6351e815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:44, skipping insertion in model container [2018-10-27 06:22:44,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:22:44" (1/1) ... [2018-10-27 06:22:44,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:22:44,215 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:22:44,944 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:22:44,949 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:22:45,275 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:22:45,299 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:22:45,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45 WrapperNode [2018-10-27 06:22:45,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:22:45,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:22:45,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:22:45,301 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:22:45,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:22:45,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:22:45,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:22:45,609 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:22:45,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... [2018-10-27 06:22:45,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:22:45,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:22:45,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:22:45,733 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:22:45,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 06:22:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 06:22:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 06:22:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 06:22:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 06:22:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:22:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:22:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 06:22:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 06:22:51,375 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:22:51,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:51 BoogieIcfgContainer [2018-10-27 06:22:51,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:22:51,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 06:22:51,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 06:22:51,381 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 06:22:51,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:22:44" (1/3) ... [2018-10-27 06:22:51,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735af324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:22:51, skipping insertion in model container [2018-10-27 06:22:51,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:22:45" (2/3) ... [2018-10-27 06:22:51,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@735af324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:22:51, skipping insertion in model container [2018-10-27 06:22:51,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:22:51" (3/3) ... [2018-10-27 06:22:51,385 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label54_true-unreach-call.c [2018-10-27 06:22:51,394 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 06:22:51,403 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 06:22:51,420 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 06:22:51,460 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 06:22:51,460 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 06:22:51,460 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 06:22:51,461 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:22:51,461 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:22:51,461 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 06:22:51,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:22:51,461 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 06:22:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 06:22:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-27 06:22:51,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:51,510 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:22:51,512 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:51,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash -332126540, now seen corresponding path program 1 times [2018-10-27 06:22:51,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:51,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:51,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:51,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:51,565 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:52,400 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:22:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:52,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:52,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:22:52,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:52,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:22:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:22:52,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:22:52,623 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 06:22:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:54,986 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-27 06:22:54,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:22:54,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2018-10-27 06:22:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:55,011 INFO L225 Difference]: With dead ends: 848 [2018-10-27 06:22:55,012 INFO L226 Difference]: Without dead ends: 534 [2018-10-27 06:22:55,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:22:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-27 06:22:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-27 06:22:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-27 06:22:55,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-27 06:22:55,118 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 173 [2018-10-27 06:22:55,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:55,119 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-27 06:22:55,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:22:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-27 06:22:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 06:22:55,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:55,129 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:22:55,129 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:55,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:55,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1662155856, now seen corresponding path program 1 times [2018-10-27 06:22:55,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:55,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:55,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:55,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:55,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:55,642 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:22:55,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:22:55,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:22:55,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:22:55,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:22:55,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:22:55,646 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-27 06:22:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:22:57,622 INFO L93 Difference]: Finished difference Result 1484 states and 2494 transitions. [2018-10-27 06:22:57,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:22:57,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2018-10-27 06:22:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:22:57,633 INFO L225 Difference]: With dead ends: 1484 [2018-10-27 06:22:57,633 INFO L226 Difference]: Without dead ends: 958 [2018-10-27 06:22:57,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:22:57,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-10-27 06:22:57,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 952. [2018-10-27 06:22:57,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-27 06:22:57,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1499 transitions. [2018-10-27 06:22:57,688 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1499 transitions. Word has length 186 [2018-10-27 06:22:57,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:22:57,689 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1499 transitions. [2018-10-27 06:22:57,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:22:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1499 transitions. [2018-10-27 06:22:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-27 06:22:57,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:22:57,696 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:22:57,696 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:22:57,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash -173836503, now seen corresponding path program 1 times [2018-10-27 06:22:57,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:22:57,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:57,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:22:57,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:22:57,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:22:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:22:57,960 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:22:58,000 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:22:58,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:22:58,000 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:22:58,001 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-27 06:22:58,004 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:22:58,068 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:22:58,068 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:22:59,185 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:22:59,187 INFO L272 AbstractInterpreter]: Visited 174 different actions 174 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 06:22:59,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:22:59,225 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:23:00,254 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 72.14% of their original sizes. [2018-10-27 06:23:00,255 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:23:00,975 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-10-27 06:23:00,975 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:23:00,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:23:00,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [5] total 18 [2018-10-27 06:23:00,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:23:00,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-27 06:23:00,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-27 06:23:00,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-10-27 06:23:00,980 INFO L87 Difference]: Start difference. First operand 952 states and 1499 transitions. Second operand 15 states. [2018-10-27 06:23:13,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:23:13,751 INFO L93 Difference]: Finished difference Result 2108 states and 3325 transitions. [2018-10-27 06:23:13,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:23:13,751 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 197 [2018-10-27 06:23:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:23:13,758 INFO L225 Difference]: With dead ends: 2108 [2018-10-27 06:23:13,759 INFO L226 Difference]: Without dead ends: 1162 [2018-10-27 06:23:13,762 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 197 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-27 06:23:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-10-27 06:23:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-10-27 06:23:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-10-27 06:23:13,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1715 transitions. [2018-10-27 06:23:13,795 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1715 transitions. Word has length 197 [2018-10-27 06:23:13,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:23:13,796 INFO L481 AbstractCegarLoop]: Abstraction has 1160 states and 1715 transitions. [2018-10-27 06:23:13,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-27 06:23:13,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1715 transitions. [2018-10-27 06:23:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-27 06:23:13,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:23:13,802 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:23:13,802 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:23:13,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:13,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1967318092, now seen corresponding path program 1 times [2018-10-27 06:23:13,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:23:13,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:13,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:23:13,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:23:13,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:23:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:23:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:23:14,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:23:14,041 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:23:14,041 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-27 06:23:14,041 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:23:14,051 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:23:14,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:23:15,493 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:23:15,494 INFO L272 AbstractInterpreter]: Visited 179 different actions 532 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:23:15,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:23:15,503 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:23:16,185 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 74.84% of their original sizes. [2018-10-27 06:23:16,186 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:23:16,576 INFO L415 sIntCurrentIteration]: We unified 205 AI predicates to 205 [2018-10-27 06:23:16,576 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:23:16,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:23:16,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [5] total 25 [2018-10-27 06:23:16,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:23:16,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 06:23:16,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 06:23:16,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2018-10-27 06:23:16,581 INFO L87 Difference]: Start difference. First operand 1160 states and 1715 transitions. Second operand 22 states. [2018-10-27 06:24:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:34,491 INFO L93 Difference]: Finished difference Result 6620 states and 11142 transitions. [2018-10-27 06:24:34,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-27 06:24:34,491 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 206 [2018-10-27 06:24:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:34,524 INFO L225 Difference]: With dead ends: 6620 [2018-10-27 06:24:34,524 INFO L226 Difference]: Without dead ends: 5674 [2018-10-27 06:24:34,536 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=438, Invalid=1818, Unknown=0, NotChecked=0, Total=2256 [2018-10-27 06:24:34,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2018-10-27 06:24:34,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 5647. [2018-10-27 06:24:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5647 states. [2018-10-27 06:24:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5647 states to 5647 states and 7694 transitions. [2018-10-27 06:24:34,692 INFO L78 Accepts]: Start accepts. Automaton has 5647 states and 7694 transitions. Word has length 206 [2018-10-27 06:24:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:34,693 INFO L481 AbstractCegarLoop]: Abstraction has 5647 states and 7694 transitions. [2018-10-27 06:24:34,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-27 06:24:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5647 states and 7694 transitions. [2018-10-27 06:24:34,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-10-27 06:24:34,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:34,707 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:24:34,708 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:34,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:34,708 INFO L82 PathProgramCache]: Analyzing trace with hash 913604782, now seen corresponding path program 1 times [2018-10-27 06:24:34,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:34,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:34,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:34,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:34,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:34,982 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:24:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 06:24:35,336 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:35,336 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:35,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 214 with the following transitions: [2018-10-27 06:24:35,337 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:35,348 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:35,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:36,136 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:24:36,137 INFO L272 AbstractInterpreter]: Visited 177 different actions 348 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:24:36,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:36,139 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:24:36,592 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 72.42% of their original sizes. [2018-10-27 06:24:36,592 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:24:36,971 INFO L415 sIntCurrentIteration]: We unified 212 AI predicates to 212 [2018-10-27 06:24:36,971 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:24:36,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:24:36,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-27 06:24:36,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:24:36,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 06:24:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 06:24:36,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2018-10-27 06:24:36,973 INFO L87 Difference]: Start difference. First operand 5647 states and 7694 transitions. Second operand 20 states. [2018-10-27 06:24:45,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:45,663 INFO L93 Difference]: Finished difference Result 7650 states and 10771 transitions. [2018-10-27 06:24:45,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 06:24:45,664 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 213 [2018-10-27 06:24:45,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:45,691 INFO L225 Difference]: With dead ends: 7650 [2018-10-27 06:24:45,691 INFO L226 Difference]: Without dead ends: 5861 [2018-10-27 06:24:45,699 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=632, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:24:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5861 states. [2018-10-27 06:24:45,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5861 to 5858. [2018-10-27 06:24:45,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5858 states. [2018-10-27 06:24:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 7923 transitions. [2018-10-27 06:24:45,834 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 7923 transitions. Word has length 213 [2018-10-27 06:24:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:45,834 INFO L481 AbstractCegarLoop]: Abstraction has 5858 states and 7923 transitions. [2018-10-27 06:24:45,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-27 06:24:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 7923 transitions. [2018-10-27 06:24:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-27 06:24:45,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:45,849 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:24:45,849 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:45,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:45,850 INFO L82 PathProgramCache]: Analyzing trace with hash 711691309, now seen corresponding path program 1 times [2018-10-27 06:24:45,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:45,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:45,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:45,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:45,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:46,116 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:24:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 63 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 06:24:46,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:46,425 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:46,425 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-27 06:24:46,426 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:46,430 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:46,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:47,306 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:47,307 INFO L272 AbstractInterpreter]: Visited 182 different actions 538 times. Merged at 8 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:24:47,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:47,317 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:47,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:47,317 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:24:47,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:47,326 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:47,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 06:24:48,008 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 48 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 06:24:49,805 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:24:49,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 06:24:49,805 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:24:49,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:24:49,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:24:49,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:24:49,807 INFO L87 Difference]: Start difference. First operand 5858 states and 7923 transitions. Second operand 9 states. [2018-10-27 06:24:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:55,334 INFO L93 Difference]: Finished difference Result 18388 states and 27912 transitions. [2018-10-27 06:24:55,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-27 06:24:55,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2018-10-27 06:24:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:55,407 INFO L225 Difference]: With dead ends: 18388 [2018-10-27 06:24:55,407 INFO L226 Difference]: Without dead ends: 12955 [2018-10-27 06:24:55,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 447 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2018-10-27 06:24:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12955 states. [2018-10-27 06:24:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12955 to 12667. [2018-10-27 06:24:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12667 states. [2018-10-27 06:24:55,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12667 states to 12667 states and 17135 transitions. [2018-10-27 06:24:55,848 INFO L78 Accepts]: Start accepts. Automaton has 12667 states and 17135 transitions. Word has length 219 [2018-10-27 06:24:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:24:55,849 INFO L481 AbstractCegarLoop]: Abstraction has 12667 states and 17135 transitions. [2018-10-27 06:24:55,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 06:24:55,849 INFO L276 IsEmpty]: Start isEmpty. Operand 12667 states and 17135 transitions. [2018-10-27 06:24:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-27 06:24:55,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:24:55,879 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:24:55,879 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:24:55,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:55,880 INFO L82 PathProgramCache]: Analyzing trace with hash 67883900, now seen corresponding path program 1 times [2018-10-27 06:24:55,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:24:55,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:55,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:55,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:24:55,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:24:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 06:24:56,352 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:56,352 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:24:56,352 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-27 06:24:56,353 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:24:56,360 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:24:56,360 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:24:57,714 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:24:57,715 INFO L272 AbstractInterpreter]: Visited 179 different actions 534 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:24:57,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:24:57,756 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:24:57,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:24:57,756 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-27 06:24:57,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:24:57,770 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:24:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:24:57,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:24:58,163 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-27 06:24:58,163 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:24:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-27 06:24:58,341 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:24:58,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-27 06:24:58,341 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:24:58,342 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 06:24:58,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:24:58,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:24:58,342 INFO L87 Difference]: Start difference. First operand 12667 states and 17135 transitions. Second operand 3 states. [2018-10-27 06:24:59,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:24:59,742 INFO L93 Difference]: Finished difference Result 24913 states and 33875 transitions. [2018-10-27 06:24:59,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:24:59,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-10-27 06:24:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:24:59,786 INFO L225 Difference]: With dead ends: 24913 [2018-10-27 06:24:59,786 INFO L226 Difference]: Without dead ends: 12671 [2018-10-27 06:24:59,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 490 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:24:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12671 states. [2018-10-27 06:25:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12671 to 12667. [2018-10-27 06:25:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12667 states. [2018-10-27 06:25:00,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12667 states to 12667 states and 16345 transitions. [2018-10-27 06:25:00,079 INFO L78 Accepts]: Start accepts. Automaton has 12667 states and 16345 transitions. Word has length 246 [2018-10-27 06:25:00,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:00,080 INFO L481 AbstractCegarLoop]: Abstraction has 12667 states and 16345 transitions. [2018-10-27 06:25:00,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 06:25:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 12667 states and 16345 transitions. [2018-10-27 06:25:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-27 06:25:00,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:00,110 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:25:00,110 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:00,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:00,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1385700341, now seen corresponding path program 1 times [2018-10-27 06:25:00,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:00,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:00,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:00,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:00,113 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:00,383 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 06:25:01,231 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 84 proven. 59 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 06:25:01,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:01,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:01,232 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-27 06:25:01,232 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:01,237 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:01,237 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:02,181 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:02,182 INFO L272 AbstractInterpreter]: Visited 180 different actions 538 times. Merged at 8 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:25:02,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:02,218 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:02,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:02,218 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-27 06:25:02,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:02,233 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:02,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:25:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-27 06:25:03,051 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:25:03,406 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 93 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-27 06:25:03,432 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:25:03,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:25:03,432 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:25:03,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:25:03,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:25:03,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:25:03,434 INFO L87 Difference]: Start difference. First operand 12667 states and 16345 transitions. Second operand 12 states. [2018-10-27 06:25:09,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:09,606 INFO L93 Difference]: Finished difference Result 39693 states and 52315 transitions. [2018-10-27 06:25:09,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 06:25:09,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 260 [2018-10-27 06:25:09,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:09,704 INFO L225 Difference]: With dead ends: 39693 [2018-10-27 06:25:09,704 INFO L226 Difference]: Without dead ends: 27451 [2018-10-27 06:25:09,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 542 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 06:25:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27451 states. [2018-10-27 06:25:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27451 to 27435. [2018-10-27 06:25:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27435 states. [2018-10-27 06:25:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27435 states to 27435 states and 34565 transitions. [2018-10-27 06:25:10,376 INFO L78 Accepts]: Start accepts. Automaton has 27435 states and 34565 transitions. Word has length 260 [2018-10-27 06:25:10,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:10,377 INFO L481 AbstractCegarLoop]: Abstraction has 27435 states and 34565 transitions. [2018-10-27 06:25:10,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:25:10,377 INFO L276 IsEmpty]: Start isEmpty. Operand 27435 states and 34565 transitions. [2018-10-27 06:25:10,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-10-27 06:25:10,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:10,451 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:25:10,451 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:10,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:10,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2128920829, now seen corresponding path program 1 times [2018-10-27 06:25:10,452 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:10,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:10,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:10,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:10,453 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:25:11,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:11,085 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:11,086 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 316 with the following transitions: [2018-10-27 06:25:11,086 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [460], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:11,091 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:11,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:11,855 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:25:11,855 INFO L272 AbstractInterpreter]: Visited 177 different actions 348 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 06:25:11,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:11,893 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:25:12,761 INFO L227 lantSequenceWeakener]: Weakened 312 states. On average, predicates are now at 72.19% of their original sizes. [2018-10-27 06:25:12,761 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:25:13,227 INFO L415 sIntCurrentIteration]: We unified 314 AI predicates to 314 [2018-10-27 06:25:13,227 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:25:13,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:25:13,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 06:25:13,227 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:25:13,228 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 06:25:13,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 06:25:13,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-10-27 06:25:13,229 INFO L87 Difference]: Start difference. First operand 27435 states and 34565 transitions. Second operand 18 states. [2018-10-27 06:25:40,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:40,530 INFO L93 Difference]: Finished difference Result 44880 states and 57948 transitions. [2018-10-27 06:25:40,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 06:25:40,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 315 [2018-10-27 06:25:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:40,632 INFO L225 Difference]: With dead ends: 44880 [2018-10-27 06:25:40,632 INFO L226 Difference]: Without dead ends: 28702 [2018-10-27 06:25:40,680 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 323 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2018-10-27 06:25:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28702 states. [2018-10-27 06:25:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28702 to 28689. [2018-10-27 06:25:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28689 states. [2018-10-27 06:25:41,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28689 states to 28689 states and 35978 transitions. [2018-10-27 06:25:41,203 INFO L78 Accepts]: Start accepts. Automaton has 28689 states and 35978 transitions. Word has length 315 [2018-10-27 06:25:41,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:41,203 INFO L481 AbstractCegarLoop]: Abstraction has 28689 states and 35978 transitions. [2018-10-27 06:25:41,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 06:25:41,204 INFO L276 IsEmpty]: Start isEmpty. Operand 28689 states and 35978 transitions. [2018-10-27 06:25:41,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-27 06:25:41,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:41,261 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:25:41,261 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:41,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:41,261 INFO L82 PathProgramCache]: Analyzing trace with hash 2059269957, now seen corresponding path program 1 times [2018-10-27 06:25:41,261 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:41,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:41,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:41,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:41,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:42,901 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 149 proven. 49 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 06:25:42,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:42,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:42,901 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 326 with the following transitions: [2018-10-27 06:25:42,902 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:42,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:42,911 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:44,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:44,220 INFO L272 AbstractInterpreter]: Visited 182 different actions 724 times. Merged at 9 different actions 35 times. Never widened. Found 9 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 06:25:44,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:44,227 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:44,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:44,227 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-27 06:25:44,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:44,236 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:44,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:25:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-27 06:25:45,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:25:45,512 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 158 proven. 33 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-10-27 06:25:45,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:25:45,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 06:25:45,534 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:25:45,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 06:25:45,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 06:25:45,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-10-27 06:25:45,535 INFO L87 Difference]: Start difference. First operand 28689 states and 35978 transitions. Second operand 12 states. [2018-10-27 06:25:55,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:25:55,013 INFO L93 Difference]: Finished difference Result 88415 states and 124105 transitions. [2018-10-27 06:25:55,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-27 06:25:55,014 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 325 [2018-10-27 06:25:55,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:25:55,264 INFO L225 Difference]: With dead ends: 88415 [2018-10-27 06:25:55,264 INFO L226 Difference]: Without dead ends: 68436 [2018-10-27 06:25:55,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 681 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=497, Invalid=1855, Unknown=0, NotChecked=0, Total=2352 [2018-10-27 06:25:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68436 states. [2018-10-27 06:25:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68436 to 68270. [2018-10-27 06:25:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68270 states. [2018-10-27 06:25:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68270 states to 68270 states and 92573 transitions. [2018-10-27 06:25:56,972 INFO L78 Accepts]: Start accepts. Automaton has 68270 states and 92573 transitions. Word has length 325 [2018-10-27 06:25:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:25:56,972 INFO L481 AbstractCegarLoop]: Abstraction has 68270 states and 92573 transitions. [2018-10-27 06:25:56,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 06:25:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 68270 states and 92573 transitions. [2018-10-27 06:25:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-27 06:25:57,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:25:57,057 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:25:57,058 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:25:57,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:57,058 INFO L82 PathProgramCache]: Analyzing trace with hash 317574997, now seen corresponding path program 1 times [2018-10-27 06:25:57,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:25:57,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:57,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:57,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:25:57,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:25:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 163 proven. 14 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-27 06:25:57,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:57,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:25:57,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-27 06:25:57,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [56], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:25:57,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:25:57,623 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:25:59,401 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:25:59,401 INFO L272 AbstractInterpreter]: Visited 182 different actions 721 times. Merged at 9 different actions 33 times. Never widened. Found 9 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 06:25:59,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:25:59,410 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:25:59,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:25:59,410 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-27 06:25:59,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:25:59,419 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:25:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:25:59,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:25:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-27 06:25:59,954 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:26:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-10-27 06:26:00,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:26:00,128 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-10-27 06:26:00,128 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:26:00,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 06:26:00,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 06:26:00,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-10-27 06:26:00,129 INFO L87 Difference]: Start difference. First operand 68270 states and 92573 transitions. Second operand 8 states. [2018-10-27 06:26:09,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:26:09,607 INFO L93 Difference]: Finished difference Result 199041 states and 296641 transitions. [2018-10-27 06:26:09,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-27 06:26:09,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2018-10-27 06:26:09,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:26:10,052 INFO L225 Difference]: With dead ends: 199041 [2018-10-27 06:26:10,052 INFO L226 Difference]: Without dead ends: 119498 [2018-10-27 06:26:10,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=327, Invalid=1565, Unknown=0, NotChecked=0, Total=1892 [2018-10-27 06:26:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119498 states. [2018-10-27 06:26:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119498 to 115478. [2018-10-27 06:26:12,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115478 states. [2018-10-27 06:26:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115478 states to 115478 states and 149703 transitions. [2018-10-27 06:26:13,047 INFO L78 Accepts]: Start accepts. Automaton has 115478 states and 149703 transitions. Word has length 333 [2018-10-27 06:26:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:26:13,047 INFO L481 AbstractCegarLoop]: Abstraction has 115478 states and 149703 transitions. [2018-10-27 06:26:13,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 06:26:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 115478 states and 149703 transitions. [2018-10-27 06:26:13,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-10-27 06:26:13,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:26:13,226 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:26:13,226 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:26:13,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:13,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1596906126, now seen corresponding path program 1 times [2018-10-27 06:26:13,226 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:26:13,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:13,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:13,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:26:13,227 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:26:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 297 proven. 44 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-27 06:26:13,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:13,870 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:26:13,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 429 with the following transitions: [2018-10-27 06:26:13,871 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [79], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [139], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [661], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [845], [847], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 06:26:13,875 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:26:13,876 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:26:15,502 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 06:26:15,503 INFO L272 AbstractInterpreter]: Visited 181 different actions 727 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 06:26:15,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:26:15,510 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 06:26:15,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:26:15,510 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-27 06:26:15,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:26:15,519 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 06:26:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:26:15,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:26:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 392 proven. 2 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-27 06:26:15,926 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 06:26:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 334 proven. 34 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-27 06:26:16,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 06:26:16,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 06:26:16,130 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 06:26:16,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 06:26:16,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 06:26:16,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:26:16,132 INFO L87 Difference]: Start difference. First operand 115478 states and 149703 transitions. Second operand 9 states. Received shutdown request... [2018-10-27 06:26:23,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-27 06:26:23,088 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 06:26:23,095 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 06:26:23,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 06:26:23 BoogieIcfgContainer [2018-10-27 06:26:23,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 06:26:23,096 INFO L168 Benchmark]: Toolchain (without parser) took 219014.89 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 06:26:23,097 INFO L168 Benchmark]: CDTParser took 1.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 06:26:23,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1216.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:23,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 308.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:23,100 INFO L168 Benchmark]: Boogie Preprocessor took 123.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:23,100 INFO L168 Benchmark]: RCFGBuilder took 5643.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 261.6 MB). Peak memory consumption was 261.6 MB. Max. memory is 7.1 GB. [2018-10-27 06:26:23,101 INFO L168 Benchmark]: TraceAbstraction took 211718.49 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -562.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 06:26:23,106 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1216.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 308.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.57 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5643.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 261.6 MB). Peak memory consumption was 261.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211718.49 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.5 GB in the end (delta: -562.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1533]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1533). Cancelled while BasicCegarLoop was constructing difference of abstraction (115478states) and FLOYD_HOARE automaton (currently 33 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (34284 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 211.6s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 171.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3389 SDtfs, 29598 SDslu, 5659 SDs, 0 SdLazy, 34657 SolverSat, 8044 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82.1s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 4919 GetRequests, 4594 SyntacticMatches, 15 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2994 ImplicationChecksByTransitivity, 11.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115478occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.3s AbstIntTime, 10 AbstIntIterations, 4 AbstIntStrong, 0.9990249856397138 AbsIntWeakeningRatio, 0.2750809061488673 AbsIntAvgWeakeningVarsNumRemoved, 56.982740021574976 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 4547 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 4912 NumberOfCodeBlocks, 4912 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6699 ConstructedInterpolants, 0 QuantifiedInterpolants, 3355785 SizeOfPredicates, 6 NumberOfNonLiveVariables, 8560 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 3895/4195 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown