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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:36:10,157 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:36:10,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:36:10,174 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:36:10,175 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:36:10,176 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:36:10,177 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:36:10,179 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:36:10,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:36:10,182 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:36:10,183 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:36:10,183 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:36:10,184 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:36:10,185 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:36:10,186 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:36:10,191 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:36:10,192 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:36:10,195 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:36:10,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:36:10,203 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:36:10,204 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:36:10,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:36:10,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:36:10,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:36:10,210 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:36:10,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:36:10,212 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:36:10,217 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:36:10,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:36:10,221 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:36:10,221 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:36:10,223 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 12:36:10,223 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:36:10,223 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:36:10,224 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:36:10,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:36:10,226 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 12:36:10,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:36:10,255 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:36:10,257 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:36:10,257 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:36:10,258 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:36:10,258 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:36:10,258 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:36:10,258 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:36:10,258 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:36:10,259 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:36:10,259 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:36:10,259 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:36:10,260 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:36:10,260 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:36:10,261 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:36:10,261 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:36:10,261 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:36:10,261 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:36:10,261 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:36:10,262 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:36:10,263 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:36:10,264 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:36:10,264 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:36:10,264 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:36:10,264 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:36:10,264 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:36:10,265 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:36:10,265 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:36:10,265 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:36:10,265 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:36:10,265 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:36:10,265 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:36:10,266 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:36:10,266 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:36:10,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:36:10,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:36:10,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:36:10,350 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:36:10,350 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:36:10,351 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c [2018-10-27 12:36:10,419 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a36f7b809/69f7d9caeacd4949b7f9c9a5e3a05928/FLAG270e2f2b4 [2018-10-27 12:36:11,171 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:36:11,172 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label57_true-unreach-call.c [2018-10-27 12:36:11,190 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a36f7b809/69f7d9caeacd4949b7f9c9a5e3a05928/FLAG270e2f2b4 [2018-10-27 12:36:11,207 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a36f7b809/69f7d9caeacd4949b7f9c9a5e3a05928 [2018-10-27 12:36:11,221 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:36:11,223 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:36:11,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:36:11,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:36:11,230 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:36:11,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:36:11" (1/1) ... [2018-10-27 12:36:11,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed858fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:11, skipping insertion in model container [2018-10-27 12:36:11,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:36:11" (1/1) ... [2018-10-27 12:36:11,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:36:11,339 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:36:12,007 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:36:12,013 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:36:12,262 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:36:12,284 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:36:12,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12 WrapperNode [2018-10-27 12:36:12,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:36:12,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:36:12,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:36:12,286 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:36:12,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:36:12,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:36:12,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:36:12,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:36:12,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (1/1) ... [2018-10-27 12:36:12,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:36:12,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:36:12,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:36:12,756 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:36:12,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (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 12:36:12,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:36:12,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:36:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:36:12,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:36:12,830 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:36:12,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:36:17,931 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:36:17,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:36:17 BoogieIcfgContainer [2018-10-27 12:36:17,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:36:17,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:36:17,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:36:17,937 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:36:17,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:36:11" (1/3) ... [2018-10-27 12:36:17,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4fbea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:36:17, skipping insertion in model container [2018-10-27 12:36:17,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:12" (2/3) ... [2018-10-27 12:36:17,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4fbea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:36:17, skipping insertion in model container [2018-10-27 12:36:17,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:36:17" (3/3) ... [2018-10-27 12:36:17,945 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label57_true-unreach-call.c [2018-10-27 12:36:17,956 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:36:17,967 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:36:17,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:36:18,037 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:36:18,038 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:36:18,038 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:36:18,038 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:36:18,038 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:36:18,038 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:36:18,039 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:36:18,039 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:36:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:36:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-27 12:36:18,089 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:18,090 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] [2018-10-27 12:36:18,093 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:18,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:18,100 INFO L82 PathProgramCache]: Analyzing trace with hash 790095017, now seen corresponding path program 1 times [2018-10-27 12:36:18,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:18,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:18,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:18,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:18,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:18,998 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:36:19,196 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 12:36:19,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:19,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:36:19,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:19,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:36:19,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:36:19,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:36:19,226 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 12:36:21,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:21,447 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-10-27 12:36:21,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:36:21,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-10-27 12:36:21,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:21,473 INFO L225 Difference]: With dead ends: 844 [2018-10-27 12:36:21,473 INFO L226 Difference]: Without dead ends: 530 [2018-10-27 12:36:21,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:36:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-10-27 12:36:21,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-10-27 12:36:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-27 12:36:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-10-27 12:36:21,626 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 168 [2018-10-27 12:36:21,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:21,627 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-10-27 12:36:21,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:36:21,628 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-10-27 12:36:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-27 12:36:21,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:21,643 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] [2018-10-27 12:36:21,643 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:21,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:21,644 INFO L82 PathProgramCache]: Analyzing trace with hash -553690579, now seen corresponding path program 1 times [2018-10-27 12:36:21,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:21,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:21,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:21,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:21,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:22,166 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 12:36:22,166 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:22,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:36:22,167 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:22,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:36:22,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:36:22,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:36:22,173 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-10-27 12:36:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:24,237 INFO L93 Difference]: Finished difference Result 1473 states and 2496 transitions. [2018-10-27 12:36:24,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:36:24,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2018-10-27 12:36:24,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:24,246 INFO L225 Difference]: With dead ends: 1473 [2018-10-27 12:36:24,246 INFO L226 Difference]: Without dead ends: 954 [2018-10-27 12:36:24,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 12:36:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2018-10-27 12:36:24,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 952. [2018-10-27 12:36:24,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-27 12:36:24,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1496 transitions. [2018-10-27 12:36:24,289 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1496 transitions. Word has length 181 [2018-10-27 12:36:24,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:24,290 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1496 transitions. [2018-10-27 12:36:24,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:36:24,290 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1496 transitions. [2018-10-27 12:36:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-27 12:36:24,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:24,295 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:36:24,295 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:24,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:24,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1994788873, now seen corresponding path program 1 times [2018-10-27 12:36:24,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:24,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:24,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:24,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:24,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:36:24,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:24,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:36:24,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:24,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:36:24,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:36:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:36:24,582 INFO L87 Difference]: Start difference. First operand 952 states and 1496 transitions. Second operand 3 states. [2018-10-27 12:36:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:27,167 INFO L93 Difference]: Finished difference Result 2749 states and 4435 transitions. [2018-10-27 12:36:27,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:36:27,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-27 12:36:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:27,186 INFO L225 Difference]: With dead ends: 2749 [2018-10-27 12:36:27,187 INFO L226 Difference]: Without dead ends: 1803 [2018-10-27 12:36:27,195 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 12:36:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-10-27 12:36:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1786. [2018-10-27 12:36:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1786 states. [2018-10-27 12:36:27,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 2786 transitions. [2018-10-27 12:36:27,267 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 2786 transitions. Word has length 183 [2018-10-27 12:36:27,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:27,268 INFO L481 AbstractCegarLoop]: Abstraction has 1786 states and 2786 transitions. [2018-10-27 12:36:27,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:36:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 2786 transitions. [2018-10-27 12:36:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 12:36:27,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:27,275 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 12:36:27,275 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:27,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:27,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2119210880, now seen corresponding path program 1 times [2018-10-27 12:36:27,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:27,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:27,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:27,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:27,278 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:36:27,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:27,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:36:27,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:27,534 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:36:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:36:27,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:36:27,535 INFO L87 Difference]: Start difference. First operand 1786 states and 2786 transitions. Second operand 6 states. [2018-10-27 12:36:30,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:30,046 INFO L93 Difference]: Finished difference Result 5451 states and 9148 transitions. [2018-10-27 12:36:30,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:36:30,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-10-27 12:36:30,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:30,088 INFO L225 Difference]: With dead ends: 5451 [2018-10-27 12:36:30,089 INFO L226 Difference]: Without dead ends: 3671 [2018-10-27 12:36:30,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:36:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2018-10-27 12:36:30,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3579. [2018-10-27 12:36:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3579 states. [2018-10-27 12:36:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 5696 transitions. [2018-10-27 12:36:30,336 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 5696 transitions. Word has length 186 [2018-10-27 12:36:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:30,337 INFO L481 AbstractCegarLoop]: Abstraction has 3579 states and 5696 transitions. [2018-10-27 12:36:30,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:36:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 5696 transitions. [2018-10-27 12:36:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 12:36:30,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:30,350 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 12:36:30,350 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:30,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:30,351 INFO L82 PathProgramCache]: Analyzing trace with hash 2107273996, now seen corresponding path program 1 times [2018-10-27 12:36:30,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:30,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:30,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:30,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:30,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:36:30,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:30,677 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:36:30,678 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-27 12:36:30,681 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [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], [805], [807], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:36:30,741 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:36:30,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:36:33,348 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:36:33,350 INFO L272 AbstractInterpreter]: Visited 172 different actions 338 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 12:36:33,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:33,391 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:36:35,310 INFO L227 lantSequenceWeakener]: Weakened 40 states. On average, predicates are now at 79.91% of their original sizes. [2018-10-27 12:36:35,311 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:36:40,137 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-10-27 12:36:40,137 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:36:40,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:36:40,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-10-27 12:36:40,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:40,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 12:36:40,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 12:36:40,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-10-27 12:36:40,140 INFO L87 Difference]: Start difference. First operand 3579 states and 5696 transitions. Second operand 21 states. [2018-10-27 12:37:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:37:34,013 INFO L93 Difference]: Finished difference Result 8201 states and 13071 transitions. [2018-10-27 12:37:34,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 12:37:34,014 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 195 [2018-10-27 12:37:34,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:37:34,035 INFO L225 Difference]: With dead ends: 8201 [2018-10-27 12:37:34,035 INFO L226 Difference]: Without dead ends: 4628 [2018-10-27 12:37:34,049 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 142 SyntacticMatches, 33 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2018-10-27 12:37:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2018-10-27 12:37:34,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4623. [2018-10-27 12:37:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4623 states. [2018-10-27 12:37:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 6817 transitions. [2018-10-27 12:37:34,173 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 6817 transitions. Word has length 195 [2018-10-27 12:37:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:37:34,174 INFO L481 AbstractCegarLoop]: Abstraction has 4623 states and 6817 transitions. [2018-10-27 12:37:34,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-27 12:37:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 6817 transitions. [2018-10-27 12:37:34,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-27 12:37:34,187 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:37:34,187 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:34,188 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:37:34,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:37:34,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1111613903, now seen corresponding path program 1 times [2018-10-27 12:37:34,189 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:37:34,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:37:34,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:37:34,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:37:34,190 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:37:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:37:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:37:34,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:37:34,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:37:34,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 209 with the following transitions: [2018-10-27 12:37:34,348 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [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], [805], [807], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:37:34,358 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:37:34,358 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:37:35,939 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:37:35,939 INFO L272 AbstractInterpreter]: Visited 172 different actions 340 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:37:35,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:37:35,941 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:37:36,786 INFO L227 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 71.38% of their original sizes. [2018-10-27 12:37:36,787 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:37:37,076 INFO L415 sIntCurrentIteration]: We unified 207 AI predicates to 207 [2018-10-27 12:37:37,077 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:37:37,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:37:37,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 12:37:37,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:37:37,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 12:37:37,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 12:37:37,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-10-27 12:37:37,079 INFO L87 Difference]: Start difference. First operand 4623 states and 6817 transitions. Second operand 18 states. [2018-10-27 12:38:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:38:26,084 INFO L93 Difference]: Finished difference Result 10134 states and 15625 transitions. [2018-10-27 12:38:26,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:38:26,084 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 208 [2018-10-27 12:38:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:38:26,112 INFO L225 Difference]: With dead ends: 10134 [2018-10-27 12:38:26,112 INFO L226 Difference]: Without dead ends: 6561 [2018-10-27 12:38:26,124 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=546, Unknown=0, NotChecked=0, Total=702 [2018-10-27 12:38:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6561 states. [2018-10-27 12:38:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6561 to 6558. [2018-10-27 12:38:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6558 states. [2018-10-27 12:38:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6558 states to 6558 states and 9107 transitions. [2018-10-27 12:38:26,288 INFO L78 Accepts]: Start accepts. Automaton has 6558 states and 9107 transitions. Word has length 208 [2018-10-27 12:38:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:38:26,288 INFO L481 AbstractCegarLoop]: Abstraction has 6558 states and 9107 transitions. [2018-10-27 12:38:26,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-27 12:38:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6558 states and 9107 transitions. [2018-10-27 12:38:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-27 12:38:26,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:38:26,304 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1] [2018-10-27 12:38:26,305 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:38:26,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1814692057, now seen corresponding path program 1 times [2018-10-27 12:38:26,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:38:26,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:26,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:26,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:26,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:38:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 81 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-10-27 12:38:27,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:27,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:38:27,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-27 12:38:27,348 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [28], [29], [33], [37], [41], [44], [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], [805], [807], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:38:27,355 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:38:27,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:38:29,375 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:38:29,375 INFO L272 AbstractInterpreter]: Visited 174 different actions 516 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:38:29,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:29,385 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:38:29,385 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:29,385 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 12:38:29,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:29,395 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:38:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:29,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:38:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 12:38:30,055 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:38:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-27 12:38:30,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:38:30,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-10-27 12:38:30,593 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:38:30,594 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 12:38:30,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 12:38:30,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:38:30,594 INFO L87 Difference]: Start difference. First operand 6558 states and 9107 transitions. Second operand 14 states. [2018-10-27 12:38:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:38:37,796 INFO L93 Difference]: Finished difference Result 22478 states and 37387 transitions. [2018-10-27 12:38:37,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-27 12:38:37,799 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 222 [2018-10-27 12:38:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:38:37,913 INFO L225 Difference]: With dead ends: 22478 [2018-10-27 12:38:37,913 INFO L226 Difference]: Without dead ends: 17389 [2018-10-27 12:38:37,947 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=356, Invalid=1126, Unknown=0, NotChecked=0, Total=1482 [2018-10-27 12:38:37,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17389 states. [2018-10-27 12:38:38,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17389 to 16847. [2018-10-27 12:38:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16847 states. [2018-10-27 12:38:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16847 states to 16847 states and 24258 transitions. [2018-10-27 12:38:38,598 INFO L78 Accepts]: Start accepts. Automaton has 16847 states and 24258 transitions. Word has length 222 [2018-10-27 12:38:38,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:38:38,599 INFO L481 AbstractCegarLoop]: Abstraction has 16847 states and 24258 transitions. [2018-10-27 12:38:38,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-27 12:38:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 16847 states and 24258 transitions. [2018-10-27 12:38:38,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-27 12:38:38,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:38:38,626 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:38:38,626 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:38:38,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:38,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1110682037, now seen corresponding path program 1 times [2018-10-27 12:38:38,627 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:38:38,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:38,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:38,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:38,628 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:38:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 60 proven. 33 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 12:38:39,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:39,698 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:38:39,698 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-10-27 12:38:39,699 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [52], [53], [57], [61], [65], [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], [805], [807], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:38:39,706 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:38:39,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:38:43,050 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:38:43,051 INFO L272 AbstractInterpreter]: Visited 174 different actions 519 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 12:38:43,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:43,056 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:38:43,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:43,056 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 12:38:43,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:43,066 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:38:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:43,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:38:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-27 12:38:43,408 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:38:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-27 12:38:43,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:38:43,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 12:38:43,665 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:38:43,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 12:38:43,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 12:38:43,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-10-27 12:38:43,667 INFO L87 Difference]: Start difference. First operand 16847 states and 24258 transitions. Second operand 12 states. [2018-10-27 12:38:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:38:55,500 INFO L93 Difference]: Finished difference Result 160316 states and 257087 transitions. [2018-10-27 12:38:55,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-27 12:38:55,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 235 [2018-10-27 12:38:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:38:56,230 INFO L225 Difference]: With dead ends: 160316 [2018-10-27 12:38:56,230 INFO L226 Difference]: Without dead ends: 144937 [2018-10-27 12:38:56,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 484 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=859, Invalid=3971, Unknown=0, NotChecked=0, Total=4830 [2018-10-27 12:38:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144937 states. [2018-10-27 12:39:00,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144937 to 144077. [2018-10-27 12:39:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144077 states. [2018-10-27 12:39:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144077 states to 144077 states and 221882 transitions. [2018-10-27 12:39:00,619 INFO L78 Accepts]: Start accepts. Automaton has 144077 states and 221882 transitions. Word has length 235 [2018-10-27 12:39:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:39:00,619 INFO L481 AbstractCegarLoop]: Abstraction has 144077 states and 221882 transitions. [2018-10-27 12:39:00,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 12:39:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 144077 states and 221882 transitions. [2018-10-27 12:39:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-27 12:39:00,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:39:00,730 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:39:00,733 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:39:00,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:00,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1093098390, now seen corresponding path program 1 times [2018-10-27 12:39:00,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:39:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:00,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:00,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:39:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 113 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:39:01,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:01,713 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:39:01,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-27 12:39:01,713 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [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], [805], [807], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:39:01,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:39:01,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:39:04,494 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:39:04,494 INFO L272 AbstractInterpreter]: Visited 174 different actions 519 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 12:39:04,502 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:04,502 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:39:04,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:04,502 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 12:39:04,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:04,511 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:39:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:04,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:39:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 12:39:05,054 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:39:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 12:39:05,294 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:39:05,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 12:39:05,295 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:39:05,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 12:39:05,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 12:39:05,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-10-27 12:39:05,297 INFO L87 Difference]: Start difference. First operand 144077 states and 221882 transitions. Second operand 12 states. [2018-10-27 12:39:07,108 WARN L179 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-27 12:39:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:39:46,493 INFO L93 Difference]: Finished difference Result 1011794 states and 1992438 transitions. [2018-10-27 12:39:46,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-27 12:39:46,494 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 243 [2018-10-27 12:39:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-10-27 12:39:51,221 INFO L225 Difference]: With dead ends: 1011794 [2018-10-27 12:39:51,221 INFO L226 Difference]: Without dead ends: 869396 [2018-10-27 12:39:53,588 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 521 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1359 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=737, Invalid=3553, Unknown=0, NotChecked=0, Total=4290 [2018-10-27 12:39:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869396 states. [2018-10-27 12:39:54,110 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:39:54,114 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:39:54,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:39:54 BoogieIcfgContainer [2018-10-27 12:39:54,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:39:54,115 INFO L168 Benchmark]: Toolchain (without parser) took 222893.51 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-10-27 12:39:54,116 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 12:39:54,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1061.45 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:39:54,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 341.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:39:54,118 INFO L168 Benchmark]: Boogie Preprocessor took 127.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:39:54,119 INFO L168 Benchmark]: RCFGBuilder took 5176.17 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: 263.9 MB). Peak memory consumption was 263.9 MB. Max. memory is 7.1 GB. [2018-10-27 12:39:54,120 INFO L168 Benchmark]: TraceAbstraction took 216181.46 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -688.9 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-10-27 12:39:54,125 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1061.45 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 341.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -883.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5176.17 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: 263.9 MB). Peak memory consumption was 263.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216181.46 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -688.9 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1518]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1518). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 216.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2259 SDtfs, 27906 SDslu, 4754 SDs, 0 SdLazy, 28109 SolverSat, 7816 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2085 GetRequests, 1809 SyntacticMatches, 42 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3640 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=144077occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.4s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9988683450310296 AbsIntWeakeningRatio, 0.30673316708229426 AbsIntAvgWeakeningVarsNumRemoved, 45.78802992518703 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 1526 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 2521 NumberOfCodeBlocks, 2521 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3206 ConstructedInterpolants, 0 QuantifiedInterpolants, 1224692 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3919 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 1091/1184 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown