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_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:26:20,194 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:26:20,198 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:26:20,214 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:26:20,214 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:26:20,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:26:20,217 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:26:20,219 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:26:20,220 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:26:20,221 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:26:20,222 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:26:20,222 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:26:20,223 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:26:20,224 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:26:20,225 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:26:20,227 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:26:20,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:26:20,233 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:26:20,236 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:26:20,243 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:26:20,248 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:26:20,250 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:26:20,254 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:26:20,255 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:26:20,255 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:26:20,256 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:26:20,261 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:26:20,262 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:26:20,263 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:26:20,267 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:26:20,267 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:26:20,268 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 12:26:20,268 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:26:20,268 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:26:20,271 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:26:20,272 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:26:20,272 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 12:26:20,300 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:26:20,301 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:26:20,301 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:26:20,302 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:26:20,302 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:26:20,302 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:26:20,302 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:26:20,302 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:26:20,303 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:26:20,303 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:26:20,303 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:26:20,303 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:26:20,304 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:26:20,304 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:26:20,304 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:26:20,304 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:26:20,304 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:26:20,305 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:26:20,305 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:26:20,305 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:26:20,305 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:26:20,305 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:26:20,306 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:26:20,306 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:26:20,306 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:26:20,306 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:26:20,306 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:26:20,307 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:26:20,307 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:26:20,307 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:26:20,307 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:26:20,307 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:26:20,308 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:26:20,308 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:26:20,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:26:20,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:26:20,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:26:20,375 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:26:20,375 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:26:20,376 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label15_true-unreach-call.c [2018-10-27 12:26:20,446 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/148c12376/6f55bf24163143ffb2875be767207ef8/FLAGd40fecb16 [2018-10-27 12:26:21,121 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:26:21,122 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label15_true-unreach-call.c [2018-10-27 12:26:21,140 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/148c12376/6f55bf24163143ffb2875be767207ef8/FLAGd40fecb16 [2018-10-27 12:26:21,157 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/148c12376/6f55bf24163143ffb2875be767207ef8 [2018-10-27 12:26:21,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:26:21,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:26:21,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:26:21,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:26:21,176 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:26:21,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:26:21" (1/1) ... [2018-10-27 12:26:21,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b5a5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:21, skipping insertion in model container [2018-10-27 12:26:21,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:26:21" (1/1) ... [2018-10-27 12:26:21,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:26:21,284 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:26:22,006 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:26:22,012 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:26:22,270 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:26:22,293 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:26:22,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22 WrapperNode [2018-10-27 12:26:22,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:26:22,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:26:22,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:26:22,295 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:26:22,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:26:22,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:26:22,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:26:22,591 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:26:22,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (1/1) ... [2018-10-27 12:26:22,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:26:22,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:26:22,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:26:22,694 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:26:22,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (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 12:26:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:26:22,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:26:22,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:26:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:26:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:26:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:26:22,764 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:26:22,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:26:27,160 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:26:27,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:26:27 BoogieIcfgContainer [2018-10-27 12:26:27,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:26:27,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:26:27,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:26:27,166 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:26:27,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:26:21" (1/3) ... [2018-10-27 12:26:27,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59bd424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:26:27, skipping insertion in model container [2018-10-27 12:26:27,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:22" (2/3) ... [2018-10-27 12:26:27,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59bd424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:26:27, skipping insertion in model container [2018-10-27 12:26:27,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:26:27" (3/3) ... [2018-10-27 12:26:27,171 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label15_true-unreach-call.c [2018-10-27 12:26:27,181 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:26:27,192 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:26:27,210 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:26:27,262 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:26:27,262 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:26:27,262 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:26:27,262 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:26:27,262 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:26:27,263 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:26:27,263 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:26:27,263 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:26:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:26:27,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-27 12:26:27,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:27,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:27,344 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:27,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:27,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1930807004, now seen corresponding path program 1 times [2018-10-27 12:26:27,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:27,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:27,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:27,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:27,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:28,277 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:26:28,459 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 12:26:28,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:26:28,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:26:28,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:28,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:26:28,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:26:28,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:26:28,480 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 12:26:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:30,400 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-27 12:26:30,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:26:30,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2018-10-27 12:26:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:30,426 INFO L225 Difference]: With dead ends: 838 [2018-10-27 12:26:30,426 INFO L226 Difference]: Without dead ends: 524 [2018-10-27 12:26:30,436 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 12:26:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-27 12:26:30,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-27 12:26:30,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-27 12:26:30,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-27 12:26:30,531 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 207 [2018-10-27 12:26:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:30,532 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-27 12:26:30,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:26:30,533 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-27 12:26:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-27 12:26:30,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:30,542 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:26:30,543 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:30,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:30,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1700452501, now seen corresponding path program 1 times [2018-10-27 12:26:30,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:30,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:30,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:30,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:30,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:30,854 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:26:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:26:31,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:26:31,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:26:31,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:31,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:26:31,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:26:31,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:26:31,212 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-27 12:26:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:34,994 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-27 12:26:34,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:26:34,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-27 12:26:34,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:35,010 INFO L225 Difference]: With dead ends: 1581 [2018-10-27 12:26:35,010 INFO L226 Difference]: Without dead ends: 1065 [2018-10-27 12:26:35,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:26:35,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-27 12:26:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-27 12:26:35,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-27 12:26:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-27 12:26:35,070 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 217 [2018-10-27 12:26:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:35,071 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-27 12:26:35,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:26:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-27 12:26:35,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-27 12:26:35,077 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:35,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:35,077 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:35,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:35,078 INFO L82 PathProgramCache]: Analyzing trace with hash -673913640, now seen corresponding path program 1 times [2018-10-27 12:26:35,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:35,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:35,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:35,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:35,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:35,421 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 12:26:35,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:26:35,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:26:35,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:35,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:26:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:26:35,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:26:35,428 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-27 12:26:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:38,331 INFO L93 Difference]: Finished difference Result 2887 states and 5065 transitions. [2018-10-27 12:26:38,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:26:38,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-10-27 12:26:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:38,346 INFO L225 Difference]: With dead ends: 2887 [2018-10-27 12:26:38,346 INFO L226 Difference]: Without dead ends: 1870 [2018-10-27 12:26:38,353 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 12:26:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-10-27 12:26:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1869. [2018-10-27 12:26:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1869 states. [2018-10-27 12:26:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2999 transitions. [2018-10-27 12:26:38,410 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2999 transitions. Word has length 220 [2018-10-27 12:26:38,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:38,411 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 2999 transitions. [2018-10-27 12:26:38,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:26:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2999 transitions. [2018-10-27 12:26:38,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-27 12:26:38,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:38,422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:38,422 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:38,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:38,422 INFO L82 PathProgramCache]: Analyzing trace with hash -768110724, now seen corresponding path program 1 times [2018-10-27 12:26:38,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:38,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:38,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:38,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:38,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:38,866 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 12:26:38,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:26:38,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 12:26:38,867 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:38,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 12:26:38,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 12:26:38,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:26:38,868 INFO L87 Difference]: Start difference. First operand 1869 states and 2999 transitions. Second operand 4 states. [2018-10-27 12:26:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:41,208 INFO L93 Difference]: Finished difference Result 7160 states and 12067 transitions. [2018-10-27 12:26:41,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 12:26:41,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 222 [2018-10-27 12:26:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:41,255 INFO L225 Difference]: With dead ends: 7160 [2018-10-27 12:26:41,255 INFO L226 Difference]: Without dead ends: 5297 [2018-10-27 12:26:41,267 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:26:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5297 states. [2018-10-27 12:26:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5297 to 5291. [2018-10-27 12:26:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5291 states. [2018-10-27 12:26:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5291 states to 5291 states and 8112 transitions. [2018-10-27 12:26:41,447 INFO L78 Accepts]: Start accepts. Automaton has 5291 states and 8112 transitions. Word has length 222 [2018-10-27 12:26:41,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:41,447 INFO L481 AbstractCegarLoop]: Abstraction has 5291 states and 8112 transitions. [2018-10-27 12:26:41,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 12:26:41,448 INFO L276 IsEmpty]: Start isEmpty. Operand 5291 states and 8112 transitions. [2018-10-27 12:26:41,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-27 12:26:41,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:41,470 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:41,471 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:41,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:41,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1656628327, now seen corresponding path program 1 times [2018-10-27 12:26:41,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:41,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:41,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:41,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:41,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:26:41,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:26:41,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:26:41,875 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-27 12:26:41,878 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], [115], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:26:41,936 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:26:41,936 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:26:43,218 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:26:43,219 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:26:43,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:43,266 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:26:44,587 INFO L227 lantSequenceWeakener]: Weakened 234 states. On average, predicates are now at 74.64% of their original sizes. [2018-10-27 12:26:44,588 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:26:45,749 INFO L415 sIntCurrentIteration]: We unified 239 AI predicates to 239 [2018-10-27 12:26:45,750 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:26:45,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:26:45,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-27 12:26:45,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:45,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 12:26:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 12:26:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:26:45,752 INFO L87 Difference]: Start difference. First operand 5291 states and 8112 transitions. Second operand 16 states. [2018-10-27 12:27:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:27:07,654 INFO L93 Difference]: Finished difference Result 10786 states and 16537 transitions. [2018-10-27 12:27:07,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:27:07,654 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2018-10-27 12:27:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:27:07,679 INFO L225 Difference]: With dead ends: 10786 [2018-10-27 12:27:07,679 INFO L226 Difference]: Without dead ends: 5501 [2018-10-27 12:27:07,696 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 242 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2018-10-27 12:27:07,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5501 states. [2018-10-27 12:27:07,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5501 to 5499. [2018-10-27 12:27:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5499 states. [2018-10-27 12:27:07,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5499 states to 5499 states and 8329 transitions. [2018-10-27 12:27:07,831 INFO L78 Accepts]: Start accepts. Automaton has 5499 states and 8329 transitions. Word has length 240 [2018-10-27 12:27:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:27:07,832 INFO L481 AbstractCegarLoop]: Abstraction has 5499 states and 8329 transitions. [2018-10-27 12:27:07,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 12:27:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5499 states and 8329 transitions. [2018-10-27 12:27:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-27 12:27:07,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:27:07,851 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:27:07,851 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:27:07,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:27:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash -14594966, now seen corresponding path program 1 times [2018-10-27 12:27:07,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:27:07,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:27:07,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:27:07,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:27:07,853 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:27:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:27:08,262 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:27:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:27:08,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:27:08,399 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:27:08,400 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-10-27 12:27:08,400 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], [96], [100], [104], [108], [112], [115], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:27:08,411 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:27:08,411 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:27:09,982 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:27:09,983 INFO L272 AbstractInterpreter]: Visited 211 different actions 418 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 12:27:09,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:27:09,996 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:27:11,220 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 82.4% of their original sizes. [2018-10-27 12:27:11,221 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:27:12,747 INFO L415 sIntCurrentIteration]: We unified 251 AI predicates to 251 [2018-10-27 12:27:12,747 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:27:12,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:27:12,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [7] total 28 [2018-10-27 12:27:12,748 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:27:12,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 12:27:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 12:27:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-10-27 12:27:12,750 INFO L87 Difference]: Start difference. First operand 5499 states and 8329 transitions. Second operand 23 states. [2018-10-27 12:28:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:09,435 INFO L93 Difference]: Finished difference Result 11417 states and 17303 transitions. [2018-10-27 12:28:09,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-27 12:28:09,435 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 252 [2018-10-27 12:28:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:09,459 INFO L225 Difference]: With dead ends: 11417 [2018-10-27 12:28:09,460 INFO L226 Difference]: Without dead ends: 6132 [2018-10-27 12:28:09,473 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2018-10-27 12:28:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2018-10-27 12:28:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 6129. [2018-10-27 12:28:09,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6129 states. [2018-10-27 12:28:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6129 states to 6129 states and 9011 transitions. [2018-10-27 12:28:09,625 INFO L78 Accepts]: Start accepts. Automaton has 6129 states and 9011 transitions. Word has length 252 [2018-10-27 12:28:09,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:09,626 INFO L481 AbstractCegarLoop]: Abstraction has 6129 states and 9011 transitions. [2018-10-27 12:28:09,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 12:28:09,626 INFO L276 IsEmpty]: Start isEmpty. Operand 6129 states and 9011 transitions. [2018-10-27 12:28:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-27 12:28:09,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:09,645 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:09,645 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:09,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:09,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1088752774, now seen corresponding path program 1 times [2018-10-27 12:28:09,646 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:09,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:09,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:09,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:09,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:10,264 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:28:10,264 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:10,264 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:10,265 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 265 with the following transitions: [2018-10-27 12:28:10,265 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [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], [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], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:10,273 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:10,274 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:11,289 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:11,289 INFO L272 AbstractInterpreter]: Visited 212 different actions 416 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:28:11,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:11,301 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:11,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:11,301 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 12:28:11,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:11,312 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:11,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:28:11,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:12,189 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:28:12,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:12,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-27 12:28:12,212 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:12,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:28:12,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:28:12,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 12:28:12,213 INFO L87 Difference]: Start difference. First operand 6129 states and 9011 transitions. Second operand 6 states. [2018-10-27 12:28:15,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:15,708 INFO L93 Difference]: Finished difference Result 11745 states and 18058 transitions. [2018-10-27 12:28:15,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 12:28:15,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 264 [2018-10-27 12:28:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:15,745 INFO L225 Difference]: With dead ends: 11745 [2018-10-27 12:28:15,745 INFO L226 Difference]: Without dead ends: 6460 [2018-10-27 12:28:15,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 529 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:28:15,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2018-10-27 12:28:15,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 6377. [2018-10-27 12:28:15,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6377 states. [2018-10-27 12:28:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6377 states to 6377 states and 8901 transitions. [2018-10-27 12:28:15,955 INFO L78 Accepts]: Start accepts. Automaton has 6377 states and 8901 transitions. Word has length 264 [2018-10-27 12:28:15,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:15,955 INFO L481 AbstractCegarLoop]: Abstraction has 6377 states and 8901 transitions. [2018-10-27 12:28:15,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:28:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6377 states and 8901 transitions. [2018-10-27 12:28:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-27 12:28:15,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:15,977 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:15,978 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:15,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:15,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1759998943, now seen corresponding path program 1 times [2018-10-27 12:28:15,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:15,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:15,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:15,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:15,979 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:16,324 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 12:28:16,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:16,325 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:16,325 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 270 with the following transitions: [2018-10-27 12:28:16,326 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], [99], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:16,334 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:16,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:18,614 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:18,614 INFO L272 AbstractInterpreter]: Visited 213 different actions 418 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:28:18,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:18,642 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:18,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:18,642 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 12:28:18,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:18,654 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:18,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-27 12:28:19,060 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:19,339 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 12:28:19,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:19,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-27 12:28:19,361 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:19,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:28:19,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:28:19,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:28:19,363 INFO L87 Difference]: Start difference. First operand 6377 states and 8901 transitions. Second operand 8 states. [2018-10-27 12:28:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:22,925 INFO L93 Difference]: Finished difference Result 14743 states and 22907 transitions. [2018-10-27 12:28:22,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 12:28:22,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2018-10-27 12:28:22,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:22,976 INFO L225 Difference]: With dead ends: 14743 [2018-10-27 12:28:22,976 INFO L226 Difference]: Without dead ends: 9420 [2018-10-27 12:28:23,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:28:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9420 states. [2018-10-27 12:28:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9420 to 9312. [2018-10-27 12:28:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9312 states. [2018-10-27 12:28:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9312 states to 9312 states and 13064 transitions. [2018-10-27 12:28:23,267 INFO L78 Accepts]: Start accepts. Automaton has 9312 states and 13064 transitions. Word has length 269 [2018-10-27 12:28:23,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:23,268 INFO L481 AbstractCegarLoop]: Abstraction has 9312 states and 13064 transitions. [2018-10-27 12:28:23,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:28:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9312 states and 13064 transitions. [2018-10-27 12:28:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-27 12:28:23,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:23,299 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:23,299 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:23,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:23,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1398098216, now seen corresponding path program 1 times [2018-10-27 12:28:23,300 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:23,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:23,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:23,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:23,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:23,845 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 12:28:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 79 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 12:28:24,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:24,044 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:24,044 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 278 with the following transitions: [2018-10-27 12:28:24,045 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:24,050 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:24,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:25,124 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:25,124 INFO L272 AbstractInterpreter]: Visited 213 different actions 418 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:28:25,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:25,133 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:25,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:25,133 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 12:28:25,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:25,144 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:25,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-27 12:28:25,804 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:25,967 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 24 [2018-10-27 12:28:26,095 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-10-27 12:28:26,355 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 74 proven. 27 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-27 12:28:26,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:26,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2018-10-27 12:28:26,377 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:26,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 12:28:26,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 12:28:26,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:28:26,379 INFO L87 Difference]: Start difference. First operand 9312 states and 13064 transitions. Second operand 12 states. [2018-10-27 12:28:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:41,292 INFO L93 Difference]: Finished difference Result 58471 states and 98621 transitions. [2018-10-27 12:28:41,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-27 12:28:41,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 277 [2018-10-27 12:28:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:41,593 INFO L225 Difference]: With dead ends: 58471 [2018-10-27 12:28:41,593 INFO L226 Difference]: Without dead ends: 50213 [2018-10-27 12:28:41,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1898, Invalid=10312, Unknown=0, NotChecked=0, Total=12210 [2018-10-27 12:28:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50213 states. [2018-10-27 12:28:43,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50213 to 47348. [2018-10-27 12:28:43,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47348 states. [2018-10-27 12:28:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47348 states to 47348 states and 65741 transitions. [2018-10-27 12:28:43,655 INFO L78 Accepts]: Start accepts. Automaton has 47348 states and 65741 transitions. Word has length 277 [2018-10-27 12:28:43,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:43,656 INFO L481 AbstractCegarLoop]: Abstraction has 47348 states and 65741 transitions. [2018-10-27 12:28:43,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 12:28:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 47348 states and 65741 transitions. [2018-10-27 12:28:43,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-27 12:28:43,721 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:43,722 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:28:43,722 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:43,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:43,723 INFO L82 PathProgramCache]: Analyzing trace with hash -490604808, now seen corresponding path program 1 times [2018-10-27 12:28:43,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:43,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:43,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:43,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:43,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:44,254 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 12:28:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 85 proven. 16 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 12:28:44,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:44,465 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:44,465 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-27 12:28:44,465 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [45], [49], [53], [57], [61], [64], [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], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:44,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:44,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:45,668 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:45,668 INFO L272 AbstractInterpreter]: Visited 213 different actions 418 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:28:45,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:45,682 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:45,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:45,682 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 12:28:45,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:45,690 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:45,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:28:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 12:28:46,417 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:28:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 12:28:47,118 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:28:47,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 12:28:47,119 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:28:47,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:28:47,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:28:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:28:47,120 INFO L87 Difference]: Start difference. First operand 47348 states and 65741 transitions. Second operand 9 states. [2018-10-27 12:28:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:55,640 INFO L93 Difference]: Finished difference Result 115687 states and 171012 transitions. [2018-10-27 12:28:55,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-27 12:28:55,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 281 [2018-10-27 12:28:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:55,970 INFO L225 Difference]: With dead ends: 115687 [2018-10-27 12:28:55,970 INFO L226 Difference]: Without dead ends: 70046 [2018-10-27 12:28:56,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 596 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=562, Invalid=2090, Unknown=0, NotChecked=0, Total=2652 [2018-10-27 12:28:56,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70046 states. [2018-10-27 12:28:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70046 to 67469. [2018-10-27 12:28:57,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67469 states. [2018-10-27 12:28:57,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67469 states to 67469 states and 84687 transitions. [2018-10-27 12:28:57,893 INFO L78 Accepts]: Start accepts. Automaton has 67469 states and 84687 transitions. Word has length 281 [2018-10-27 12:28:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:57,893 INFO L481 AbstractCegarLoop]: Abstraction has 67469 states and 84687 transitions. [2018-10-27 12:28:57,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:28:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 67469 states and 84687 transitions. [2018-10-27 12:28:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-27 12:28:57,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:57,945 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:57,945 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:57,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:57,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1134781832, now seen corresponding path program 1 times [2018-10-27 12:28:57,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:57,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:57,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:57,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:57,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:58,356 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:28:58,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:58,356 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:58,357 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-10-27 12:28:58,357 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [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], [276], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:58,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:58,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:59,792 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:28:59,792 INFO L272 AbstractInterpreter]: Visited 212 different actions 416 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:28:59,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:59,802 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:28:59,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:59,802 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 12:28:59,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:59,809 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:28:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:59,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:29:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:29:00,123 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:29:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:29:00,636 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:29:00,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 12:29:00,637 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:29:00,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:29:00,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:29:00,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:29:00,638 INFO L87 Difference]: Start difference. First operand 67469 states and 84687 transitions. Second operand 9 states. [2018-10-27 12:29:05,701 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-27 12:29:11,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:29:11,210 INFO L93 Difference]: Finished difference Result 189393 states and 258022 transitions. [2018-10-27 12:29:11,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-27 12:29:11,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 297 [2018-10-27 12:29:11,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:29:11,785 INFO L225 Difference]: With dead ends: 189393 [2018-10-27 12:29:11,785 INFO L226 Difference]: Without dead ends: 119615 [2018-10-27 12:29:12,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=487, Invalid=2269, Unknown=0, NotChecked=0, Total=2756 [2018-10-27 12:29:12,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119615 states. [2018-10-27 12:29:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119615 to 113693. [2018-10-27 12:29:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113693 states. [2018-10-27 12:29:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113693 states to 113693 states and 137864 transitions. [2018-10-27 12:29:16,442 INFO L78 Accepts]: Start accepts. Automaton has 113693 states and 137864 transitions. Word has length 297 [2018-10-27 12:29:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:29:16,442 INFO L481 AbstractCegarLoop]: Abstraction has 113693 states and 137864 transitions. [2018-10-27 12:29:16,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:29:16,443 INFO L276 IsEmpty]: Start isEmpty. Operand 113693 states and 137864 transitions. [2018-10-27 12:29:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-27 12:29:16,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:29:16,547 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:29:16,547 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:29:16,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:29:16,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1518295919, now seen corresponding path program 1 times [2018-10-27 12:29:16,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:29:16,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:29:16,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:29:16,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:29:16,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:29:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:29:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 189 proven. 34 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-10-27 12:29:16,936 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:29:16,936 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:29:16,937 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 350 with the following transitions: [2018-10-27 12:29:16,937 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], [96], [100], [104], [108], [112], [116], [120], [123], [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], [240], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:29:16,946 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:29:16,947 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:29:19,058 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:29:19,058 INFO L272 AbstractInterpreter]: Visited 214 different actions 641 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-27 12:29:19,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:29:19,070 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:29:19,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:29:19,070 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 12:29:19,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:29:19,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:29:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:29:19,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:29:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 183 proven. 30 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-27 12:29:19,447 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:29:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-27 12:29:20,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:29:20,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-10-27 12:29:20,234 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:29:20,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:29:20,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:29:20,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:29:20,236 INFO L87 Difference]: Start difference. First operand 113693 states and 137864 transitions. Second operand 8 states. [2018-10-27 12:29:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:29:32,531 INFO L93 Difference]: Finished difference Result 368132 states and 479793 transitions. [2018-10-27 12:29:32,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-27 12:29:32,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 349 [2018-10-27 12:29:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:29:33,837 INFO L225 Difference]: With dead ends: 368132 [2018-10-27 12:29:33,837 INFO L226 Difference]: Without dead ends: 260638 [2018-10-27 12:29:34,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 722 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=317, Invalid=1089, Unknown=0, NotChecked=0, Total=1406 [2018-10-27 12:29:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260638 states. [2018-10-27 12:29:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260638 to 247823. [2018-10-27 12:29:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247823 states. [2018-10-27 12:29:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247823 states to 247823 states and 299212 transitions. [2018-10-27 12:29:46,494 INFO L78 Accepts]: Start accepts. Automaton has 247823 states and 299212 transitions. Word has length 349 [2018-10-27 12:29:46,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:29:46,495 INFO L481 AbstractCegarLoop]: Abstraction has 247823 states and 299212 transitions. [2018-10-27 12:29:46,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:29:46,495 INFO L276 IsEmpty]: Start isEmpty. Operand 247823 states and 299212 transitions. [2018-10-27 12:29:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-27 12:29:46,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:29:46,638 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:29:46,638 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:29:46,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:29:46,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1077315670, now seen corresponding path program 1 times [2018-10-27 12:29:46,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:29:46,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:29:46,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:29:46,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:29:46,640 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:29:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:29:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 181 proven. 29 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-27 12:29:46,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:29:46,975 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:29:46,976 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 375 with the following transitions: [2018-10-27 12:29:46,976 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [36], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [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], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1117], [1119], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:29:46,980 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:29:46,980 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:29:47,957 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:29:47,957 INFO L272 AbstractInterpreter]: Visited 213 different actions 420 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 12:29:47,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:29:47,963 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:29:50,072 INFO L227 lantSequenceWeakener]: Weakened 371 states. On average, predicates are now at 72.91% of their original sizes. [2018-10-27 12:29:50,073 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:29:50,555 INFO L415 sIntCurrentIteration]: We unified 373 AI predicates to 373 [2018-10-27 12:29:50,555 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:29:50,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:29:50,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-27 12:29:50,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:29:50,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 12:29:50,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 12:29:50,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2018-10-27 12:29:50,557 INFO L87 Difference]: Start difference. First operand 247823 states and 299212 transitions. Second operand 21 states. Received shutdown request... [2018-10-27 12:29:53,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 12:29:53,893 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:29:53,899 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:29:53,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:29:53 BoogieIcfgContainer [2018-10-27 12:29:53,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:29:53,900 INFO L168 Benchmark]: Toolchain (without parser) took 212731.17 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 12:29:53,901 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 12:29:53,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1123.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:53,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 295.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -877.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:53,904 INFO L168 Benchmark]: Boogie Preprocessor took 103.51 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:53,904 INFO L168 Benchmark]: RCFGBuilder took 4467.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.9 MB). Peak memory consumption was 267.9 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:53,905 INFO L168 Benchmark]: TraceAbstraction took 206736.37 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 972.7 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:53,910 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 1123.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 295.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -877.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.51 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4467.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 267.9 MB). Peak memory consumption was 267.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206736.37 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.5 GB). Peak memory consumption was 972.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1635]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1635). Cancelled while BasicCegarLoop was constructing difference of abstraction (247823states) and FLOYD_HOARE automaton (currently 7 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (83 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 206.6s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 149.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3078 SDtfs, 25306 SDslu, 4918 SDs, 0 SdLazy, 38909 SolverSat, 8437 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 4808 GetRequests, 4449 SyntacticMatches, 10 SemanticMatches, 349 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7045 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247823occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.2s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.9990288787894104 AbsIntWeakeningRatio, 0.23174971031286212 AbsIntAvgWeakeningVarsNumRemoved, 56.67670915411356 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 24426 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 5206 NumberOfCodeBlocks, 5206 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 6918 ConstructedInterpolants, 0 QuantifiedInterpolants, 5142816 SizeOfPredicates, 18 NumberOfNonLiveVariables, 7408 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 2443/2707 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown