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_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:32:46,241 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:32:46,243 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:32:46,255 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:32:46,255 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:32:46,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:32:46,264 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:32:46,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:32:46,268 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:32:46,269 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:32:46,270 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:32:46,274 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:32:46,275 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:32:46,278 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:32:46,282 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:32:46,283 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:32:46,286 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:32:46,288 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:32:46,293 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:32:46,295 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:32:46,296 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:32:46,299 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:32:46,302 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:32:46,303 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:32:46,303 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:32:46,304 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:32:46,305 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:32:46,305 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:32:46,306 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:32:46,307 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:32:46,307 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:32:46,308 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 12:32:46,308 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:32:46,308 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:32:46,309 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:32:46,310 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:32:46,310 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 12:32:46,325 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:32:46,326 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:32:46,326 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:32:46,327 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:32:46,327 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:32:46,327 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:32:46,327 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:32:46,328 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:32:46,328 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:32:46,328 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:32:46,328 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:32:46,328 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:32:46,329 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:32:46,329 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:32:46,330 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:32:46,330 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:32:46,330 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:32:46,330 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:32:46,330 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:32:46,331 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:32:46,331 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:32:46,331 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:32:46,331 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:32:46,331 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:32:46,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:32:46,332 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:32:46,332 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:32:46,332 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:32:46,332 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:32:46,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:32:46,333 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:32:46,333 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:32:46,333 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:32:46,333 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:32:46,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:32:46,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:32:46,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:32:46,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:32:46,417 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:32:46,418 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-10-27 12:32:46,488 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78adc145a/502f502afee24b2696b69c2417a77bc4/FLAGc36054c78 [2018-10-27 12:32:47,156 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:32:47,157 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-10-27 12:32:47,175 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78adc145a/502f502afee24b2696b69c2417a77bc4/FLAGc36054c78 [2018-10-27 12:32:47,195 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78adc145a/502f502afee24b2696b69c2417a77bc4 [2018-10-27 12:32:47,209 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:32:47,211 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:32:47,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:32:47,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:32:47,216 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:32:47,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:47" (1/1) ... [2018-10-27 12:32:47,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7203e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:47, skipping insertion in model container [2018-10-27 12:32:47,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:47" (1/1) ... [2018-10-27 12:32:47,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:32:47,329 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:32:48,050 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:32:48,055 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:32:48,353 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:32:48,384 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:32:48,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48 WrapperNode [2018-10-27 12:32:48,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:32:48,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:32:48,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:32:48,386 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:32:48,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:32:48,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:32:48,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:32:48,688 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:32:48,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (1/1) ... [2018-10-27 12:32:48,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:32:48,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:32:48,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:32:48,815 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:32:48,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (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 12:32:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:32:48,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:32:48,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:32:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:32:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:32:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:32:48,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:32:48,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:32:53,554 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:32:53,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:53 BoogieIcfgContainer [2018-10-27 12:32:53,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:32:53,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:32:53,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:32:53,560 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:32:53,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:47" (1/3) ... [2018-10-27 12:32:53,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574e7a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:53, skipping insertion in model container [2018-10-27 12:32:53,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:48" (2/3) ... [2018-10-27 12:32:53,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574e7a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:53, skipping insertion in model container [2018-10-27 12:32:53,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:53" (3/3) ... [2018-10-27 12:32:53,565 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label41_true-unreach-call.c [2018-10-27 12:32:53,576 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:32:53,587 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:32:53,606 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:32:53,648 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:32:53,648 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:32:53,649 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:32:53,649 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:32:53,649 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:32:53,649 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:32:53,649 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:32:53,650 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:32:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:32:53,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-27 12:32:53,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:32:53,703 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] [2018-10-27 12:32:53,705 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:32:53,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:32:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1737651188, now seen corresponding path program 1 times [2018-10-27 12:32:53,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:32:53,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:32:53,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:32:53,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:32:53,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:32:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:32:54,773 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:32:54,989 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 12:32:54,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:32:54,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 12:32:54,992 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:32:54,997 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 12:32:55,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 12:32:55,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:32:55,013 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 12:32:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:32:58,401 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-10-27 12:32:58,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 12:32:58,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2018-10-27 12:32:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:32:58,431 INFO L225 Difference]: With dead ends: 1074 [2018-10-27 12:32:58,431 INFO L226 Difference]: Without dead ends: 756 [2018-10-27 12:32:58,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:32:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-10-27 12:32:58,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-10-27 12:32:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-27 12:32:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-10-27 12:32:58,532 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 189 [2018-10-27 12:32:58,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:32:58,533 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-10-27 12:32:58,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 12:32:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-10-27 12:32:58,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-27 12:32:58,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:32:58,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:32:58,543 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:32:58,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:32:58,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1467958639, now seen corresponding path program 1 times [2018-10-27 12:32:58,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:32:58,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:32:58,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:32:58,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:32:58,545 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:32:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:32:58,877 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:32:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:32:58,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:32:58,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:32:58,980 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:32:58,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:32:58,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:32:58,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:32:58,982 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-10-27 12:33:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:02,533 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-10-27 12:33:02,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 12:33:02,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-27 12:33:02,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:02,553 INFO L225 Difference]: With dead ends: 1482 [2018-10-27 12:33:02,553 INFO L226 Difference]: Without dead ends: 968 [2018-10-27 12:33:02,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:33:02,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-27 12:33:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-10-27 12:33:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-10-27 12:33:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-10-27 12:33:02,655 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 217 [2018-10-27 12:33:02,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:02,655 INFO L481 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-10-27 12:33:02,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:33:02,656 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-10-27 12:33:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-27 12:33:02,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:02,662 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:02,662 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:02,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:02,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1187874820, now seen corresponding path program 1 times [2018-10-27 12:33:02,663 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:02,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:02,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:02,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:02,664 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:33:03,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:33:03,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:33:03,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:03,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:33:03,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:33:03,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:03,074 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 3 states. [2018-10-27 12:33:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:05,612 INFO L93 Difference]: Finished difference Result 2535 states and 4260 transitions. [2018-10-27 12:33:05,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:33:05,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-27 12:33:05,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:05,625 INFO L225 Difference]: With dead ends: 2535 [2018-10-27 12:33:05,625 INFO L226 Difference]: Without dead ends: 1592 [2018-10-27 12:33:05,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:33:05,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-10-27 12:33:05,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1590. [2018-10-27 12:33:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2018-10-27 12:33:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2503 transitions. [2018-10-27 12:33:05,697 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2503 transitions. Word has length 235 [2018-10-27 12:33:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:05,697 INFO L481 AbstractCegarLoop]: Abstraction has 1590 states and 2503 transitions. [2018-10-27 12:33:05,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:33:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2503 transitions. [2018-10-27 12:33:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-27 12:33:05,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:05,708 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:33:05,708 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:05,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:05,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1850495347, now seen corresponding path program 1 times [2018-10-27 12:33:05,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:05,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:05,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:05,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:05,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:06,034 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:33:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:33:06,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:33:06,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:33:06,198 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-27 12:33:06,201 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [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], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:33:06,267 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:33:06,267 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:33:07,686 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:33:07,689 INFO L272 AbstractInterpreter]: Visited 190 different actions 190 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:33:07,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:07,735 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:33:09,056 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 72.99% of their original sizes. [2018-10-27 12:33:09,057 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:33:10,451 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-10-27 12:33:10,451 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:33:10,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:33:10,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-27 12:33:10,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:10,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 12:33:10,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 12:33:10,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-10-27 12:33:10,454 INFO L87 Difference]: Start difference. First operand 1590 states and 2503 transitions. Second operand 17 states. [2018-10-27 12:33:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:33:39,230 INFO L93 Difference]: Finished difference Result 3384 states and 5321 transitions. [2018-10-27 12:33:39,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:33:39,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 251 [2018-10-27 12:33:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:33:39,240 INFO L225 Difference]: With dead ends: 3384 [2018-10-27 12:33:39,241 INFO L226 Difference]: Without dead ends: 1800 [2018-10-27 12:33:39,247 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-10-27 12:33:39,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-10-27 12:33:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-10-27 12:33:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-10-27 12:33:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2720 transitions. [2018-10-27 12:33:39,302 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2720 transitions. Word has length 251 [2018-10-27 12:33:39,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:33:39,302 INFO L481 AbstractCegarLoop]: Abstraction has 1798 states and 2720 transitions. [2018-10-27 12:33:39,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 12:33:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2720 transitions. [2018-10-27 12:33:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-27 12:33:39,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:33:39,312 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:33:39,313 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:33:39,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:39,313 INFO L82 PathProgramCache]: Analyzing trace with hash 519379344, now seen corresponding path program 1 times [2018-10-27 12:33:39,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:33:39,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:39,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:33:39,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:33:39,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:33:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:33:39,621 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 69 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-27 12:33:39,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:33:39,621 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:33:39,622 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-27 12:33:39,622 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [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], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:33:39,633 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:33:39,633 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:33:41,012 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:33:41,012 INFO L272 AbstractInterpreter]: Visited 194 different actions 382 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 12:33:41,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:33:41,021 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:33:42,454 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 78.98% of their original sizes. [2018-10-27 12:33:42,455 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:33:43,660 INFO L415 sIntCurrentIteration]: We unified 262 AI predicates to 262 [2018-10-27 12:33:43,661 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:33:43,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:33:43,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-10-27 12:33:43,661 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:33:43,662 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-27 12:33:43,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-27 12:33:43,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2018-10-27 12:33:43,663 INFO L87 Difference]: Start difference. First operand 1798 states and 2720 transitions. Second operand 24 states. [2018-10-27 12:34:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:34:42,511 INFO L93 Difference]: Finished difference Result 4013 states and 6084 transitions. [2018-10-27 12:34:42,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 12:34:42,511 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 263 [2018-10-27 12:34:42,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:34:42,523 INFO L225 Difference]: With dead ends: 4013 [2018-10-27 12:34:42,523 INFO L226 Difference]: Without dead ends: 2429 [2018-10-27 12:34:42,529 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2018-10-27 12:34:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-10-27 12:34:42,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2426. [2018-10-27 12:34:42,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2018-10-27 12:34:42,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3396 transitions. [2018-10-27 12:34:42,594 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3396 transitions. Word has length 263 [2018-10-27 12:34:42,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:34:42,594 INFO L481 AbstractCegarLoop]: Abstraction has 2426 states and 3396 transitions. [2018-10-27 12:34:42,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-27 12:34:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3396 transitions. [2018-10-27 12:34:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-27 12:34:42,604 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:34:42,604 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:34:42,605 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:34:42,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:42,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1300281084, now seen corresponding path program 1 times [2018-10-27 12:34:42,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:34:42,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:42,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:34:42,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:34:42,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:34:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:34:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-27 12:34:43,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:34:43,089 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:34:43,089 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-10-27 12:34:43,093 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [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], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:34:43,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:34:43,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:34:44,447 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:34:44,447 INFO L272 AbstractInterpreter]: Visited 194 different actions 381 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 12:34:44,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:34:44,453 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:34:45,372 INFO L227 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 72.69% of their original sizes. [2018-10-27 12:34:45,372 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:34:45,956 INFO L415 sIntCurrentIteration]: We unified 272 AI predicates to 272 [2018-10-27 12:34:45,956 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:34:45,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:34:45,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-27 12:34:45,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:34:45,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-27 12:34:45,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-27 12:34:45,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-10-27 12:34:45,958 INFO L87 Difference]: Start difference. First operand 2426 states and 3396 transitions. Second operand 19 states. [2018-10-27 12:35:32,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:32,417 INFO L93 Difference]: Finished difference Result 5300 states and 7745 transitions. [2018-10-27 12:35:32,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:35:32,418 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 273 [2018-10-27 12:35:32,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:32,434 INFO L225 Difference]: With dead ends: 5300 [2018-10-27 12:35:32,434 INFO L226 Difference]: Without dead ends: 3716 [2018-10-27 12:35:32,442 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2018-10-27 12:35:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2018-10-27 12:35:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3714. [2018-10-27 12:35:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2018-10-27 12:35:32,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4892 transitions. [2018-10-27 12:35:32,532 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4892 transitions. Word has length 273 [2018-10-27 12:35:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:32,532 INFO L481 AbstractCegarLoop]: Abstraction has 3714 states and 4892 transitions. [2018-10-27 12:35:32,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-27 12:35:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4892 transitions. [2018-10-27 12:35:32,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-27 12:35:32,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:32,547 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:35:32,547 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:32,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:32,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1107433359, now seen corresponding path program 1 times [2018-10-27 12:35:32,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:32,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:32,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:32,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:32,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:35:32,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:32,945 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:32,945 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-10-27 12:35:32,946 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [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], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:32,952 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:32,952 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:35,080 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:35,080 INFO L272 AbstractInterpreter]: Visited 196 different actions 585 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:35:35,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:35,090 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:35,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:35,090 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 12:35:35,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:35,100 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:35,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:35,630 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-27 12:35:35,630 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-10-27 12:35:35,873 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:35:35,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-10-27 12:35:35,873 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:35:35,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:35:35,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:35:35,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-27 12:35:35,875 INFO L87 Difference]: Start difference. First operand 3714 states and 4892 transitions. Second operand 3 states. [2018-10-27 12:35:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:38,279 INFO L93 Difference]: Finished difference Result 8531 states and 12115 transitions. [2018-10-27 12:35:38,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:35:38,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-10-27 12:35:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:38,307 INFO L225 Difference]: With dead ends: 8531 [2018-10-27 12:35:38,308 INFO L226 Difference]: Without dead ends: 6078 [2018-10-27 12:35:38,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 601 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-10-27 12:35:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2018-10-27 12:35:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6078 to 6062. [2018-10-27 12:35:38,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6062 states. [2018-10-27 12:35:38,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 8249 transitions. [2018-10-27 12:35:38,488 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 8249 transitions. Word has length 301 [2018-10-27 12:35:38,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:38,489 INFO L481 AbstractCegarLoop]: Abstraction has 6062 states and 8249 transitions. [2018-10-27 12:35:38,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:35:38,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 8249 transitions. [2018-10-27 12:35:38,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-27 12:35:38,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:38,513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:38,513 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:38,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:38,514 INFO L82 PathProgramCache]: Analyzing trace with hash -718662696, now seen corresponding path program 1 times [2018-10-27 12:35:38,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:38,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:38,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:38,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:38,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 159 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-27 12:35:39,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:39,091 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:39,091 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 319 with the following transitions: [2018-10-27 12:35:39,091 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [213], [218], [220], [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], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:39,096 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:39,097 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:42,043 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:35:42,044 INFO L272 AbstractInterpreter]: Visited 196 different actions 587 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 12:35:42,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:42,048 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:35:42,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:42,048 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 12:35:42,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:42,056 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:35:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:42,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:35:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-27 12:35:42,623 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:35:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-27 12:35:42,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:35:42,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-27 12:35:42,795 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:35:42,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:35:42,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:35:42,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:35:42,797 INFO L87 Difference]: Start difference. First operand 6062 states and 8249 transitions. Second operand 9 states. [2018-10-27 12:35:45,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:35:45,613 INFO L93 Difference]: Finished difference Result 11114 states and 15798 transitions. [2018-10-27 12:35:45,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 12:35:45,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 318 [2018-10-27 12:35:45,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:35:45,644 INFO L225 Difference]: With dead ends: 11114 [2018-10-27 12:35:45,644 INFO L226 Difference]: Without dead ends: 6313 [2018-10-27 12:35:45,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 637 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-10-27 12:35:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2018-10-27 12:35:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 6134. [2018-10-27 12:35:45,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6134 states. [2018-10-27 12:35:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6134 states to 6134 states and 7692 transitions. [2018-10-27 12:35:45,826 INFO L78 Accepts]: Start accepts. Automaton has 6134 states and 7692 transitions. Word has length 318 [2018-10-27 12:35:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:35:45,826 INFO L481 AbstractCegarLoop]: Abstraction has 6134 states and 7692 transitions. [2018-10-27 12:35:45,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:35:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 6134 states and 7692 transitions. [2018-10-27 12:35:45,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-27 12:35:45,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:35:45,848 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:35:45,849 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:35:45,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:45,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1691638936, now seen corresponding path program 1 times [2018-10-27 12:35:45,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:35:45,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:45,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:35:45,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:35:45,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:35:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:35:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:35:46,522 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:35:46,522 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:35:46,522 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-10-27 12:35:46,523 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [213], [218], [220], [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], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:35:46,528 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:35:46,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:35:49,273 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:35:49,274 INFO L272 AbstractInterpreter]: Visited 195 different actions 580 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 12:35:49,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:35:49,281 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:35:50,823 INFO L227 lantSequenceWeakener]: Weakened 343 states. On average, predicates are now at 72.05% of their original sizes. [2018-10-27 12:35:50,824 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:35:51,215 INFO L415 sIntCurrentIteration]: We unified 345 AI predicates to 345 [2018-10-27 12:35:51,215 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:35:51,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:35:51,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-10-27 12:35:51,216 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:35:51,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-27 12:35:51,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-27 12:35:51,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-10-27 12:35:51,217 INFO L87 Difference]: Start difference. First operand 6134 states and 7692 transitions. Second operand 21 states. Received shutdown request... [2018-10-27 12:36:45,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-27 12:36:45,493 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:36:45,500 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:36:45,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:36:45 BoogieIcfgContainer [2018-10-27 12:36:45,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:36:45,501 INFO L168 Benchmark]: Toolchain (without parser) took 238291.01 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 12:36:45,502 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 12:36:45,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1172.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:45,504 INFO L168 Benchmark]: Boogie Procedure Inliner took 302.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:45,505 INFO L168 Benchmark]: Boogie Preprocessor took 126.15 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:45,505 INFO L168 Benchmark]: RCFGBuilder took 4741.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 247.4 MB). Peak memory consumption was 247.4 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:45,506 INFO L168 Benchmark]: TraceAbstraction took 231943.56 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -744.8 MB). Peak memory consumption was 945.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:36:45,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1172.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 302.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -855.0 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.15 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4741.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 247.4 MB). Peak memory consumption was 247.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231943.56 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -744.8 MB). Peak memory consumption was 945.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1581]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1581). Cancelled while BasicCegarLoop was constructing difference of abstraction (6134states) and FLOYD_HOARE automaton (currently 38 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (10124 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 231.8s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 203.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2460 SDtfs, 11388 SDslu, 3940 SDs, 0 SdLazy, 22091 SolverSat, 2537 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.2s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 2467 GetRequests, 2301 SyntacticMatches, 8 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6134occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.1s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9990921516863356 AbsIntWeakeningRatio, 0.254207263064659 AbsIntAvgWeakeningVarsNumRemoved, 58.7555358724535 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 459 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 3012 NumberOfCodeBlocks, 3012 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3618 ConstructedInterpolants, 0 QuantifiedInterpolants, 2173940 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2869 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 1729/1915 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown