java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:15:54,321 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:15:54,323 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:15:54,336 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:15:54,336 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:15:54,337 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:15:54,339 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:15:54,341 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:15:54,342 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:15:54,343 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:15:54,344 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:15:54,348 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:15:54,349 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:15:54,350 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:15:54,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:15:54,355 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:15:54,356 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:15:54,358 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:15:54,363 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:15:54,366 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:15:54,367 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:15:54,368 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:15:54,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:15:54,371 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:15:54,371 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:15:54,372 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:15:54,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:15:54,375 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:15:54,375 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:15:54,376 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:15:54,377 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:15:54,377 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:15:54,377 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:15:54,378 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:15:54,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:15:54,381 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:15:54,382 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:15:54,407 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:15:54,409 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:15:54,410 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:15:54,410 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:15:54,410 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:15:54,410 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:15:54,410 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:15:54,411 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:15:54,411 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:15:54,411 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:15:54,411 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:15:54,411 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:15:54,414 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:15:54,415 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:15:54,416 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:15:54,416 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:15:54,416 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:15:54,416 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:15:54,417 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:15:54,418 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:15:54,418 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:15:54,418 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:15:54,418 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:15:54,418 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:15:54,419 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:15:54,419 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:15:54,419 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:15:54,419 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:15:54,420 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:15:54,420 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:15:54,420 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:15:54,420 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:15:54,420 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:15:54,421 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:15:54,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:15:54,507 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:15:54,511 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:15:54,513 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:15:54,513 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:15:54,514 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-11-07 14:15:54,585 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b9c0231/54b14e667d6042c3b7655c00b04c465d/FLAGe222938f8 [2018-11-07 14:15:55,180 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:15:55,181 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label25_true-unreach-call.c [2018-11-07 14:15:55,204 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b9c0231/54b14e667d6042c3b7655c00b04c465d/FLAGe222938f8 [2018-11-07 14:15:55,228 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3b9c0231/54b14e667d6042c3b7655c00b04c465d [2018-11-07 14:15:55,245 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:15:55,247 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:15:55,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:15:55,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:15:55,255 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:15:55,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:55" (1/1) ... [2018-11-07 14:15:55,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37ef60d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:55, skipping insertion in model container [2018-11-07 14:15:55,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:55" (1/1) ... [2018-11-07 14:15:55,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:15:55,334 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:15:55,903 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:15:55,908 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:15:56,018 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:15:56,035 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:15:56,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56 WrapperNode [2018-11-07 14:15:56,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:15:56,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:15:56,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:15:56,038 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:15:56,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:15:56,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:15:56,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:15:56,177 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:15:56,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... [2018-11-07 14:15:56,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:15:56,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:15:56,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:15:56,300 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:15:56,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:15:56,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:15:56,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:15:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:15:56,381 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:15:56,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:15:56,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:15:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:15:56,382 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:15:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:15:59,634 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:15:59,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:59 BoogieIcfgContainer [2018-11-07 14:15:59,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:15:59,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:15:59,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:15:59,640 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:15:59,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:55" (1/3) ... [2018-11-07 14:15:59,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a471f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:59, skipping insertion in model container [2018-11-07 14:15:59,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:56" (2/3) ... [2018-11-07 14:15:59,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a471f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:59, skipping insertion in model container [2018-11-07 14:15:59,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:59" (3/3) ... [2018-11-07 14:15:59,645 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label25_true-unreach-call.c [2018-11-07 14:15:59,655 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:15:59,666 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:15:59,683 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:15:59,723 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:15:59,723 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:15:59,723 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:15:59,723 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:15:59,724 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:15:59,724 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:15:59,724 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:15:59,724 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:15:59,754 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 14:15:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 14:15:59,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:15:59,767 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] [2018-11-07 14:15:59,769 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:15:59,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:15:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 382760497, now seen corresponding path program 1 times [2018-11-07 14:15:59,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:15:59,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:59,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:15:59,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:15:59,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:15:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:16:00,286 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:16:00,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:16:00,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:16:00,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:16:00,447 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:16:00,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:16:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:16:00,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:16:00,490 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 14:16:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:16:02,290 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 14:16:02,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:16:02,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-11-07 14:16:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:16:02,313 INFO L225 Difference]: With dead ends: 574 [2018-11-07 14:16:02,313 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 14:16:02,320 INFO L604 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 [2018-11-07 14:16:02,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 14:16:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 14:16:02,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 14:16:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-11-07 14:16:02,410 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 71 [2018-11-07 14:16:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:16:02,411 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-11-07 14:16:02,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:16:02,411 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-11-07 14:16:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 14:16:02,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:16:02,424 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:16:02,424 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:16:02,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:16:02,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1446129720, now seen corresponding path program 1 times [2018-11-07 14:16:02,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:16:02,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:02,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:16:02,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:02,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:16:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:16:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:16:02,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:16:02,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:16:02,749 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:16:02,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:16:02,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:16:02,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:16:02,753 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-11-07 14:16:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:16:05,165 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-11-07 14:16:05,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:16:05,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-11-07 14:16:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:16:05,176 INFO L225 Difference]: With dead ends: 1002 [2018-11-07 14:16:05,176 INFO L226 Difference]: Without dead ends: 652 [2018-11-07 14:16:05,180 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:16:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-11-07 14:16:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-11-07 14:16:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-11-07 14:16:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-11-07 14:16:05,230 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 141 [2018-11-07 14:16:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:16:05,231 INFO L480 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-11-07 14:16:05,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:16:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-11-07 14:16:05,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-07 14:16:05,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:16:05,235 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, 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] [2018-11-07 14:16:05,236 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:16:05,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:16:05,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1467562684, now seen corresponding path program 1 times [2018-11-07 14:16:05,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:16:05,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:05,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:16:05,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:05,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:16:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:16:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:16:05,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:16:05,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:16:05,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:16:05,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:16:05,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:16:05,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:16:05,569 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 4 states. [2018-11-07 14:16:10,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:16:10,151 INFO L93 Difference]: Finished difference Result 2128 states and 3336 transitions. [2018-11-07 14:16:10,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:16:10,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-11-07 14:16:10,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:16:10,165 INFO L225 Difference]: With dead ends: 2128 [2018-11-07 14:16:10,165 INFO L226 Difference]: Without dead ends: 904 [2018-11-07 14:16:10,176 INFO L604 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 [2018-11-07 14:16:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2018-11-07 14:16:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2018-11-07 14:16:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2018-11-07 14:16:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1277 transitions. [2018-11-07 14:16:10,231 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1277 transitions. Word has length 151 [2018-11-07 14:16:10,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:16:10,232 INFO L480 AbstractCegarLoop]: Abstraction has 904 states and 1277 transitions. [2018-11-07 14:16:10,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:16:10,233 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1277 transitions. [2018-11-07 14:16:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-07 14:16:10,237 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:16:10,237 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, 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] [2018-11-07 14:16:10,238 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:16:10,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:16:10,238 INFO L82 PathProgramCache]: Analyzing trace with hash -774507349, now seen corresponding path program 1 times [2018-11-07 14:16:10,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:16:10,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:10,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:16:10,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:10,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:16:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:16:10,545 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:16:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:16:10,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:16:10,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:16:10,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:16:10,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:16:10,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:16:10,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:16:10,649 INFO L87 Difference]: Start difference. First operand 904 states and 1277 transitions. Second operand 6 states. [2018-11-07 14:16:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:16:13,850 INFO L93 Difference]: Finished difference Result 2127 states and 3078 transitions. [2018-11-07 14:16:13,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:16:13,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2018-11-07 14:16:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:16:13,868 INFO L225 Difference]: With dead ends: 2127 [2018-11-07 14:16:13,868 INFO L226 Difference]: Without dead ends: 1229 [2018-11-07 14:16:13,872 INFO L604 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 [2018-11-07 14:16:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-11-07 14:16:13,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2018-11-07 14:16:13,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-11-07 14:16:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1646 transitions. [2018-11-07 14:16:13,924 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1646 transitions. Word has length 194 [2018-11-07 14:16:13,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:16:13,924 INFO L480 AbstractCegarLoop]: Abstraction has 1208 states and 1646 transitions. [2018-11-07 14:16:13,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:16:13,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1646 transitions. [2018-11-07 14:16:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-11-07 14:16:13,932 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:16:13,932 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:16:13,933 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:16:13,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:16:13,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1703489504, now seen corresponding path program 1 times [2018-11-07 14:16:13,933 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:16:13,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:13,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:16:13,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:16:13,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:16:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:16:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 128 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:16:14,301 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:16:14,302 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:16:14,303 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-11-07 14:16:14,305 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:16:14,356 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:16:14,357 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:16:14,939 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:16:14,941 INFO L272 AbstractInterpreter]: Visited 93 different actions 93 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 14:16:14,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:16:14,965 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:16:15,579 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 73.67% of their original sizes. [2018-11-07 14:16:15,579 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:16:15,925 INFO L415 sIntCurrentIteration]: We unified 241 AI predicates to 241 [2018-11-07 14:16:15,925 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:16:15,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:16:15,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 14:16:15,926 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:16:15,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:16:15,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:16:15,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:16:15,928 INFO L87 Difference]: Start difference. First operand 1208 states and 1646 transitions. Second operand 7 states. [2018-11-07 14:16:18,067 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:19:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:19:33,856 INFO L93 Difference]: Finished difference Result 2556 states and 3478 transitions. [2018-11-07 14:19:33,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:19:33,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2018-11-07 14:19:33,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:19:33,867 INFO L225 Difference]: With dead ends: 2556 [2018-11-07 14:19:33,868 INFO L226 Difference]: Without dead ends: 1354 [2018-11-07 14:19:33,872 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 242 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:19:33,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-11-07 14:19:33,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2018-11-07 14:19:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-11-07 14:19:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1796 transitions. [2018-11-07 14:19:33,918 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1796 transitions. Word has length 242 [2018-11-07 14:19:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:19:33,919 INFO L480 AbstractCegarLoop]: Abstraction has 1352 states and 1796 transitions. [2018-11-07 14:19:33,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:19:33,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1796 transitions. [2018-11-07 14:19:33,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-11-07 14:19:33,929 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:19:33,929 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 14:19:33,930 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:19:33,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash -677086258, now seen corresponding path program 1 times [2018-11-07 14:19:33,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:19:33,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:33,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:19:33,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:19:33,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:19:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:19:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 266 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 14:19:35,123 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:19:35,123 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:19:35,124 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 314 with the following transitions: [2018-11-07 14:19:35,124 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [469], [471], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 14:19:35,128 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:19:35,129 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:19:35,243 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:19:35,457 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:19:35,457 INFO L272 AbstractInterpreter]: Visited 97 different actions 278 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 14:19:35,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:19:35,462 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:19:35,937 INFO L227 lantSequenceWeakener]: Weakened 102 states. On average, predicates are now at 75.47% of their original sizes. [2018-11-07 14:19:35,938 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:19:37,051 INFO L415 sIntCurrentIteration]: We unified 312 AI predicates to 312 [2018-11-07 14:19:37,052 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:19:37,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:19:37,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [14] total 33 [2018-11-07 14:19:37,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:19:37,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 14:19:37,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 14:19:37,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 14:19:37,054 INFO L87 Difference]: Start difference. First operand 1352 states and 1796 transitions. Second operand 21 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown