java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:09:02,244 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:09:02,246 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:09:02,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:09:02,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:09:02,261 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:09:02,262 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:09:02,264 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:09:02,266 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:09:02,267 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:09:02,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:09:02,268 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:09:02,269 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:09:02,270 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:09:02,271 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:09:02,271 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:09:02,272 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:09:02,274 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:09:02,276 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:09:02,278 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:09:02,279 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:09:02,280 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:09:02,282 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:09:02,291 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:09:02,323 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:09:02,324 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:09:02,325 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:09:02,325 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:09:02,325 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:09:02,325 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:09:02,326 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:09:02,326 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:09:02,327 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:09:02,327 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:09:02,327 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:09:02,327 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:09:02,327 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:09:02,327 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:09:02,328 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:09:02,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:09:02,329 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:09:02,329 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:09:02,329 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:09:02,329 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:09:02,329 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:09:02,330 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:09:02,330 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:09:02,330 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:09:02,330 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:09:02,330 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:09:02,331 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:09:02,334 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:09:02,334 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:09:02,334 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:09:02,334 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:09:02,334 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:09:02,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:09:02,335 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:09:02,335 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:09:02,335 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:09:02,403 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:09:02,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:09:02,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:09:02,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:09:02,431 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:09:02,432 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-10-25 02:09:02,496 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a845cb078/1e07651c1dca479f9c00806df529bada/FLAG1ce37460b [2018-10-25 02:09:03,377 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:09:03,378 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label06_true-unreach-call.c [2018-10-25 02:09:03,421 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a845cb078/1e07651c1dca479f9c00806df529bada/FLAG1ce37460b [2018-10-25 02:09:03,437 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a845cb078/1e07651c1dca479f9c00806df529bada [2018-10-25 02:09:03,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:09:03,452 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:09:03,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:09:03,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:09:03,458 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:09:03,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:09:03" (1/1) ... [2018-10-25 02:09:03,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71739530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:03, skipping insertion in model container [2018-10-25 02:09:03,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:09:03" (1/1) ... [2018-10-25 02:09:03,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:09:03,729 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:09:05,638 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:09:05,644 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:09:07,155 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:09:07,218 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:09:07,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07 WrapperNode [2018-10-25 02:09:07,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:09:07,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:09:07,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:09:07,221 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:09:07,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:07,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:09:08,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:09:08,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:09:08,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:09:08,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (1/1) ... [2018-10-25 02:09:08,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:09:08,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:09:08,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:09:08,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:09:08,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (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 [2018-10-25 02:09:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:09:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:09:08,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-25 02:09:08,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-25 02:09:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-25 02:09:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-25 02:09:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-25 02:09:08,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-25 02:09:08,537 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-25 02:09:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-25 02:09:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:09:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:09:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:09:08,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:09:08,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:09:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:09:08,539 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:09:08,539 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:09:26,349 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:09:26,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:09:26 BoogieIcfgContainer [2018-10-25 02:09:26,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:09:26,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:09:26,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:09:26,355 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:09:26,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:09:03" (1/3) ... [2018-10-25 02:09:26,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fd4de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:09:26, skipping insertion in model container [2018-10-25 02:09:26,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:09:07" (2/3) ... [2018-10-25 02:09:26,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fd4de4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:09:26, skipping insertion in model container [2018-10-25 02:09:26,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:09:26" (3/3) ... [2018-10-25 02:09:26,358 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label06_true-unreach-call.c [2018-10-25 02:09:26,368 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:09:26,379 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:09:26,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:09:26,445 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:09:26,445 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:09:26,445 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:09:26,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:09:26,445 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:09:26,445 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:09:26,446 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:09:26,446 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:09:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-25 02:09:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-25 02:09:26,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:09:26,517 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] [2018-10-25 02:09:26,519 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:09:26,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:09:26,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1394704370, now seen corresponding path program 1 times [2018-10-25 02:09:26,529 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:09:26,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:26,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:09:26,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:26,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:09:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:09:27,088 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:09:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:09:27,207 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:09:27,207 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:09:27,207 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:09:27,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:09:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:09:27,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:09:27,234 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-25 02:09:47,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:09:47,728 INFO L93 Difference]: Finished difference Result 5042 states and 9509 transitions. [2018-10-25 02:09:47,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:09:47,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-10-25 02:09:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:09:47,778 INFO L225 Difference]: With dead ends: 5042 [2018-10-25 02:09:47,778 INFO L226 Difference]: Without dead ends: 3262 [2018-10-25 02:09:47,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:09:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2018-10-25 02:09:47,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 3214. [2018-10-25 02:09:47,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2018-10-25 02:09:47,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 5986 transitions. [2018-10-25 02:09:48,001 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 5986 transitions. Word has length 61 [2018-10-25 02:09:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:09:48,002 INFO L481 AbstractCegarLoop]: Abstraction has 3214 states and 5986 transitions. [2018-10-25 02:09:48,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:09:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 5986 transitions. [2018-10-25 02:09:48,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-25 02:09:48,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:09:48,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:09:48,018 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:09:48,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:09:48,019 INFO L82 PathProgramCache]: Analyzing trace with hash 236400336, now seen corresponding path program 1 times [2018-10-25 02:09:48,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:09:48,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:48,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:09:48,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:09:48,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:09:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:09:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:09:48,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:09:48,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:09:48,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:09:48,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:09:48,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:09:48,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:09:48,510 INFO L87 Difference]: Start difference. First operand 3214 states and 5986 transitions. Second operand 5 states. [2018-10-25 02:10:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:10:19,173 INFO L93 Difference]: Finished difference Result 9615 states and 17996 transitions. [2018-10-25 02:10:19,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:10:19,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-25 02:10:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:10:19,209 INFO L225 Difference]: With dead ends: 9615 [2018-10-25 02:10:19,209 INFO L226 Difference]: Without dead ends: 6407 [2018-10-25 02:10:19,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:10:19,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2018-10-25 02:10:19,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 6344. [2018-10-25 02:10:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6344 states. [2018-10-25 02:10:19,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6344 states to 6344 states and 10095 transitions. [2018-10-25 02:10:19,386 INFO L78 Accepts]: Start accepts. Automaton has 6344 states and 10095 transitions. Word has length 161 [2018-10-25 02:10:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:10:19,387 INFO L481 AbstractCegarLoop]: Abstraction has 6344 states and 10095 transitions. [2018-10-25 02:10:19,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:10:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6344 states and 10095 transitions. [2018-10-25 02:10:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-25 02:10:19,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:10:19,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:10:19,395 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:10:19,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:10:19,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2101705828, now seen corresponding path program 1 times [2018-10-25 02:10:19,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:10:19,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:19,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:10:19,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:19,401 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:10:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:10:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:10:19,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:10:19,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:10:19,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:10:19,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:10:19,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:10:19,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:10:19,854 INFO L87 Difference]: Start difference. First operand 6344 states and 10095 transitions. Second operand 6 states. [2018-10-25 02:10:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:10:41,412 INFO L93 Difference]: Finished difference Result 19050 states and 30629 transitions. [2018-10-25 02:10:41,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-25 02:10:41,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-10-25 02:10:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:10:41,474 INFO L225 Difference]: With dead ends: 19050 [2018-10-25 02:10:41,474 INFO L226 Difference]: Without dead ends: 12712 [2018-10-25 02:10:41,492 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:10:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12712 states. [2018-10-25 02:10:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12712 to 12478. [2018-10-25 02:10:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12478 states. [2018-10-25 02:10:41,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12478 states to 12478 states and 19009 transitions. [2018-10-25 02:10:41,808 INFO L78 Accepts]: Start accepts. Automaton has 12478 states and 19009 transitions. Word has length 171 [2018-10-25 02:10:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:10:41,808 INFO L481 AbstractCegarLoop]: Abstraction has 12478 states and 19009 transitions. [2018-10-25 02:10:41,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:10:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 12478 states and 19009 transitions. [2018-10-25 02:10:41,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-25 02:10:41,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:10:41,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:10:41,812 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:10:41,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:10:41,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1371790217, now seen corresponding path program 1 times [2018-10-25 02:10:41,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:10:41,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:41,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:10:41,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:10:41,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:10:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:10:42,149 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:10:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:10:42,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:10:42,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 02:10:42,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:10:42,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:10:42,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:10:42,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:10:42,540 INFO L87 Difference]: Start difference. First operand 12478 states and 19009 transitions. Second operand 6 states. [2018-10-25 02:11:08,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:11:08,555 INFO L93 Difference]: Finished difference Result 37172 states and 58237 transitions. [2018-10-25 02:11:08,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:11:08,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-10-25 02:11:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:11:08,651 INFO L225 Difference]: With dead ends: 37172 [2018-10-25 02:11:08,652 INFO L226 Difference]: Without dead ends: 24700 [2018-10-25 02:11:08,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:11:08,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24700 states. [2018-10-25 02:11:09,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24700 to 24292. [2018-10-25 02:11:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24292 states. [2018-10-25 02:11:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24292 states to 24292 states and 36594 transitions. [2018-10-25 02:11:09,287 INFO L78 Accepts]: Start accepts. Automaton has 24292 states and 36594 transitions. Word has length 226 [2018-10-25 02:11:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:11:09,288 INFO L481 AbstractCegarLoop]: Abstraction has 24292 states and 36594 transitions. [2018-10-25 02:11:09,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:11:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 24292 states and 36594 transitions. [2018-10-25 02:11:09,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-25 02:11:09,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:11:09,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:11:09,294 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:11:09,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:11:09,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1971346795, now seen corresponding path program 1 times [2018-10-25 02:11:09,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:11:09,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:11:09,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:11:09,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:11:09,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:11:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:11:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:11:10,401 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:11:10,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-25 02:11:10,401 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:11:10,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 02:11:10,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 02:11:10,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-25 02:11:10,403 INFO L87 Difference]: Start difference. First operand 24292 states and 36594 transitions. Second operand 7 states. [2018-10-25 02:11:59,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:11:59,252 INFO L93 Difference]: Finished difference Result 92038 states and 154784 transitions. [2018-10-25 02:11:59,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 02:11:59,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2018-10-25 02:11:59,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:11:59,546 INFO L225 Difference]: With dead ends: 92038 [2018-10-25 02:11:59,546 INFO L226 Difference]: Without dead ends: 67752 [2018-10-25 02:11:59,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 02:11:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67752 states. [2018-10-25 02:12:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67752 to 67059. [2018-10-25 02:12:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67059 states. [2018-10-25 02:12:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67059 states to 67059 states and 97272 transitions. [2018-10-25 02:12:01,384 INFO L78 Accepts]: Start accepts. Automaton has 67059 states and 97272 transitions. Word has length 278 [2018-10-25 02:12:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:12:01,385 INFO L481 AbstractCegarLoop]: Abstraction has 67059 states and 97272 transitions. [2018-10-25 02:12:01,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 02:12:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 67059 states and 97272 transitions. [2018-10-25 02:12:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-10-25 02:12:01,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:12:01,412 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:12:01,412 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:12:01,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:12:01,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1100069187, now seen corresponding path program 1 times [2018-10-25 02:12:01,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:12:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:01,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:12:01,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:12:01,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:12:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:12:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:12:02,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:12:02,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:12:02,788 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 766 with the following transitions: [2018-10-25 02:12:02,799 INFO L202 CegarAbsIntRunner]: [0], [1], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5093], [5226], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5614], [5616], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6432], [6437], [6439], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-10-25 02:12:02,910 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:12:02,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:12:04,195 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 02:12:04,197 INFO L272 AbstractInterpreter]: Visited 489 different actions 489 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-25 02:12:04,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:12:04,241 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 02:12:05,966 INFO L232 lantSequenceWeakener]: Weakened 751 states. On average, predicates are now at 75.23% of their original sizes. [2018-10-25 02:12:05,967 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 02:12:06,299 INFO L413 sIntCurrentIteration]: We have 764 unified AI predicates [2018-10-25 02:12:06,299 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 02:12:06,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:12:06,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-25 02:12:06,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:12:06,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 02:12:06,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 02:12:06,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:12:06,303 INFO L87 Difference]: Start difference. First operand 67059 states and 97272 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown