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/Problem11_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:29:58,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:29:58,360 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:29:58,375 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:29:58,375 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:29:58,376 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:29:58,377 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:29:58,379 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:29:58,381 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:29:58,382 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:29:58,383 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:29:58,383 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:29:58,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:29:58,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:29:58,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:29:58,387 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:29:58,388 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:29:58,390 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:29:58,392 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:29:58,393 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:29:58,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:29:58,396 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:29:58,401 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:29:58,401 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:29:58,402 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:29:58,403 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:29:58,404 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:29:58,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:29:58,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:29:58,409 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:29:58,413 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:29:58,413 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:29:58,418 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 01:29:58,449 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:29:58,449 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:29:58,450 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:29:58,451 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:29:58,453 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:29:58,453 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:29:58,453 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:29:58,454 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:29:58,454 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:29:58,454 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:29:58,454 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:29:58,454 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:29:58,455 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:29:58,455 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:29:58,456 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:29:58,457 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:29:58,457 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:29:58,457 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:29:58,457 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:29:58,458 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:29:58,459 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:29:58,459 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:29:58,459 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:29:58,460 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:29:58,460 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:29:58,460 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:29:58,460 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:29:58,460 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:29:58,461 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:29:58,461 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:29:58,461 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:29:58,461 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:29:58,461 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:29:58,461 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:29:58,462 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:29:58,462 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:29:58,534 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:29:58,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:29:58,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:29:58,553 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:29:58,554 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:29:58,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-10-25 01:29:58,617 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62a9b5128/031a7d44e9f94171aa69c300494b8365/FLAG50941930e [2018-10-25 01:29:59,223 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:29:59,224 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label25_true-unreach-call.c [2018-10-25 01:29:59,243 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62a9b5128/031a7d44e9f94171aa69c300494b8365/FLAG50941930e [2018-10-25 01:29:59,264 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/62a9b5128/031a7d44e9f94171aa69c300494b8365 [2018-10-25 01:29:59,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:29:59,277 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:29:59,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:29:59,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:29:59,282 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:29:59,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:29:59" (1/1) ... [2018-10-25 01:29:59,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b3e367d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:29:59, skipping insertion in model container [2018-10-25 01:29:59,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:29:59" (1/1) ... [2018-10-25 01:29:59,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:29:59,374 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:30:00,030 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:00,037 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:30:00,212 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:30:00,231 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:30:00,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00 WrapperNode [2018-10-25 01:30:00,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:30:00,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:00,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:30:00,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:30:00,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:30:00,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:30:00,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:30:00,551 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:30:00,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (1/1) ... [2018-10-25 01:30:00,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:30:00,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:30:00,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:30:00,698 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:30:00,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (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 01:30:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:30:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:30:00,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:30:00,768 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:30:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:30:00,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:30:00,768 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:30:00,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:30:05,122 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:30:05,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:05 BoogieIcfgContainer [2018-10-25 01:30:05,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:30:05,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:30:05,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:30:05,127 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:30:05,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:29:59" (1/3) ... [2018-10-25 01:30:05,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb3dcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:05, skipping insertion in model container [2018-10-25 01:30:05,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:30:00" (2/3) ... [2018-10-25 01:30:05,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb3dcad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:30:05, skipping insertion in model container [2018-10-25 01:30:05,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:30:05" (3/3) ... [2018-10-25 01:30:05,131 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label25_true-unreach-call.c [2018-10-25 01:30:05,140 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:30:05,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:30:05,170 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:30:05,214 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:30:05,214 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:30:05,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:30:05,215 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:30:05,215 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:30:05,215 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:30:05,215 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:30:05,215 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:30:05,251 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:30:05,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-25 01:30:05,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:05,260 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] [2018-10-25 01:30:05,263 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:05,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:05,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1384704100, now seen corresponding path program 1 times [2018-10-25 01:30:05,270 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:05,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:05,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:05,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:05,320 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:05,711 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 01:30:05,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:05,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:05,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:05,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:05,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:05,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:05,735 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:30:09,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:09,655 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-25 01:30:09,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:09,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-10-25 01:30:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:09,682 INFO L225 Difference]: With dead ends: 996 [2018-10-25 01:30:09,682 INFO L226 Difference]: Without dead ends: 697 [2018-10-25 01:30:09,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:09,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-25 01:30:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-25 01:30:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-25 01:30:09,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-25 01:30:09,785 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 38 [2018-10-25 01:30:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:09,785 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-25 01:30:09,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-25 01:30:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-25 01:30:09,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:09,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:09,793 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:09,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash -331878893, now seen corresponding path program 1 times [2018-10-25 01:30:09,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:09,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:09,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:09,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:09,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:10,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:10,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:30:10,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:10,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:10,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:10,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:10,165 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-25 01:30:14,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:14,107 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-25 01:30:14,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:30:14,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-25 01:30:14,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:14,123 INFO L225 Difference]: With dead ends: 1725 [2018-10-25 01:30:14,123 INFO L226 Difference]: Without dead ends: 1250 [2018-10-25 01:30:14,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:30:14,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-25 01:30:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-25 01:30:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-25 01:30:14,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-25 01:30:14,215 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 111 [2018-10-25 01:30:14,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:14,215 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-25 01:30:14,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:30:14,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-25 01:30:14,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-25 01:30:14,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:14,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:14,219 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:14,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:14,220 INFO L82 PathProgramCache]: Analyzing trace with hash -689587928, now seen corresponding path program 1 times [2018-10-25 01:30:14,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:14,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:14,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:14,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:14,222 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:14,458 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:14,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:14,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:30:14,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:14,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:30:14,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:30:14,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:14,461 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-10-25 01:30:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:17,257 INFO L93 Difference]: Finished difference Result 3240 states and 4918 transitions. [2018-10-25 01:30:17,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:30:17,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2018-10-25 01:30:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:17,274 INFO L225 Difference]: With dead ends: 3240 [2018-10-25 01:30:17,274 INFO L226 Difference]: Without dead ends: 2015 [2018-10-25 01:30:17,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:30:17,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2015 states. [2018-10-25 01:30:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2015 to 2000. [2018-10-25 01:30:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2000 states. [2018-10-25 01:30:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2897 transitions. [2018-10-25 01:30:17,345 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2897 transitions. Word has length 112 [2018-10-25 01:30:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:17,346 INFO L481 AbstractCegarLoop]: Abstraction has 2000 states and 2897 transitions. [2018-10-25 01:30:17,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:30:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2897 transitions. [2018-10-25 01:30:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-25 01:30:17,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:17,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:17,353 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:17,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:17,353 INFO L82 PathProgramCache]: Analyzing trace with hash -2107878529, now seen corresponding path program 1 times [2018-10-25 01:30:17,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:17,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:17,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:17,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:17,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:17,555 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:30:17,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:30:17,556 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:17,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:17,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:17,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:17,557 INFO L87 Difference]: Start difference. First operand 2000 states and 2897 transitions. Second operand 6 states. [2018-10-25 01:30:23,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:30:23,941 INFO L93 Difference]: Finished difference Result 7663 states and 13269 transitions. [2018-10-25 01:30:23,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:30:23,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-25 01:30:23,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:30:24,010 INFO L225 Difference]: With dead ends: 7663 [2018-10-25 01:30:24,011 INFO L226 Difference]: Without dead ends: 5669 [2018-10-25 01:30:24,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:30:24,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2018-10-25 01:30:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5142. [2018-10-25 01:30:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2018-10-25 01:30:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7307 transitions. [2018-10-25 01:30:24,364 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7307 transitions. Word has length 137 [2018-10-25 01:30:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:30:24,365 INFO L481 AbstractCegarLoop]: Abstraction has 5142 states and 7307 transitions. [2018-10-25 01:30:24,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:30:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7307 transitions. [2018-10-25 01:30:24,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-25 01:30:24,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:30:24,374 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:30:24,374 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:30:24,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:24,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1631754857, now seen corresponding path program 1 times [2018-10-25 01:30:24,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:30:24,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:24,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:30:24,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:30:24,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:30:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:30:24,680 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:30:24,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:30:24,681 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:30:24,682 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-25 01:30:24,684 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:30:24,740 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:30:24,740 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:30:25,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:30:25,176 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:30:25,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:30:25,218 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:30:25,793 INFO L232 lantSequenceWeakener]: Weakened 176 states. On average, predicates are now at 73.39% of their original sizes. [2018-10-25 01:30:25,793 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:30:25,853 INFO L413 sIntCurrentIteration]: We have 184 unified AI predicates [2018-10-25 01:30:25,854 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:30:25,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:30:25,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:30:25,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:30:25,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:30:25,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:30:25,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:30:25,857 INFO L87 Difference]: Start difference. First operand 5142 states and 7307 transitions. Second operand 6 states. [2018-10-25 01:31:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:24,149 INFO L93 Difference]: Finished difference Result 10470 states and 14826 transitions. [2018-10-25 01:31:24,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:31:24,149 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 185 [2018-10-25 01:31:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:24,185 INFO L225 Difference]: With dead ends: 10470 [2018-10-25 01:31:24,186 INFO L226 Difference]: Without dead ends: 5334 [2018-10-25 01:31:24,219 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 185 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:31:24,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5334 states. [2018-10-25 01:31:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5334 to 5332. [2018-10-25 01:31:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5332 states. [2018-10-25 01:31:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7507 transitions. [2018-10-25 01:31:24,397 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7507 transitions. Word has length 185 [2018-10-25 01:31:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:24,398 INFO L481 AbstractCegarLoop]: Abstraction has 5332 states and 7507 transitions. [2018-10-25 01:31:24,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:31:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7507 transitions. [2018-10-25 01:31:24,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-25 01:31:24,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:24,406 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:31:24,407 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:24,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:24,407 INFO L82 PathProgramCache]: Analyzing trace with hash -826417273, now seen corresponding path program 1 times [2018-10-25 01:31:24,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:24,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:24,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:24,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:24,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:24,963 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:24,963 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:24,964 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 243 with the following transitions: [2018-10-25 01:31:24,965 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:24,973 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:24,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:25,535 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:31:25,535 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:31:25,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:25,564 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:31:25,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:25,564 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:31:25,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:25,583 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:31:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:25,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:31:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:26,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:31:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:26,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:31:26,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:31:26,338 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:31:26,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:31:26,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:31:26,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:31:26,340 INFO L87 Difference]: Start difference. First operand 5332 states and 7507 transitions. Second operand 9 states. [2018-10-25 01:31:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:35,479 INFO L93 Difference]: Finished difference Result 14930 states and 27251 transitions. [2018-10-25 01:31:35,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-25 01:31:35,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 242 [2018-10-25 01:31:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:35,584 INFO L225 Difference]: With dead ends: 14930 [2018-10-25 01:31:35,584 INFO L226 Difference]: Without dead ends: 9794 [2018-10-25 01:31:35,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 487 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-10-25 01:31:35,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9794 states. [2018-10-25 01:31:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9794 to 9682. [2018-10-25 01:31:36,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9682 states. [2018-10-25 01:31:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9682 states to 9682 states and 16280 transitions. [2018-10-25 01:31:36,490 INFO L78 Accepts]: Start accepts. Automaton has 9682 states and 16280 transitions. Word has length 242 [2018-10-25 01:31:36,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:36,491 INFO L481 AbstractCegarLoop]: Abstraction has 9682 states and 16280 transitions. [2018-10-25 01:31:36,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:31:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 9682 states and 16280 transitions. [2018-10-25 01:31:36,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-25 01:31:36,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:36,502 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:31:36,502 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:36,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:36,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1119037538, now seen corresponding path program 1 times [2018-10-25 01:31:36,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:36,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:36,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:36,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:36,504 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:31:37,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:37,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:37,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 251 with the following transitions: [2018-10-25 01:31:37,161 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:37,165 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:37,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:38,558 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:31:38,559 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:31:38,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:38,567 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:31:38,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:38,567 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:31:38,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:38,576 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:31:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:38,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:31:39,104 WARN L179 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2018-10-25 01:31:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:31:39,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:31:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-25 01:31:40,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:31:40,199 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 01:31:40,199 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:40,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:31:40,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:31:40,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:31:40,201 INFO L87 Difference]: Start difference. First operand 9682 states and 16280 transitions. Second operand 6 states. [2018-10-25 01:31:44,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:44,702 INFO L93 Difference]: Finished difference Result 25236 states and 45636 transitions. [2018-10-25 01:31:44,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:31:44,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-10-25 01:31:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:44,841 INFO L225 Difference]: With dead ends: 25236 [2018-10-25 01:31:44,841 INFO L226 Difference]: Without dead ends: 15750 [2018-10-25 01:31:44,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 495 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:31:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15750 states. [2018-10-25 01:31:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15750 to 15748. [2018-10-25 01:31:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15748 states. [2018-10-25 01:31:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15748 states to 15748 states and 27353 transitions. [2018-10-25 01:31:45,734 INFO L78 Accepts]: Start accepts. Automaton has 15748 states and 27353 transitions. Word has length 250 [2018-10-25 01:31:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:45,735 INFO L481 AbstractCegarLoop]: Abstraction has 15748 states and 27353 transitions. [2018-10-25 01:31:45,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:31:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 15748 states and 27353 transitions. [2018-10-25 01:31:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-25 01:31:45,748 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:45,749 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:31:45,749 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:45,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:45,749 INFO L82 PathProgramCache]: Analyzing trace with hash -198818813, now seen corresponding path program 1 times [2018-10-25 01:31:45,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:45,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:45,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:45,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:45,751 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-25 01:31:47,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:47,026 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:47,027 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-25 01:31:47,027 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:47,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:47,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:47,942 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:31:47,942 INFO L272 AbstractInterpreter]: Visited 141 different actions 560 times. Merged at 7 different actions 30 times. Widened at 1 different actions 3 times. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:31:47,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:47,951 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:31:47,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:47,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:31:47,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:47,960 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:31:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:48,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:31:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:48,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:31:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:31:48,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:31:48,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-25 01:31:48,490 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:31:48,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 01:31:48,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 01:31:48,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:31:48,492 INFO L87 Difference]: Start difference. First operand 15748 states and 27353 transitions. Second operand 11 states. [2018-10-25 01:31:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:31:53,946 INFO L93 Difference]: Finished difference Result 42484 states and 84954 transitions. [2018-10-25 01:31:53,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:31:53,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2018-10-25 01:31:53,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:31:54,241 INFO L225 Difference]: With dead ends: 42484 [2018-10-25 01:31:54,241 INFO L226 Difference]: Without dead ends: 26452 [2018-10-25 01:31:54,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 522 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-10-25 01:31:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26452 states. [2018-10-25 01:31:55,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26452 to 26431. [2018-10-25 01:31:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26431 states. [2018-10-25 01:31:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26431 states to 26431 states and 42275 transitions. [2018-10-25 01:31:55,670 INFO L78 Accepts]: Start accepts. Automaton has 26431 states and 42275 transitions. Word has length 260 [2018-10-25 01:31:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:31:55,671 INFO L481 AbstractCegarLoop]: Abstraction has 26431 states and 42275 transitions. [2018-10-25 01:31:55,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-25 01:31:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 26431 states and 42275 transitions. [2018-10-25 01:31:55,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-10-25 01:31:55,707 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:31:55,707 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:55,708 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:31:55,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:55,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2030082556, now seen corresponding path program 1 times [2018-10-25 01:31:55,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:31:55,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:55,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:55,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:31:55,709 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:31:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-25 01:31:56,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:56,211 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:31:56,211 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-10-25 01:31:56,212 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:31:56,216 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:31:56,216 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:31:57,890 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:31:57,890 INFO L272 AbstractInterpreter]: Visited 142 different actions 567 times. Merged at 8 different actions 33 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 4 different actions. Largest state had 28 variables. [2018-10-25 01:31:57,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:31:57,895 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:31:57,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:31:57,895 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:31:57,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:31:57,903 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:31:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:31:58,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:31:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-25 01:31:58,144 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:31:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2018-10-25 01:31:58,235 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:31:58,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-10-25 01:31:58,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:31:58,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:31:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:31:58,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:31:58,237 INFO L87 Difference]: Start difference. First operand 26431 states and 42275 transitions. Second operand 3 states. [2018-10-25 01:32:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:00,523 INFO L93 Difference]: Finished difference Result 61246 states and 105648 transitions. [2018-10-25 01:32:00,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:32:00,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 317 [2018-10-25 01:32:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:00,832 INFO L225 Difference]: With dead ends: 61246 [2018-10-25 01:32:00,832 INFO L226 Difference]: Without dead ends: 35010 [2018-10-25 01:32:01,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 639 GetRequests, 633 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:32:01,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35010 states. [2018-10-25 01:32:02,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35010 to 34805. [2018-10-25 01:32:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34805 states. [2018-10-25 01:32:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34805 states to 34805 states and 55023 transitions. [2018-10-25 01:32:02,677 INFO L78 Accepts]: Start accepts. Automaton has 34805 states and 55023 transitions. Word has length 317 [2018-10-25 01:32:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:02,678 INFO L481 AbstractCegarLoop]: Abstraction has 34805 states and 55023 transitions. [2018-10-25 01:32:02,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:32:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 34805 states and 55023 transitions. [2018-10-25 01:32:02,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-25 01:32:02,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:02,723 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:32:02,723 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:02,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:02,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1090686184, now seen corresponding path program 1 times [2018-10-25 01:32:02,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:02,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:02,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:02,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:02,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2018-10-25 01:32:03,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:32:03,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:32:03,625 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:32:03,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:32:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:32:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:32:03,626 INFO L87 Difference]: Start difference. First operand 34805 states and 55023 transitions. Second operand 4 states. [2018-10-25 01:32:07,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:07,118 INFO L93 Difference]: Finished difference Result 78667 states and 137857 transitions. [2018-10-25 01:32:07,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:32:07,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-10-25 01:32:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:07,465 INFO L225 Difference]: With dead ends: 78667 [2018-10-25 01:32:07,465 INFO L226 Difference]: Without dead ends: 44057 [2018-10-25 01:32:07,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:32:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44057 states. [2018-10-25 01:32:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44057 to 43853. [2018-10-25 01:32:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43853 states. [2018-10-25 01:32:09,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43853 states to 43853 states and 69710 transitions. [2018-10-25 01:32:09,667 INFO L78 Accepts]: Start accepts. Automaton has 43853 states and 69710 transitions. Word has length 347 [2018-10-25 01:32:09,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:09,668 INFO L481 AbstractCegarLoop]: Abstraction has 43853 states and 69710 transitions. [2018-10-25 01:32:09,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:32:09,668 INFO L276 IsEmpty]: Start isEmpty. Operand 43853 states and 69710 transitions. [2018-10-25 01:32:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-25 01:32:09,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:09,738 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:32:09,739 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:09,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:09,739 INFO L82 PathProgramCache]: Analyzing trace with hash 38563041, now seen corresponding path program 1 times [2018-10-25 01:32:09,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:09,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:09,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:09,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:09,741 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 01:32:11,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:11,268 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:11,268 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-10-25 01:32:11,269 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:11,272 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:11,272 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:32:12,727 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:32:12,727 INFO L272 AbstractInterpreter]: Visited 187 different actions 919 times. Merged at 7 different actions 31 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:32:12,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:12,733 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:32:12,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:12,733 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:32:12,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:12,744 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:32:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:12,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:32:14,288 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-25 01:32:14,457 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 58 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-10-25 01:32:14,458 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:32:15,081 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-10-25 01:32:15,090 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,158 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,264 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,449 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,555 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,595 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,655 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,707 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,801 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,841 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:15,987 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,086 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,125 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,169 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,521 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,570 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,609 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,649 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,688 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,767 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,857 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,899 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:16,971 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,026 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,075 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,113 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,153 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,221 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,270 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,591 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,826 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,867 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,944 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:17,999 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,134 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,175 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,291 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,332 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,430 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,468 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,505 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,543 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,579 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,619 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,658 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,696 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,779 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,819 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,871 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,951 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:18,989 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,028 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,073 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,111 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,149 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,187 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,226 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,384 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,424 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,462 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,503 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,541 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,697 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,779 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,817 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,856 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,894 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:19,981 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,020 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,097 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,136 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,175 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,257 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,294 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,333 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:20,723 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,032 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,071 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,108 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,146 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,184 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,282 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,356 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,392 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,430 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,467 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,549 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,588 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:21,941 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,166 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,238 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,315 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,644 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,691 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,749 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,786 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,821 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,859 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,900 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,938 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:22,977 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,014 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,052 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,089 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,209 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,251 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,289 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,325 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,470 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,581 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,620 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,657 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,810 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,846 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,884 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,921 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,960 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:23,999 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,036 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,110 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,150 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,221 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,258 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,296 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,332 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,369 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,405 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,443 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,490 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,525 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,563 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,602 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,699 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:24,736 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:32:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 65 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:32:26,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:32:26,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2018-10-25 01:32:26,671 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:32:26,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:32:26,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:32:26,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2018-10-25 01:32:26,672 INFO L87 Difference]: Start difference. First operand 43853 states and 69710 transitions. Second operand 16 states. [2018-10-25 01:32:31,600 WARN L179 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-25 01:32:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:32:49,363 INFO L93 Difference]: Finished difference Result 132171 states and 244441 transitions. [2018-10-25 01:32:49,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-25 01:32:49,363 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 346 [2018-10-25 01:32:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:32:50,484 INFO L225 Difference]: With dead ends: 132171 [2018-10-25 01:32:50,484 INFO L226 Difference]: Without dead ends: 88513 [2018-10-25 01:32:50,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 516 SyntacticMatches, 168 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=743, Invalid=2119, Unknown=0, NotChecked=0, Total=2862 [2018-10-25 01:32:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88513 states. [2018-10-25 01:32:54,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88513 to 82766. [2018-10-25 01:32:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82766 states. [2018-10-25 01:32:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82766 states to 82766 states and 126099 transitions. [2018-10-25 01:32:54,820 INFO L78 Accepts]: Start accepts. Automaton has 82766 states and 126099 transitions. Word has length 346 [2018-10-25 01:32:54,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:32:54,821 INFO L481 AbstractCegarLoop]: Abstraction has 82766 states and 126099 transitions. [2018-10-25 01:32:54,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:32:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 82766 states and 126099 transitions. [2018-10-25 01:32:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-10-25 01:32:54,982 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:32:54,982 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 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] [2018-10-25 01:32:54,983 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:32:54,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:32:54,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1541558226, now seen corresponding path program 1 times [2018-10-25 01:32:54,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:32:54,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:54,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:32:54,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:32:54,985 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:32:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:32:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 351 proven. 94 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-25 01:32:55,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:32:55,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:32:55,789 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-10-25 01:32:55,789 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:32:55,792 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:32:55,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:05,110 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:05,110 INFO L272 AbstractInterpreter]: Visited 142 different actions 710 times. Merged at 8 different actions 45 times. Widened at 1 different actions 3 times. Found 9 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:33:05,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:05,119 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:05,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:05,119 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:05,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:05,128 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:05,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 594 proven. 2 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2018-10-25 01:33:05,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 351 proven. 94 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-25 01:33:05,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:05,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-10-25 01:33:05,662 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:05,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:33:05,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:33:05,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:33:05,663 INFO L87 Difference]: Start difference. First operand 82766 states and 126099 transitions. Second operand 6 states. [2018-10-25 01:33:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:09,578 INFO L93 Difference]: Finished difference Result 150916 states and 232206 transitions. [2018-10-25 01:33:09,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:33:09,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 481 [2018-10-25 01:33:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:09,979 INFO L225 Difference]: With dead ends: 150916 [2018-10-25 01:33:09,980 INFO L226 Difference]: Without dead ends: 72078 [2018-10-25 01:33:10,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 973 GetRequests, 963 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:33:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72078 states. [2018-10-25 01:33:12,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72078 to 71294. [2018-10-25 01:33:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71294 states. [2018-10-25 01:33:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71294 states to 71294 states and 102643 transitions. [2018-10-25 01:33:12,561 INFO L78 Accepts]: Start accepts. Automaton has 71294 states and 102643 transitions. Word has length 481 [2018-10-25 01:33:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:12,562 INFO L481 AbstractCegarLoop]: Abstraction has 71294 states and 102643 transitions. [2018-10-25 01:33:12,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:33:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 71294 states and 102643 transitions. [2018-10-25 01:33:12,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2018-10-25 01:33:12,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:12,685 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-25 01:33:12,685 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:12,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:12,685 INFO L82 PathProgramCache]: Analyzing trace with hash -108764721, now seen corresponding path program 1 times [2018-10-25 01:33:12,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:12,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:12,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:12,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:12,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-25 01:33:13,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:13,113 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:13,114 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 486 with the following transitions: [2018-10-25 01:33:13,114 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [618], [623], [625], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [784], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:13,117 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:13,117 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:14,769 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:14,770 INFO L272 AbstractInterpreter]: Visited 143 different actions 575 times. Merged at 8 different actions 38 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 5 different actions. Largest state had 28 variables. [2018-10-25 01:33:14,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:14,777 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:14,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:14,777 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:14,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:14,785 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:14,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-10-25 01:33:15,065 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 337 proven. 94 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-10-25 01:33:15,324 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:33:15,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:33:15,325 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:33:15,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:33:15,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:33:15,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:33:15,326 INFO L87 Difference]: Start difference. First operand 71294 states and 102643 transitions. Second operand 9 states. [2018-10-25 01:33:19,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:19,745 INFO L93 Difference]: Finished difference Result 141576 states and 197489 transitions. [2018-10-25 01:33:19,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:33:19,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 485 [2018-10-25 01:33:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:19,981 INFO L225 Difference]: With dead ends: 141576 [2018-10-25 01:33:19,981 INFO L226 Difference]: Without dead ends: 66503 [2018-10-25 01:33:20,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 972 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-10-25 01:33:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66503 states. [2018-10-25 01:33:21,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66503 to 62907. [2018-10-25 01:33:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62907 states. [2018-10-25 01:33:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62907 states to 62907 states and 75796 transitions. [2018-10-25 01:33:21,920 INFO L78 Accepts]: Start accepts. Automaton has 62907 states and 75796 transitions. Word has length 485 [2018-10-25 01:33:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:21,920 INFO L481 AbstractCegarLoop]: Abstraction has 62907 states and 75796 transitions. [2018-10-25 01:33:21,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:33:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 62907 states and 75796 transitions. [2018-10-25 01:33:21,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-25 01:33:21,988 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:21,988 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:21,988 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:21,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:21,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1013416520, now seen corresponding path program 1 times [2018-10-25 01:33:21,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:21,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:21,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:21,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:21,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 136 proven. 280 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2018-10-25 01:33:22,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:22,582 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:33:22,583 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 495 with the following transitions: [2018-10-25 01:33:22,583 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], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [570], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [971], [975], [979], [983], [987], [991], [994], [999], [1001], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:33:22,587 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:33:22,587 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:33:25,045 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:33:25,045 INFO L272 AbstractInterpreter]: Visited 187 different actions 746 times. Merged at 9 different actions 39 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:33:25,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:25,053 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:33:25,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:33:25,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:25,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:25,062 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:33:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:25,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:33:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 641 backedges. 381 proven. 29 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2018-10-25 01:33:25,698 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:33:25,908 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:25,944 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,107 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,138 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,237 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,333 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:26,395 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:28,966 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,004 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,037 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,068 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,101 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,135 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,167 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,198 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,229 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,261 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,295 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,326 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,393 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,425 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,456 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,487 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,519 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,550 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,616 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,647 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,680 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,713 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,744 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,776 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,808 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,839 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:29,908 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,115 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,153 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,184 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,216 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,247 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,284 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,319 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,351 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,402 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,533 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,564 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,596 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,628 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,661 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,696 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,781 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,815 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,881 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,912 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,945 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:30,978 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,011 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,045 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,077 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,108 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,171 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,202 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,235 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,333 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,365 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,397 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,516 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,547 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,579 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,612 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,643 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,674 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,705 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,746 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,786 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,817 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,850 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,882 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,914 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:31,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,019 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,092 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,126 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,223 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,265 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,344 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,379 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,414 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,446 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,480 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,514 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,545 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,577 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,609 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,639 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,671 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,702 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,742 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,773 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,890 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,922 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,955 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:32,986 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,018 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,051 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,084 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,118 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,152 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,182 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,214 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,246 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,278 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,310 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,375 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-25 01:33:33,428 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 Received shutdown request... [2018-10-25 01:33:33,462 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:33:33,663 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:33:33,664 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:33:33,669 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:33:33,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:33:33 BoogieIcfgContainer [2018-10-25 01:33:33,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:33:33,670 INFO L168 Benchmark]: Toolchain (without parser) took 214394.05 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 897.6 MB. Max. memory is 7.1 GB. [2018-10-25 01:33:33,671 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:33:33,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 954.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:33:33,673 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -795.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:33:33,673 INFO L168 Benchmark]: Boogie Preprocessor took 146.62 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:33:33,674 INFO L168 Benchmark]: RCFGBuilder took 4425.08 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 185.4 MB). Peak memory consumption was 185.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:33:33,675 INFO L168 Benchmark]: TraceAbstraction took 208545.83 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 736.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:33:33,679 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 954.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 317.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 707.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -795.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.62 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4425.08 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 185.4 MB). Peak memory consumption was 185.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208545.83 ms. Allocated memory was 2.2 GB in the beginning and 4.6 GB in the end (delta: 2.4 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 736.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while BasicCegarLoop was analyzing trace of length 495 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 137.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2849 SDtfs, 17582 SDslu, 3720 SDs, 0 SdLazy, 32047 SolverSat, 6365 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 100.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5123 GetRequests, 4782 SyntacticMatches, 188 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2610 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82766occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.0s AbstIntTime, 9 AbstIntIterations, 1 AbstIntStrong, 0.9974240523968786 AbsIntWeakeningRatio, 0.15217391304347827 AbsIntAvgWeakeningVarsNumRemoved, 18.081521739130434 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 11450 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 5692 NumberOfCodeBlocks, 5692 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 8046 ConstructedInterpolants, 314 QuantifiedInterpolants, 14214269 SizeOfPredicates, 10 NumberOfNonLiveVariables, 4051 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 27 InterpolantComputations, 8 PerfectInterpolantSequences, 6985/7769 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown