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/Problem14_label05_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:02:44,414 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:02:44,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:02:44,432 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:02:44,432 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:02:44,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:02:44,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:02:44,437 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:02:44,438 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:02:44,439 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:02:44,440 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:02:44,440 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:02:44,441 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:02:44,442 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:02:44,444 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:02:44,444 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:02:44,445 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:02:44,447 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:02:44,449 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:02:44,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:02:44,452 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:02:44,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:02:44,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:02:44,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:02:44,456 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:02:44,457 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:02:44,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:02:44,459 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:02:44,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:02:44,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:02:44,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:02:44,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:02:44,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:02:44,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:02:44,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:02:44,464 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:02:44,464 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 [2018-10-27 08:02:44,480 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:02:44,480 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:02:44,481 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:02:44,481 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:02:44,482 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:02:44,482 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:02:44,482 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:02:44,482 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:02:44,482 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:02:44,483 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:02:44,483 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:02:44,483 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:02:44,483 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:02:44,483 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:02:44,486 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:02:44,487 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:02:44,488 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:02:44,489 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:02:44,489 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:02:44,489 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:02:44,489 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:02:44,489 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:02:44,490 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:02:44,490 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:02:44,490 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:02:44,490 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:02:44,490 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:02:44,491 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:02:44,491 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:02:44,491 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:02:44,491 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:02:44,491 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:02:44,491 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:02:44,492 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:02:44,492 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:02:44,492 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:02:44,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:02:44,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:02:44,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:02:44,579 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:02:44,580 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:02:44,580 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label05_true-unreach-call_false-termination.c [2018-10-27 08:02:44,645 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0600fc62f/af9e5c1f30eb455e8adae3573de05674/FLAG2462d91a2 [2018-10-27 08:02:45,243 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:02:45,244 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label05_true-unreach-call_false-termination.c [2018-10-27 08:02:45,257 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0600fc62f/af9e5c1f30eb455e8adae3573de05674/FLAG2462d91a2 [2018-10-27 08:02:45,273 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0600fc62f/af9e5c1f30eb455e8adae3573de05674 [2018-10-27 08:02:45,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:02:45,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:02:45,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:02:45,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:02:45,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:02:45,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:02:45" (1/1) ... [2018-10-27 08:02:45,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180ddc52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:45, skipping insertion in model container [2018-10-27 08:02:45,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:02:45" (1/1) ... [2018-10-27 08:02:45,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:02:45,373 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:02:45,849 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:02:45,854 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:02:46,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:02:46,044 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:02:46,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46 WrapperNode [2018-10-27 08:02:46,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:02:46,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:02:46,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:02:46,046 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:02:46,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:02:46,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:02:46,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:02:46,278 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:02:46,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... [2018-10-27 08:02:46,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:02:46,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:02:46,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:02:46,396 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:02:46,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:02:46,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:02:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:02:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:02:46,469 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:02:46,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:02:46,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:02:46,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:02:46,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:02:50,120 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:02:50,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:02:50 BoogieIcfgContainer [2018-10-27 08:02:50,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:02:50,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:02:50,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:02:50,128 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:02:50,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:02:45" (1/3) ... [2018-10-27 08:02:50,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f56f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:02:50, skipping insertion in model container [2018-10-27 08:02:50,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:02:46" (2/3) ... [2018-10-27 08:02:50,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f56f5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:02:50, skipping insertion in model container [2018-10-27 08:02:50,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:02:50" (3/3) ... [2018-10-27 08:02:50,133 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label05_true-unreach-call_false-termination.c [2018-10-27 08:02:50,142 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:02:50,151 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:02:50,169 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:02:50,225 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:02:50,225 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:02:50,225 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:02:50,225 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:02:50,226 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:02:50,226 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:02:50,226 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:02:50,226 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:02:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-27 08:02:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-27 08:02:50,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:02:50,265 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:02:50,267 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:02:50,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:02:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash 638958820, now seen corresponding path program 1 times [2018-10-27 08:02:50,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:02:50,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:50,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:02:50,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:50,324 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:02:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:02:50,807 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:02:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:02:50,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:02:50,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:02:50,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:02:50,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:02:50,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:02:50,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:02:50,873 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-27 08:02:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:02:52,629 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-27 08:02:52,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:02:52,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-27 08:02:52,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:02:52,658 INFO L225 Difference]: With dead ends: 691 [2018-10-27 08:02:52,659 INFO L226 Difference]: Without dead ends: 434 [2018-10-27 08:02:52,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:02:52,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-27 08:02:52,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-27 08:02:52,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-27 08:02:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-27 08:02:52,771 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 70 [2018-10-27 08:02:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:02:52,772 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-27 08:02:52,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:02:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-27 08:02:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 08:02:52,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:02:52,783 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:02:52,784 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:02:52,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:02:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash 781618536, now seen corresponding path program 1 times [2018-10-27 08:02:52,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:02:52,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:52,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:02:52,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:52,787 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:02:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:02:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:02:53,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:02:53,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:02:53,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:02:53,177 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:02:53,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:02:53,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:02:53,178 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-27 08:02:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:02:57,434 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-27 08:02:57,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:02:57,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-27 08:02:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:02:57,448 INFO L225 Difference]: With dead ends: 1588 [2018-10-27 08:02:57,448 INFO L226 Difference]: Without dead ends: 1160 [2018-10-27 08:02:57,454 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 [2018-10-27 08:02:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-27 08:02:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-27 08:02:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-27 08:02:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-27 08:02:57,524 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 140 [2018-10-27 08:02:57,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:02:57,524 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-27 08:02:57,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:02:57,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-27 08:02:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-27 08:02:57,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:02:57,529 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:02:57,530 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:02:57,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:02:57,530 INFO L82 PathProgramCache]: Analyzing trace with hash 386881263, now seen corresponding path program 1 times [2018-10-27 08:02:57,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:02:57,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:57,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:02:57,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:02:57,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:02:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:02:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:02:57,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:02:57,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:02:57,748 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:02:57,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:02:57,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:02:57,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:02:57,749 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-27 08:03:00,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:00,429 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-27 08:03:00,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:03:00,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-27 08:03:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:00,450 INFO L225 Difference]: With dead ends: 2716 [2018-10-27 08:03:00,450 INFO L226 Difference]: Without dead ends: 1569 [2018-10-27 08:03:00,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:03:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-27 08:03:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-27 08:03:00,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-27 08:03:00,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-27 08:03:00,528 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 141 [2018-10-27 08:03:00,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:00,528 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-27 08:03:00,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:03:00,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-27 08:03:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-27 08:03:00,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:00,533 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:03:00,533 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:00,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:00,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1814928629, now seen corresponding path program 1 times [2018-10-27 08:03:00,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:00,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:00,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:00,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:00,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:03:00,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:03:00,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:03:00,741 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:00,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:03:00,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:03:00,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:03:00,742 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-27 08:03:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:03,115 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-27 08:03:03,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:03:03,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-27 08:03:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:03,141 INFO L225 Difference]: With dead ends: 4906 [2018-10-27 08:03:03,141 INFO L226 Difference]: Without dead ends: 3374 [2018-10-27 08:03:03,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:03:03,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-27 08:03:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-27 08:03:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-27 08:03:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-27 08:03:03,263 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 143 [2018-10-27 08:03:03,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:03,264 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-27 08:03:03,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:03:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-27 08:03:03,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-27 08:03:03,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:03,272 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-27 08:03:03,272 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:03,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -294094552, now seen corresponding path program 1 times [2018-10-27 08:03:03,273 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:03,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:03,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:03,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-27 08:03:03,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:03:03,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:03:03,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:03,604 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:03:03,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:03:03,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:03:03,605 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 4 states. [2018-10-27 08:03:06,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:06,950 INFO L93 Difference]: Finished difference Result 8771 states and 12434 transitions. [2018-10-27 08:03:06,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:03:06,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 228 [2018-10-27 08:03:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:06,989 INFO L225 Difference]: With dead ends: 8771 [2018-10-27 08:03:06,989 INFO L226 Difference]: Without dead ends: 5514 [2018-10-27 08:03:07,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:03:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2018-10-27 08:03:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5512. [2018-10-27 08:03:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5512 states. [2018-10-27 08:03:07,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5512 states to 5512 states and 7392 transitions. [2018-10-27 08:03:07,177 INFO L78 Accepts]: Start accepts. Automaton has 5512 states and 7392 transitions. Word has length 228 [2018-10-27 08:03:07,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:07,177 INFO L481 AbstractCegarLoop]: Abstraction has 5512 states and 7392 transitions. [2018-10-27 08:03:07,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:03:07,178 INFO L276 IsEmpty]: Start isEmpty. Operand 5512 states and 7392 transitions. [2018-10-27 08:03:07,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-27 08:03:07,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:07,209 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:03:07,209 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:07,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash 2115072535, now seen corresponding path program 1 times [2018-10-27 08:03:07,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:07,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:07,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:07,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:07,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:07,686 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-27 08:03:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 126 proven. 108 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:03:07,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:03:07,887 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:03:07,888 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-27 08:03:07,891 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:03:07,975 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:03:07,976 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:03:12,042 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:03:12,045 INFO L272 AbstractInterpreter]: Visited 159 different actions 159 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:03:12,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:12,093 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:03:15,887 INFO L227 lantSequenceWeakener]: Weakened 328 states. On average, predicates are now at 78.02% of their original sizes. [2018-10-27 08:03:15,887 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:03:16,153 INFO L415 sIntCurrentIteration]: We unified 336 AI predicates to 336 [2018-10-27 08:03:16,153 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:03:16,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:03:16,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 08:03:16,156 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:16,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:03:16,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:03:16,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:03:16,157 INFO L87 Difference]: Start difference. First operand 5512 states and 7392 transitions. Second operand 6 states. [2018-10-27 08:03:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:03:41,780 INFO L93 Difference]: Finished difference Result 11018 states and 14781 transitions. [2018-10-27 08:03:41,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:03:41,781 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 337 [2018-10-27 08:03:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:03:41,809 INFO L225 Difference]: With dead ends: 11018 [2018-10-27 08:03:41,809 INFO L226 Difference]: Without dead ends: 5512 [2018-10-27 08:03:41,839 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 337 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 08:03:41,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2018-10-27 08:03:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 5510. [2018-10-27 08:03:41,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5510 states. [2018-10-27 08:03:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 7355 transitions. [2018-10-27 08:03:41,981 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 7355 transitions. Word has length 337 [2018-10-27 08:03:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:03:41,981 INFO L481 AbstractCegarLoop]: Abstraction has 5510 states and 7355 transitions. [2018-10-27 08:03:41,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:03:41,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 7355 transitions. [2018-10-27 08:03:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-27 08:03:42,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:03:42,014 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:03:42,015 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:03:42,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:42,015 INFO L82 PathProgramCache]: Analyzing trace with hash 65139688, now seen corresponding path program 1 times [2018-10-27 08:03:42,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:03:42,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:42,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:03:42,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:03:42,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:03:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:03:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 277 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 08:03:43,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:03:43,132 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:03:43,132 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 423 with the following transitions: [2018-10-27 08:03:43,133 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:03:43,143 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:03:43,143 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:03:47,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:03:47,196 INFO L272 AbstractInterpreter]: Visited 163 different actions 319 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:03:47,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:03:47,205 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:03:49,446 INFO L227 lantSequenceWeakener]: Weakened 419 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-27 08:03:49,446 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:03:49,794 INFO L415 sIntCurrentIteration]: We unified 421 AI predicates to 421 [2018-10-27 08:03:49,795 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:03:49,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:03:49,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-10-27 08:03:49,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:03:49,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:03:49,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:03:49,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:03:49,797 INFO L87 Difference]: Start difference. First operand 5510 states and 7355 transitions. Second operand 10 states. [2018-10-27 08:05:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:05:03,255 INFO L93 Difference]: Finished difference Result 11576 states and 15364 transitions. [2018-10-27 08:05:03,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-27 08:05:03,255 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 422 [2018-10-27 08:05:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:05:03,282 INFO L225 Difference]: With dead ends: 11576 [2018-10-27 08:05:03,283 INFO L226 Difference]: Without dead ends: 5885 [2018-10-27 08:05:03,310 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 430 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-10-27 08:05:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5885 states. [2018-10-27 08:05:03,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5885 to 5883. [2018-10-27 08:05:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5883 states. [2018-10-27 08:05:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 7751 transitions. [2018-10-27 08:05:03,443 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 7751 transitions. Word has length 422 [2018-10-27 08:05:03,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:05:03,444 INFO L481 AbstractCegarLoop]: Abstraction has 5883 states and 7751 transitions. [2018-10-27 08:05:03,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:05:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 7751 transitions. [2018-10-27 08:05:03,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-10-27 08:05:03,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:05:03,478 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, 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, 5, 5, 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, 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] [2018-10-27 08:05:03,479 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:05:03,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:03,479 INFO L82 PathProgramCache]: Analyzing trace with hash 32605696, now seen corresponding path program 1 times [2018-10-27 08:05:03,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:05:03,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:03,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:05:03,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:03,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:05:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:05:03,966 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:05:04,518 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 08:05:04,793 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-10-27 08:05:05,238 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 450 proven. 250 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:05:05,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:05:05,239 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:05:05,239 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 523 with the following transitions: [2018-10-27 08:05:05,240 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [507], [510], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:05:05,245 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:05:05,245 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:05:09,412 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:05:09,413 INFO L272 AbstractInterpreter]: Visited 164 different actions 322 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:05:09,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:09,452 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:05:11,868 INFO L227 lantSequenceWeakener]: Weakened 519 states. On average, predicates are now at 77.82% of their original sizes. [2018-10-27 08:05:11,868 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:05:11,946 INFO L415 sIntCurrentIteration]: We unified 521 AI predicates to 521 [2018-10-27 08:05:11,947 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:05:11,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:05:11,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-10-27 08:05:11,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:05:11,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 08:05:11,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 08:05:11,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 08:05:11,949 INFO L87 Difference]: Start difference. First operand 5883 states and 7751 transitions. Second operand 10 states. [2018-10-27 08:05:20,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:05:20,915 INFO L93 Difference]: Finished difference Result 11392 states and 15116 transitions. [2018-10-27 08:05:20,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:05:20,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 522 [2018-10-27 08:05:20,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:05:20,938 INFO L225 Difference]: With dead ends: 11392 [2018-10-27 08:05:20,938 INFO L226 Difference]: Without dead ends: 5698 [2018-10-27 08:05:20,951 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 529 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-10-27 08:05:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5698 states. [2018-10-27 08:05:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5698 to 5695. [2018-10-27 08:05:21,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5695 states. [2018-10-27 08:05:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 7535 transitions. [2018-10-27 08:05:21,070 INFO L78 Accepts]: Start accepts. Automaton has 5695 states and 7535 transitions. Word has length 522 [2018-10-27 08:05:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:05:21,070 INFO L481 AbstractCegarLoop]: Abstraction has 5695 states and 7535 transitions. [2018-10-27 08:05:21,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 08:05:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5695 states and 7535 transitions. [2018-10-27 08:05:21,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-10-27 08:05:21,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:05:21,110 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, 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, 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, 3, 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] [2018-10-27 08:05:21,110 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:05:21,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:21,111 INFO L82 PathProgramCache]: Analyzing trace with hash 20863496, now seen corresponding path program 1 times [2018-10-27 08:05:21,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:05:21,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:21,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:05:21,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:05:21,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:05:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:05:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 484 proven. 112 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 08:05:22,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:05:22,068 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:05:22,068 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 559 with the following transitions: [2018-10-27 08:05:22,069 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:05:22,073 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:05:22,073 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:05:31,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:05:31,272 INFO L272 AbstractInterpreter]: Visited 164 different actions 491 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:05:31,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:05:31,279 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:05:32,857 INFO L227 lantSequenceWeakener]: Weakened 555 states. On average, predicates are now at 80.5% of their original sizes. [2018-10-27 08:05:32,858 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:05:33,089 INFO L415 sIntCurrentIteration]: We unified 557 AI predicates to 557 [2018-10-27 08:05:33,089 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:05:33,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:05:33,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-27 08:05:33,090 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:05:33,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:05:33,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:05:33,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:05:33,092 INFO L87 Difference]: Start difference. First operand 5695 states and 7535 transitions. Second operand 9 states. [2018-10-27 08:06:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:06:02,351 INFO L93 Difference]: Finished difference Result 12256 states and 16667 transitions. [2018-10-27 08:06:02,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 08:06:02,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 558 [2018-10-27 08:06:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:06:02,379 INFO L225 Difference]: With dead ends: 12256 [2018-10-27 08:06:02,379 INFO L226 Difference]: Without dead ends: 6935 [2018-10-27 08:06:02,398 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 564 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-27 08:06:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2018-10-27 08:06:02,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 6912. [2018-10-27 08:06:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6912 states. [2018-10-27 08:06:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6912 states to 6912 states and 9045 transitions. [2018-10-27 08:06:02,549 INFO L78 Accepts]: Start accepts. Automaton has 6912 states and 9045 transitions. Word has length 558 [2018-10-27 08:06:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:06:02,550 INFO L481 AbstractCegarLoop]: Abstraction has 6912 states and 9045 transitions. [2018-10-27 08:06:02,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:06:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6912 states and 9045 transitions. [2018-10-27 08:06:02,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2018-10-27 08:06:02,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:06:02,596 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:06:02,596 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:06:02,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash -936470729, now seen corresponding path program 1 times [2018-10-27 08:06:02,597 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:06:02,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:02,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:02,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:02,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:06:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:03,495 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 08:06:04,089 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 08:06:04,371 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 08:06:05,236 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 486 proven. 363 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:06:05,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:05,237 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:06:05,237 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 626 with the following transitions: [2018-10-27 08:06:05,238 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:06:05,242 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:06:05,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:06:10,985 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:06:10,985 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:06:10,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:10,997 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:06:10,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:10,997 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:06:11,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:11,007 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:06:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:11,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:06:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 785 proven. 2 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-10-27 08:06:11,886 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:06:12,029 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2018-10-27 08:06:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 484 proven. 153 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-10-27 08:06:12,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 08:06:12,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-10-27 08:06:12,716 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 08:06:12,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 08:06:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 08:06:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-10-27 08:06:12,719 INFO L87 Difference]: Start difference. First operand 6912 states and 9045 transitions. Second operand 17 states. [2018-10-27 08:06:14,053 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-10-27 08:06:16,496 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-10-27 08:06:16,805 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-10-27 08:06:18,424 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-10-27 08:06:18,745 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2018-10-27 08:06:24,005 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-27 08:06:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:06:25,757 INFO L93 Difference]: Finished difference Result 15508 states and 21194 transitions. [2018-10-27 08:06:25,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-27 08:06:25,758 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 625 [2018-10-27 08:06:25,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:06:25,793 INFO L225 Difference]: With dead ends: 15508 [2018-10-27 08:06:25,793 INFO L226 Difference]: Without dead ends: 8970 [2018-10-27 08:06:25,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1347 GetRequests, 1282 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-10-27 08:06:25,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2018-10-27 08:06:26,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 8477. [2018-10-27 08:06:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8477 states. [2018-10-27 08:06:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8477 states to 8477 states and 10728 transitions. [2018-10-27 08:06:26,124 INFO L78 Accepts]: Start accepts. Automaton has 8477 states and 10728 transitions. Word has length 625 [2018-10-27 08:06:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:06:26,125 INFO L481 AbstractCegarLoop]: Abstraction has 8477 states and 10728 transitions. [2018-10-27 08:06:26,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-27 08:06:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 8477 states and 10728 transitions. [2018-10-27 08:06:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-10-27 08:06:26,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:06:26,162 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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] [2018-10-27 08:06:26,163 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:06:26,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:06:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash 398040255, now seen corresponding path program 1 times [2018-10-27 08:06:26,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:06:26,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:26,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:26,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:06:26,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:06:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:27,574 WARN L179 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-27 08:06:28,059 WARN L179 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-27 08:06:28,801 WARN L179 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-10-27 08:06:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1272 backedges. 634 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-10-27 08:06:29,574 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:29,574 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:06:29,574 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 632 with the following transitions: [2018-10-27 08:06:29,575 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [461], [463], [466], [474], [482], [490], [495], [499], [503], [506], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [830], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-27 08:06:29,578 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:06:29,578 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 08:06:40,887 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 08:06:40,888 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 08:06:40,888 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 08:06:40,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:06:40,889 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:06:40,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:06:40,898 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:06:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:06:41,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:06:41,062 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:06:41,263 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:06:41,263 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:06:41,270 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:06:41,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:06:41 BoogieIcfgContainer [2018-10-27 08:06:41,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:06:41,271 INFO L168 Benchmark]: Toolchain (without parser) took 235984.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-27 08:06:41,272 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 08:06:41,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:41,273 INFO L168 Benchmark]: Boogie Procedure Inliner took 231.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:41,274 INFO L168 Benchmark]: Boogie Preprocessor took 117.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:41,274 INFO L168 Benchmark]: RCFGBuilder took 3726.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. [2018-10-27 08:06:41,275 INFO L168 Benchmark]: TraceAbstraction took 231145.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -699.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 08:06:41,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 757.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 231.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -839.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3726.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 130.3 MB). Peak memory consumption was 130.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231145.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -699.1 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was analyzing trace of length 632 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 231.0s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 165.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1678 SDtfs, 10869 SDslu, 2266 SDs, 0 SdLazy, 17059 SolverSat, 3063 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.2s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 3245 GetRequests, 3102 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8477occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 38.7s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9977146582625492 AbsIntWeakeningRatio, 0.07302452316076294 AbsIntAvgWeakeningVarsNumRemoved, 16.280653950953678 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 674 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 3811 NumberOfCodeBlocks, 3811 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4424 ConstructedInterpolants, 0 QuantifiedInterpolants, 12892073 SizeOfPredicates, 7 NumberOfNonLiveVariables, 887 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 4522/5700 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown