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/Problem15_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 08:13:02,385 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 08:13:02,389 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 08:13:02,401 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 08:13:02,401 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 08:13:02,402 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 08:13:02,404 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 08:13:02,405 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 08:13:02,407 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 08:13:02,408 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 08:13:02,408 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 08:13:02,409 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 08:13:02,410 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 08:13:02,411 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 08:13:02,412 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 08:13:02,413 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 08:13:02,413 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 08:13:02,417 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 08:13:02,419 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 08:13:02,423 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 08:13:02,426 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 08:13:02,428 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 08:13:02,432 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 08:13:02,433 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 08:13:02,433 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 08:13:02,437 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 08:13:02,443 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 08:13:02,444 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 08:13:02,445 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 08:13:02,445 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 08:13:02,446 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 08:13:02,446 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 08:13:02,446 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 08:13:02,447 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 08:13:02,448 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 08:13:02,448 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 08:13:02,448 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 08:13:02,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 08:13:02,467 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 08:13:02,468 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 08:13:02,468 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 08:13:02,468 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 08:13:02,468 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 08:13:02,468 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 08:13:02,469 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 08:13:02,469 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 08:13:02,469 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 08:13:02,469 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 08:13:02,469 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 08:13:02,470 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 08:13:02,470 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 08:13:02,470 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 08:13:02,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 08:13:02,471 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 08:13:02,471 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 08:13:02,471 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 08:13:02,471 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 08:13:02,472 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 08:13:02,472 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 08:13:02,472 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 08:13:02,472 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 08:13:02,472 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 08:13:02,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 08:13:02,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 08:13:02,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 08:13:02,473 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 08:13:02,473 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 08:13:02,474 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 08:13:02,474 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 08:13:02,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 08:13:02,474 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 08:13:02,474 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 08:13:02,475 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 08:13:02,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 08:13:02,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 08:13:02,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 08:13:02,541 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 08:13:02,541 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 08:13:02,542 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28_true-unreach-call.c [2018-10-27 08:13:02,613 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2254aee8/ffe6e63c3f2a4896b1ed17a5150d2f30/FLAG1099c8092 [2018-10-27 08:13:03,324 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 08:13:03,326 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label28_true-unreach-call.c [2018-10-27 08:13:03,349 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2254aee8/ffe6e63c3f2a4896b1ed17a5150d2f30/FLAG1099c8092 [2018-10-27 08:13:03,372 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c2254aee8/ffe6e63c3f2a4896b1ed17a5150d2f30 [2018-10-27 08:13:03,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 08:13:03,387 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 08:13:03,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 08:13:03,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 08:13:03,394 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 08:13:03,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:13:03" (1/1) ... [2018-10-27 08:13:03,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28800817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:03, skipping insertion in model container [2018-10-27 08:13:03,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:13:03" (1/1) ... [2018-10-27 08:13:03,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 08:13:03,503 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 08:13:04,330 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:13:04,335 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 08:13:04,611 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 08:13:04,633 INFO L193 MainTranslator]: Completed translation [2018-10-27 08:13:04,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04 WrapperNode [2018-10-27 08:13:04,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 08:13:04,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 08:13:04,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 08:13:04,636 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 08:13:04,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:04,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 08:13:05,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 08:13:05,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 08:13:05,051 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 08:13:05,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (1/1) ... [2018-10-27 08:13:05,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 08:13:05,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 08:13:05,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 08:13:05,254 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 08:13:05,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (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 08:13:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 08:13:05,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 08:13:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 08:13:05,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 08:13:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 08:13:05,328 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 08:13:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 08:13:05,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 08:13:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 08:13:05,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 08:13:14,361 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 08:13:14,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:13:14 BoogieIcfgContainer [2018-10-27 08:13:14,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 08:13:14,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 08:13:14,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 08:13:14,368 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 08:13:14,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:13:03" (1/3) ... [2018-10-27 08:13:14,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cf07b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:13:14, skipping insertion in model container [2018-10-27 08:13:14,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:13:04" (2/3) ... [2018-10-27 08:13:14,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cf07b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:13:14, skipping insertion in model container [2018-10-27 08:13:14,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:13:14" (3/3) ... [2018-10-27 08:13:14,372 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label28_true-unreach-call.c [2018-10-27 08:13:14,382 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 08:13:14,391 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 08:13:14,409 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 08:13:14,449 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 08:13:14,450 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 08:13:14,450 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 08:13:14,450 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 08:13:14,450 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 08:13:14,450 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 08:13:14,450 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 08:13:14,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 08:13:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 08:13:14,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-27 08:13:14,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:14,492 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] [2018-10-27 08:13:14,494 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:14,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:14,501 INFO L82 PathProgramCache]: Analyzing trace with hash 339561401, now seen corresponding path program 1 times [2018-10-27 08:13:14,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:14,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:14,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:14,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:14,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:14,941 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 08:13:15,031 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 08:13:15,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:15,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:13:15,034 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:15,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:13:15,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:13:15,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:13:15,058 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-27 08:13:20,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:20,505 INFO L93 Difference]: Finished difference Result 1194 states and 2152 transitions. [2018-10-27 08:13:20,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:13:20,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-10-27 08:13:20,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:20,532 INFO L225 Difference]: With dead ends: 1194 [2018-10-27 08:13:20,533 INFO L226 Difference]: Without dead ends: 754 [2018-10-27 08:13:20,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:13:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2018-10-27 08:13:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 752. [2018-10-27 08:13:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-10-27 08:13:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1325 transitions. [2018-10-27 08:13:20,646 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1325 transitions. Word has length 39 [2018-10-27 08:13:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:20,646 INFO L481 AbstractCegarLoop]: Abstraction has 752 states and 1325 transitions. [2018-10-27 08:13:20,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:13:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1325 transitions. [2018-10-27 08:13:20,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-27 08:13:20,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:20,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:20,658 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:20,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:20,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1690148053, now seen corresponding path program 1 times [2018-10-27 08:13:20,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:20,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:20,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:20,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:20,661 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:13:20,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:20,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:13:20,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:20,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:13:20,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:13:20,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:13:20,992 INFO L87 Difference]: Start difference. First operand 752 states and 1325 transitions. Second operand 6 states. [2018-10-27 08:13:35,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:35,924 INFO L93 Difference]: Finished difference Result 2839 states and 5159 transitions. [2018-10-27 08:13:35,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:13:35,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-10-27 08:13:35,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:35,951 INFO L225 Difference]: With dead ends: 2839 [2018-10-27 08:13:35,951 INFO L226 Difference]: Without dead ends: 2093 [2018-10-27 08:13:35,960 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 08:13:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2018-10-27 08:13:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 2055. [2018-10-27 08:13:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2055 states. [2018-10-27 08:13:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2055 states to 2055 states and 3404 transitions. [2018-10-27 08:13:36,074 INFO L78 Accepts]: Start accepts. Automaton has 2055 states and 3404 transitions. Word has length 113 [2018-10-27 08:13:36,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:36,075 INFO L481 AbstractCegarLoop]: Abstraction has 2055 states and 3404 transitions. [2018-10-27 08:13:36,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:13:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2055 states and 3404 transitions. [2018-10-27 08:13:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-27 08:13:36,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:36,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:36,088 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:36,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:36,088 INFO L82 PathProgramCache]: Analyzing trace with hash 55667084, now seen corresponding path program 1 times [2018-10-27 08:13:36,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:36,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:36,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:36,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:36,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:13:36,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:36,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:13:36,342 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:36,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:13:36,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:13:36,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:13:36,344 INFO L87 Difference]: Start difference. First operand 2055 states and 3404 transitions. Second operand 5 states. [2018-10-27 08:13:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:45,297 INFO L93 Difference]: Finished difference Result 6122 states and 10301 transitions. [2018-10-27 08:13:45,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:13:45,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-27 08:13:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:45,329 INFO L225 Difference]: With dead ends: 6122 [2018-10-27 08:13:45,329 INFO L226 Difference]: Without dead ends: 4073 [2018-10-27 08:13:45,340 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 08:13:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4073 states. [2018-10-27 08:13:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4073 to 3996. [2018-10-27 08:13:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3996 states. [2018-10-27 08:13:45,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 5874 transitions. [2018-10-27 08:13:45,488 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 5874 transitions. Word has length 116 [2018-10-27 08:13:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:45,488 INFO L481 AbstractCegarLoop]: Abstraction has 3996 states and 5874 transitions. [2018-10-27 08:13:45,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:13:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 5874 transitions. [2018-10-27 08:13:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-27 08:13:45,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:45,494 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:45,494 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:45,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:45,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1327529950, now seen corresponding path program 1 times [2018-10-27 08:13:45,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:45,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:45,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:45,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:45,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:13:45,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:45,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 08:13:45,748 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:45,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:13:45,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:13:45,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:13:45,749 INFO L87 Difference]: Start difference. First operand 3996 states and 5874 transitions. Second operand 6 states. [2018-10-27 08:13:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:13:54,630 INFO L93 Difference]: Finished difference Result 11083 states and 16941 transitions. [2018-10-27 08:13:54,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 08:13:54,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-27 08:13:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:13:54,679 INFO L225 Difference]: With dead ends: 11083 [2018-10-27 08:13:54,679 INFO L226 Difference]: Without dead ends: 7093 [2018-10-27 08:13:54,713 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 08:13:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2018-10-27 08:13:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6984. [2018-10-27 08:13:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6984 states. [2018-10-27 08:13:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 9527 transitions. [2018-10-27 08:13:54,931 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 9527 transitions. Word has length 126 [2018-10-27 08:13:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:13:54,932 INFO L481 AbstractCegarLoop]: Abstraction has 6984 states and 9527 transitions. [2018-10-27 08:13:54,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:13:54,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 9527 transitions. [2018-10-27 08:13:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-27 08:13:54,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:13:54,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:13:54,936 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:13:54,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:13:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1824244347, now seen corresponding path program 1 times [2018-10-27 08:13:54,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:13:54,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:54,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:13:54,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:13:54,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:13:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:13:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:13:55,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:13:55,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 08:13:55,300 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:13:55,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 08:13:55,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 08:13:55,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 08:13:55,303 INFO L87 Difference]: Start difference. First operand 6984 states and 9527 transitions. Second operand 5 states. [2018-10-27 08:14:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:10,831 INFO L93 Difference]: Finished difference Result 18666 states and 26327 transitions. [2018-10-27 08:14:10,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 08:14:10,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-10-27 08:14:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:10,877 INFO L225 Difference]: With dead ends: 18666 [2018-10-27 08:14:10,877 INFO L226 Difference]: Without dead ends: 11688 [2018-10-27 08:14:10,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 08:14:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11688 states. [2018-10-27 08:14:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11688 to 11527. [2018-10-27 08:14:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11527 states. [2018-10-27 08:14:11,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11527 states to 11527 states and 15503 transitions. [2018-10-27 08:14:11,163 INFO L78 Accepts]: Start accepts. Automaton has 11527 states and 15503 transitions. Word has length 136 [2018-10-27 08:14:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:11,164 INFO L481 AbstractCegarLoop]: Abstraction has 11527 states and 15503 transitions. [2018-10-27 08:14:11,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 08:14:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11527 states and 15503 transitions. [2018-10-27 08:14:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-27 08:14:11,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:11,167 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:14:11,167 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:11,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:11,168 INFO L82 PathProgramCache]: Analyzing trace with hash 298084566, now seen corresponding path program 1 times [2018-10-27 08:14:11,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:11,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:11,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:11,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:11,169 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:11,773 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-10-27 08:14:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:14:12,102 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:12,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:14:12,103 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-10-27 08:14:12,106 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:14:12,184 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:14:12,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:14:12,632 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:14:12,633 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 08:14:12,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:12,667 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:14:13,111 INFO L227 lantSequenceWeakener]: Weakened 145 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-27 08:14:13,112 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:14:13,371 INFO L415 sIntCurrentIteration]: We unified 150 AI predicates to 150 [2018-10-27 08:14:13,372 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:14:13,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:14:13,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-27 08:14:13,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:14:13,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 08:14:13,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 08:14:13,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 08:14:13,375 INFO L87 Difference]: Start difference. First operand 11527 states and 15503 transitions. Second operand 6 states. [2018-10-27 08:14:43,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:14:43,289 INFO L93 Difference]: Finished difference Result 23041 states and 30996 transitions. [2018-10-27 08:14:43,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 08:14:43,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-27 08:14:43,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:14:43,338 INFO L225 Difference]: With dead ends: 23041 [2018-10-27 08:14:43,339 INFO L226 Difference]: Without dead ends: 11520 [2018-10-27 08:14:43,374 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 151 GetRequests, 146 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 08:14:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11520 states. [2018-10-27 08:14:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11520 to 11518. [2018-10-27 08:14:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11518 states. [2018-10-27 08:14:43,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11518 states to 11518 states and 15462 transitions. [2018-10-27 08:14:43,608 INFO L78 Accepts]: Start accepts. Automaton has 11518 states and 15462 transitions. Word has length 151 [2018-10-27 08:14:43,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:14:43,608 INFO L481 AbstractCegarLoop]: Abstraction has 11518 states and 15462 transitions. [2018-10-27 08:14:43,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 08:14:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 11518 states and 15462 transitions. [2018-10-27 08:14:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-27 08:14:43,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:14:43,614 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 08:14:43,615 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:14:43,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:43,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1643772052, now seen corresponding path program 1 times [2018-10-27 08:14:43,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:14:43,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:43,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:14:43,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:14:43,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:14:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:14:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:14:44,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:14:44,360 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:14:44,360 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-10-27 08:14:44,361 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:14:44,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:14:44,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:14:44,593 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 08:14:44,594 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 08:14:44,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:14:44,626 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 08:14:44,895 INFO L227 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 83.73% of their original sizes. [2018-10-27 08:14:44,897 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 08:14:45,003 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-10-27 08:14:45,004 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 08:14:45,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:14:45,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-10-27 08:14:45,004 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:14:45,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 08:14:45,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 08:14:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:14:45,006 INFO L87 Difference]: Start difference. First operand 11518 states and 15462 transitions. Second operand 9 states. [2018-10-27 08:16:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:16:07,788 INFO L93 Difference]: Finished difference Result 23317 states and 31287 transitions. [2018-10-27 08:16:07,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 08:16:07,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2018-10-27 08:16:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:16:07,830 INFO L225 Difference]: With dead ends: 23317 [2018-10-27 08:16:07,831 INFO L226 Difference]: Without dead ends: 12113 [2018-10-27 08:16:07,858 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 252 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-27 08:16:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12113 states. [2018-10-27 08:16:08,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12113 to 12108. [2018-10-27 08:16:08,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12108 states. [2018-10-27 08:16:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12108 states to 12108 states and 16085 transitions. [2018-10-27 08:16:08,089 INFO L78 Accepts]: Start accepts. Automaton has 12108 states and 16085 transitions. Word has length 247 [2018-10-27 08:16:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:16:08,090 INFO L481 AbstractCegarLoop]: Abstraction has 12108 states and 16085 transitions. [2018-10-27 08:16:08,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 08:16:08,090 INFO L276 IsEmpty]: Start isEmpty. Operand 12108 states and 16085 transitions. [2018-10-27 08:16:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-27 08:16:08,100 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:16:08,101 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:16:08,101 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:16:08,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:08,102 INFO L82 PathProgramCache]: Analyzing trace with hash 851503085, now seen corresponding path program 1 times [2018-10-27 08:16:08,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:16:08,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:08,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:08,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:08,103 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:16:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-27 08:16:08,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:16:08,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:16:08,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:16:08,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:16:08,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:16:08,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:16:08,745 INFO L87 Difference]: Start difference. First operand 12108 states and 16085 transitions. Second operand 4 states. [2018-10-27 08:16:15,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:16:15,024 INFO L93 Difference]: Finished difference Result 38888 states and 54974 transitions. [2018-10-27 08:16:15,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:16:15,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 336 [2018-10-27 08:16:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:16:15,162 INFO L225 Difference]: With dead ends: 38888 [2018-10-27 08:16:15,162 INFO L226 Difference]: Without dead ends: 27094 [2018-10-27 08:16:15,237 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 08:16:15,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27094 states. [2018-10-27 08:16:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27094 to 27056. [2018-10-27 08:16:15,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27056 states. [2018-10-27 08:16:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27056 states to 27056 states and 34574 transitions. [2018-10-27 08:16:15,824 INFO L78 Accepts]: Start accepts. Automaton has 27056 states and 34574 transitions. Word has length 336 [2018-10-27 08:16:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:16:15,826 INFO L481 AbstractCegarLoop]: Abstraction has 27056 states and 34574 transitions. [2018-10-27 08:16:15,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:16:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 27056 states and 34574 transitions. [2018-10-27 08:16:15,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-27 08:16:15,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:16:15,844 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 08:16:15,845 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:16:15,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:15,845 INFO L82 PathProgramCache]: Analyzing trace with hash 394036745, now seen corresponding path program 1 times [2018-10-27 08:16:15,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:16:15,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:15,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:15,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:15,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:16:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 135 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 08:16:16,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:16:16,591 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:16:16,592 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 427 with the following transitions: [2018-10-27 08:16:16,592 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:16:16,602 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:16:16,603 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:16:20,628 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:16:20,629 INFO L272 AbstractInterpreter]: Visited 284 different actions 846 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 08:16:20,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:20,634 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:16:20,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:16:20,634 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 08:16:20,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:20,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:16:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:20,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:16:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:16:21,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 08:16:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-27 08:16:21,939 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-27 08:16:21,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-27 08:16:21,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:16:21,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:16:21,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:16:21,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:16:21,942 INFO L87 Difference]: Start difference. First operand 27056 states and 34574 transitions. Second operand 3 states. [2018-10-27 08:16:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:16:33,337 INFO L93 Difference]: Finished difference Result 56877 states and 76224 transitions. [2018-10-27 08:16:33,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:16:33,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 426 [2018-10-27 08:16:33,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:16:33,486 INFO L225 Difference]: With dead ends: 56877 [2018-10-27 08:16:33,486 INFO L226 Difference]: Without dead ends: 31820 [2018-10-27 08:16:33,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 855 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 08:16:33,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31820 states. [2018-10-27 08:16:34,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31820 to 31813. [2018-10-27 08:16:34,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31813 states. [2018-10-27 08:16:34,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31813 states to 31813 states and 41553 transitions. [2018-10-27 08:16:34,505 INFO L78 Accepts]: Start accepts. Automaton has 31813 states and 41553 transitions. Word has length 426 [2018-10-27 08:16:34,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:16:34,507 INFO L481 AbstractCegarLoop]: Abstraction has 31813 states and 41553 transitions. [2018-10-27 08:16:34,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:16:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31813 states and 41553 transitions. [2018-10-27 08:16:34,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-10-27 08:16:34,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:16:34,536 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:34,536 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:16:34,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:34,537 INFO L82 PathProgramCache]: Analyzing trace with hash -751627900, now seen corresponding path program 1 times [2018-10-27 08:16:34,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:16:34,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:34,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:34,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:34,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:16:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:35,022 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 3 [2018-10-27 08:16:35,239 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 5 [2018-10-27 08:16:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-10-27 08:16:35,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:16:35,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 08:16:35,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:16:35,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 08:16:35,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 08:16:35,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:16:35,390 INFO L87 Difference]: Start difference. First operand 31813 states and 41553 transitions. Second operand 4 states. [2018-10-27 08:16:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:16:41,772 INFO L93 Difference]: Finished difference Result 76051 states and 103331 transitions. [2018-10-27 08:16:41,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 08:16:41,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2018-10-27 08:16:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:16:41,966 INFO L225 Difference]: With dead ends: 76051 [2018-10-27 08:16:41,967 INFO L226 Difference]: Without dead ends: 46237 [2018-10-27 08:16:42,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 08:16:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46237 states. [2018-10-27 08:16:42,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46237 to 46015. [2018-10-27 08:16:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46015 states. [2018-10-27 08:16:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46015 states to 46015 states and 60184 transitions. [2018-10-27 08:16:43,092 INFO L78 Accepts]: Start accepts. Automaton has 46015 states and 60184 transitions. Word has length 472 [2018-10-27 08:16:43,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:16:43,093 INFO L481 AbstractCegarLoop]: Abstraction has 46015 states and 60184 transitions. [2018-10-27 08:16:43,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 08:16:43,093 INFO L276 IsEmpty]: Start isEmpty. Operand 46015 states and 60184 transitions. [2018-10-27 08:16:43,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-10-27 08:16:43,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:16:43,126 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:43,127 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:16:43,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:43,127 INFO L82 PathProgramCache]: Analyzing trace with hash 104952419, now seen corresponding path program 1 times [2018-10-27 08:16:43,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:16:43,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:43,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:43,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:43,129 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:16:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2018-10-27 08:16:43,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 08:16:43,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 08:16:43,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 08:16:43,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 08:16:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 08:16:43,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:16:43,573 INFO L87 Difference]: Start difference. First operand 46015 states and 60184 transitions. Second operand 3 states. [2018-10-27 08:16:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 08:16:49,403 INFO L93 Difference]: Finished difference Result 103486 states and 140222 transitions. [2018-10-27 08:16:49,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 08:16:49,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 484 [2018-10-27 08:16:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 08:16:49,607 INFO L225 Difference]: With dead ends: 103486 [2018-10-27 08:16:49,607 INFO L226 Difference]: Without dead ends: 49482 [2018-10-27 08:16:49,794 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 08:16:49,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49482 states. [2018-10-27 08:16:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49482 to 48979. [2018-10-27 08:16:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48979 states. [2018-10-27 08:16:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48979 states to 48979 states and 60139 transitions. [2018-10-27 08:16:50,682 INFO L78 Accepts]: Start accepts. Automaton has 48979 states and 60139 transitions. Word has length 484 [2018-10-27 08:16:50,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 08:16:50,683 INFO L481 AbstractCegarLoop]: Abstraction has 48979 states and 60139 transitions. [2018-10-27 08:16:50,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 08:16:50,683 INFO L276 IsEmpty]: Start isEmpty. Operand 48979 states and 60139 transitions. [2018-10-27 08:16:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-10-27 08:16:50,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 08:16:50,717 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:16:50,718 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 08:16:50,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:50,718 INFO L82 PathProgramCache]: Analyzing trace with hash 114734965, now seen corresponding path program 1 times [2018-10-27 08:16:50,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 08:16:50,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:50,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:50,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 08:16:50,719 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 08:16:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 332 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 08:16:52,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:16:52,581 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 08:16:52,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 553 with the following transitions: [2018-10-27 08:16:52,582 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1005], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 08:16:52,589 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 08:16:52,589 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 08:16:53,501 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 08:16:53,501 INFO L272 AbstractInterpreter]: Visited 285 different actions 1133 times. Merged at 8 different actions 28 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 08:16:53,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 08:16:53,508 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 08:16:53,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 08:16:53,508 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 08:16:53,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 08:16:53,517 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 08:16:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 08:16:53,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 08:16:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-10-27 08:16:54,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-10-27 08:16:54,607 WARN L187 SmtUtils]: Removed 1 from assertion stack [2018-10-27 08:16:54,608 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 08:16:54,809 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 08:16:54,809 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 08:16:54,814 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 08:16:54,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:16:54 BoogieIcfgContainer [2018-10-27 08:16:54,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 08:16:54,816 INFO L168 Benchmark]: Toolchain (without parser) took 231430.16 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.7 GB). Peak memory consumption was 757.2 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:54,817 INFO L168 Benchmark]: CDTParser took 0.21 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 08:16:54,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1245.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:54,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 414.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:54,819 INFO L168 Benchmark]: Boogie Preprocessor took 203.08 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:54,820 INFO L168 Benchmark]: RCFGBuilder took 9108.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 320.6 MB). Peak memory consumption was 320.6 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:54,820 INFO L168 Benchmark]: TraceAbstraction took 220451.99 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 431.0 MB. Max. memory is 7.1 GB. [2018-10-27 08:16:54,825 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1245.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 414.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 203.08 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: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9108.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 320.6 MB). Peak memory consumption was 320.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220451.99 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 431.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was analyzing trace of length 553 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PartialQuantifierElimination was doing sequential composition of 5 TransFormulas,while SimplifyDDAWithTimeout was simplifying term of DAG size 3. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 220.3s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 198.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4233 SDtfs, 10643 SDslu, 2471 SDs, 0 SdLazy, 20636 SolverSat, 4033 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 158.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1324 GetRequests, 1264 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48979occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.9969664484452456 AbsIntWeakeningRatio, 0.11616161616161616 AbsIntAvgWeakeningVarsNumRemoved, 15.267676767676768 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1164 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 3072 NumberOfCodeBlocks, 3072 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3485 ConstructedInterpolants, 35 QuantifiedInterpolants, 3334886 SizeOfPredicates, 3 NumberOfNonLiveVariables, 607 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 1517/1686 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown