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_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:47:58,360 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:47:58,365 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:47:58,380 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:47:58,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:47:58,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:47:58,383 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:47:58,384 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:47:58,386 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:47:58,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:47:58,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:47:58,388 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:47:58,389 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:47:58,390 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:47:58,391 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:47:58,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:47:58,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:47:58,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:47:58,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:47:58,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:47:58,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:47:58,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:47:58,404 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:47:58,404 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:47:58,405 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:47:58,406 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:47:58,407 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:47:58,408 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:47:58,408 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:47:58,410 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:47:58,410 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:47:58,411 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-25 01:47:58,413 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:47:58,413 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:47:58,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:47:58,416 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:47:58,416 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:47:58,432 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:47:58,433 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:47:58,434 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:47:58,434 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:47:58,434 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:47:58,434 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:47:58,434 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:47:58,435 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:47:58,435 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:47:58,435 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:47:58,435 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:47:58,435 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:47:58,436 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:47:58,436 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:47:58,436 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:47:58,437 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:47:58,437 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:47:58,437 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:47:58,437 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:47:58,437 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:47:58,437 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:47:58,438 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:47:58,438 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:47:58,438 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:47:58,438 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:47:58,438 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:47:58,439 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:47:58,439 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:47:58,439 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:47:58,439 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:47:58,439 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:47:58,440 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:47:58,440 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:47:58,440 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:47:58,440 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:47:58,440 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:47:58,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:47:58,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:47:58,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:47:58,527 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:47:58,527 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:47:58,528 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label20_true-unreach-call.c [2018-10-25 01:47:58,592 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b1b8267b/df679d28b4904a98b6f76fa9245a7020/FLAG8e75cd0a2 [2018-10-25 01:47:59,222 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:47:59,223 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label20_true-unreach-call.c [2018-10-25 01:47:59,242 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b1b8267b/df679d28b4904a98b6f76fa9245a7020/FLAG8e75cd0a2 [2018-10-25 01:47:59,258 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b1b8267b/df679d28b4904a98b6f76fa9245a7020 [2018-10-25 01:47:59,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:47:59,271 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:47:59,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:47:59,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:47:59,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:47:59,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:47:59" (1/1) ... [2018-10-25 01:47:59,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:47:59, skipping insertion in model container [2018-10-25 01:47:59,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:47:59" (1/1) ... [2018-10-25 01:47:59,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:47:59,404 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:48:00,260 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:48:00,264 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:48:00,575 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:48:00,598 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:48:00,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00 WrapperNode [2018-10-25 01:48:00,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:48:00,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:48:00,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:48:00,601 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:48:00,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:00,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:48:01,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:48:01,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:48:01,023 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:48:01,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... [2018-10-25 01:48:01,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:48:01,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:48:01,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:48:01,206 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:48:01,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:48:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:48:01,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:48:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:48:01,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:48:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:48:01,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:48:01,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:48:01,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:48:01,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:48:01,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:48:09,352 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:48:09,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:48:09 BoogieIcfgContainer [2018-10-25 01:48:09,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:48:09,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:48:09,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:48:09,359 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:48:09,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:47:59" (1/3) ... [2018-10-25 01:48:09,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438e7041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:48:09, skipping insertion in model container [2018-10-25 01:48:09,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:48:00" (2/3) ... [2018-10-25 01:48:09,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438e7041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:48:09, skipping insertion in model container [2018-10-25 01:48:09,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:48:09" (3/3) ... [2018-10-25 01:48:09,363 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label20_true-unreach-call.c [2018-10-25 01:48:09,373 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:48:09,383 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:48:09,402 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:48:09,444 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:48:09,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:48:09,445 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:48:09,445 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:48:09,445 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:48:09,445 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:48:09,445 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:48:09,445 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:48:09,479 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-25 01:48:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-25 01:48:09,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:48:09,490 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:48:09,492 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:48:09,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:48:09,499 INFO L82 PathProgramCache]: Analyzing trace with hash 410122177, now seen corresponding path program 1 times [2018-10-25 01:48:09,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:48:09,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:09,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:48:09,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:09,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:48:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:48:10,062 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-25 01:48:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:10,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:48:10,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:48:10,080 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:48:10,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:48:10,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:48:10,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:48:10,106 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-25 01:48:18,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:48:18,903 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-10-25 01:48:18,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:48:18,905 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-25 01:48:18,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:48:18,933 INFO L225 Difference]: With dead ends: 1510 [2018-10-25 01:48:18,933 INFO L226 Difference]: Without dead ends: 1066 [2018-10-25 01:48:18,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:48:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-10-25 01:48:19,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-10-25 01:48:19,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-10-25 01:48:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-10-25 01:48:19,076 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 49 [2018-10-25 01:48:19,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:48:19,077 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-10-25 01:48:19,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:48:19,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-10-25 01:48:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-25 01:48:19,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:48:19,091 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:48:19,091 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:48:19,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:48:19,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1315680885, now seen corresponding path program 1 times [2018-10-25 01:48:19,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:48:19,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:19,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:48:19,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:19,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:48:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:48:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:19,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:48:19,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 01:48:19,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:48:19,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:48:19,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:48:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 01:48:19,429 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 5 states. [2018-10-25 01:48:20,114 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:48:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:48:35,513 INFO L93 Difference]: Finished difference Result 3340 states and 4979 transitions. [2018-10-25 01:48:35,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:48:35,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-25 01:48:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:48:35,534 INFO L225 Difference]: With dead ends: 3340 [2018-10-25 01:48:35,534 INFO L226 Difference]: Without dead ends: 2282 [2018-10-25 01:48:35,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:48:35,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2018-10-25 01:48:35,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2267. [2018-10-25 01:48:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2267 states. [2018-10-25 01:48:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3306 transitions. [2018-10-25 01:48:35,652 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3306 transitions. Word has length 119 [2018-10-25 01:48:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:48:35,652 INFO L481 AbstractCegarLoop]: Abstraction has 2267 states and 3306 transitions. [2018-10-25 01:48:35,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:48:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3306 transitions. [2018-10-25 01:48:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-25 01:48:35,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:48:35,665 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:48:35,666 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:48:35,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:48:35,666 INFO L82 PathProgramCache]: Analyzing trace with hash -2016407952, now seen corresponding path program 1 times [2018-10-25 01:48:35,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:48:35,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:35,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:48:35,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:35,669 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:48:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:48:36,036 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:48:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:36,462 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:48:36,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:48:36,462 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:48:36,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:48:36,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:48:36,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:48:36,466 INFO L87 Difference]: Start difference. First operand 2267 states and 3306 transitions. Second operand 6 states. [2018-10-25 01:48:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:48:42,583 INFO L93 Difference]: Finished difference Result 6382 states and 9947 transitions. [2018-10-25 01:48:42,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:48:42,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-10-25 01:48:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:48:42,613 INFO L225 Difference]: With dead ends: 6382 [2018-10-25 01:48:42,613 INFO L226 Difference]: Without dead ends: 4430 [2018-10-25 01:48:42,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:48:42,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4430 states. [2018-10-25 01:48:42,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4430 to 4375. [2018-10-25 01:48:42,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4375 states. [2018-10-25 01:48:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 5974 transitions. [2018-10-25 01:48:42,749 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 5974 transitions. Word has length 124 [2018-10-25 01:48:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:48:42,749 INFO L481 AbstractCegarLoop]: Abstraction has 4375 states and 5974 transitions. [2018-10-25 01:48:42,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:48:42,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 5974 transitions. [2018-10-25 01:48:42,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-25 01:48:42,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:48:42,752 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:48:42,753 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:48:42,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:48:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2021875324, now seen corresponding path program 1 times [2018-10-25 01:48:42,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:48:42,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:42,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:48:42,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:42,755 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:48:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:48:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:42,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:48:42,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:48:42,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:48:42,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:48:42,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:48:42,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:48:42,956 INFO L87 Difference]: Start difference. First operand 4375 states and 5974 transitions. Second operand 4 states. [2018-10-25 01:48:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:48:48,408 INFO L93 Difference]: Finished difference Result 11465 states and 16390 transitions. [2018-10-25 01:48:48,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:48:48,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2018-10-25 01:48:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:48:48,452 INFO L225 Difference]: With dead ends: 11465 [2018-10-25 01:48:48,452 INFO L226 Difference]: Without dead ends: 7405 [2018-10-25 01:48:48,477 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 [2018-10-25 01:48:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7405 states. [2018-10-25 01:48:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7405 to 7399. [2018-10-25 01:48:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7399 states. [2018-10-25 01:48:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7399 states to 7399 states and 9840 transitions. [2018-10-25 01:48:48,676 INFO L78 Accepts]: Start accepts. Automaton has 7399 states and 9840 transitions. Word has length 130 [2018-10-25 01:48:48,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:48:48,677 INFO L481 AbstractCegarLoop]: Abstraction has 7399 states and 9840 transitions. [2018-10-25 01:48:48,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:48:48,677 INFO L276 IsEmpty]: Start isEmpty. Operand 7399 states and 9840 transitions. [2018-10-25 01:48:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-25 01:48:48,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:48:48,685 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:48:48,685 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:48:48,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:48:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash 419544631, now seen corresponding path program 1 times [2018-10-25 01:48:48,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:48:48,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:48,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:48:48,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:48:48,690 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:48:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:48:49,097 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:49,098 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:48:49,098 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:48:49,099 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2018-10-25 01:48:49,101 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:48:49,153 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:48:49,153 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:48:50,098 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:48:50,099 INFO L272 AbstractInterpreter]: Visited 104 different actions 298 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-25 01:48:50,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:48:50,146 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:48:50,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:48:50,146 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:48:50,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:48:50,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:48:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:48:50,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:48:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:50,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:48:50,720 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 01:48:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:48:51,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:48:51,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 01:48:51,231 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:48:51,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:48:51,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:48:51,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:48:51,233 INFO L87 Difference]: Start difference. First operand 7399 states and 9840 transitions. Second operand 6 states. [2018-10-25 01:48:59,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:48:59,790 INFO L93 Difference]: Finished difference Result 25922 states and 36237 transitions. [2018-10-25 01:48:59,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:48:59,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-25 01:48:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:48:59,891 INFO L225 Difference]: With dead ends: 25922 [2018-10-25 01:48:59,892 INFO L226 Difference]: Without dead ends: 18838 [2018-10-25 01:48:59,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:49:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2018-10-25 01:49:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 18786. [2018-10-25 01:49:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18786 states. [2018-10-25 01:49:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18786 states to 18786 states and 25161 transitions. [2018-10-25 01:49:00,457 INFO L78 Accepts]: Start accepts. Automaton has 18786 states and 25161 transitions. Word has length 145 [2018-10-25 01:49:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:00,458 INFO L481 AbstractCegarLoop]: Abstraction has 18786 states and 25161 transitions. [2018-10-25 01:49:00,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:49:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18786 states and 25161 transitions. [2018-10-25 01:49:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-25 01:49:00,480 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:00,480 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:49:00,480 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:00,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:00,481 INFO L82 PathProgramCache]: Analyzing trace with hash 577768630, now seen corresponding path program 1 times [2018-10-25 01:49:00,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:00,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:00,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:00,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:00,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 66 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 01:49:01,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:01,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:49:01,110 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-25 01:49:01,111 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [585], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:49:01,122 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:49:01,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:49:01,563 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:49:01,564 INFO L272 AbstractInterpreter]: Visited 105 different actions 301 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-25 01:49:01,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:01,592 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:49:01,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:01,592 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:49:01,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:01,612 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:49:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:01,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:49:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:49:01,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:49:02,167 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 01:49:02,957 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-10-25 01:49:02,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:49:02,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2018-10-25 01:49:02,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:49:02,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:49:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:49:02,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:49:02,979 INFO L87 Difference]: Start difference. First operand 18786 states and 25161 transitions. Second operand 5 states. [2018-10-25 01:49:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:07,491 INFO L93 Difference]: Finished difference Result 43199 states and 60674 transitions. [2018-10-25 01:49:07,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:49:07,492 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 218 [2018-10-25 01:49:07,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:07,614 INFO L225 Difference]: With dead ends: 43199 [2018-10-25 01:49:07,614 INFO L226 Difference]: Without dead ends: 24727 [2018-10-25 01:49:07,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 434 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:49:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24727 states. [2018-10-25 01:49:08,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24727 to 23619. [2018-10-25 01:49:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23619 states. [2018-10-25 01:49:08,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23619 states to 23619 states and 30133 transitions. [2018-10-25 01:49:08,227 INFO L78 Accepts]: Start accepts. Automaton has 23619 states and 30133 transitions. Word has length 218 [2018-10-25 01:49:08,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:08,227 INFO L481 AbstractCegarLoop]: Abstraction has 23619 states and 30133 transitions. [2018-10-25 01:49:08,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:49:08,227 INFO L276 IsEmpty]: Start isEmpty. Operand 23619 states and 30133 transitions. [2018-10-25 01:49:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-25 01:49:08,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:08,264 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:49:08,265 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:08,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:08,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2071919887, now seen corresponding path program 1 times [2018-10-25 01:49:08,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:08,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:08,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:08,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:08,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:08,962 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-25 01:49:08,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:08,962 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:49:08,963 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: [2018-10-25 01:49:08,963 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [746], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:49:08,967 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:49:08,968 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:49:09,098 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:49:09,099 INFO L272 AbstractInterpreter]: Visited 113 different actions 113 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-25 01:49:09,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:09,136 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:49:09,540 INFO L232 lantSequenceWeakener]: Weakened 229 states. On average, predicates are now at 77.92% of their original sizes. [2018-10-25 01:49:09,540 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:49:09,773 INFO L413 sIntCurrentIteration]: We have 237 unified AI predicates [2018-10-25 01:49:09,773 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:49:09,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:49:09,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-10-25 01:49:09,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:49:09,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:49:09,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:49:09,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:49:09,776 INFO L87 Difference]: Start difference. First operand 23619 states and 30133 transitions. Second operand 6 states. [2018-10-25 01:50:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:50:27,465 INFO L93 Difference]: Finished difference Result 46926 states and 59922 transitions. [2018-10-25 01:50:27,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:50:27,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 238 [2018-10-25 01:50:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:50:27,555 INFO L225 Difference]: With dead ends: 46926 [2018-10-25 01:50:27,555 INFO L226 Difference]: Without dead ends: 23621 [2018-10-25 01:50:27,627 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:50:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23621 states. [2018-10-25 01:50:27,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23621 to 23619. [2018-10-25 01:50:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23619 states. [2018-10-25 01:50:28,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23619 states to 23619 states and 30109 transitions. [2018-10-25 01:50:28,047 INFO L78 Accepts]: Start accepts. Automaton has 23619 states and 30109 transitions. Word has length 238 [2018-10-25 01:50:28,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:28,048 INFO L481 AbstractCegarLoop]: Abstraction has 23619 states and 30109 transitions. [2018-10-25 01:50:28,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:50:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 23619 states and 30109 transitions. [2018-10-25 01:50:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-25 01:50:28,082 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:28,082 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:50:28,083 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:28,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:28,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1405899324, now seen corresponding path program 1 times [2018-10-25 01:50:28,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:28,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:28,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:28,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:28,085 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:28,417 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:50:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 132 proven. 242 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-25 01:50:28,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:28,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:50:28,978 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-25 01:50:28,979 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [734], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:50:28,985 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:50:28,985 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:50:29,218 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:50:29,219 INFO L272 AbstractInterpreter]: Visited 115 different actions 331 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-25 01:50:29,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:29,246 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:50:29,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:29,246 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:50:29,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:29,262 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:50:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:29,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:50:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-25 01:50:29,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:50:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 214 proven. 84 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-25 01:50:30,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:50:30,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:50:30,459 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:50:30,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:50:30,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:50:30,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:50:30,461 INFO L87 Difference]: Start difference. First operand 23619 states and 30109 transitions. Second operand 9 states. [2018-10-25 01:50:40,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:50:40,894 INFO L93 Difference]: Finished difference Result 49459 states and 63530 transitions. [2018-10-25 01:50:40,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 01:50:40,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 337 [2018-10-25 01:50:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:50:40,975 INFO L225 Difference]: With dead ends: 49459 [2018-10-25 01:50:40,976 INFO L226 Difference]: Without dead ends: 26154 [2018-10-25 01:50:41,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 682 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2018-10-25 01:50:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26154 states. [2018-10-25 01:50:41,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26154 to 25567. [2018-10-25 01:50:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25567 states. [2018-10-25 01:50:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25567 states to 25567 states and 29997 transitions. [2018-10-25 01:50:41,533 INFO L78 Accepts]: Start accepts. Automaton has 25567 states and 29997 transitions. Word has length 337 [2018-10-25 01:50:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:41,534 INFO L481 AbstractCegarLoop]: Abstraction has 25567 states and 29997 transitions. [2018-10-25 01:50:41,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:50:41,534 INFO L276 IsEmpty]: Start isEmpty. Operand 25567 states and 29997 transitions. [2018-10-25 01:50:41,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-10-25 01:50:41,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:41,555 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:50:41,555 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:41,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:41,556 INFO L82 PathProgramCache]: Analyzing trace with hash 560387599, now seen corresponding path program 1 times [2018-10-25 01:50:41,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:41,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:41,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:41,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:41,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:50:42,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:42,082 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:50:42,083 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 461 with the following transitions: [2018-10-25 01:50:42,083 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [838], [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], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:50:42,090 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:50:42,091 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:50:42,901 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:50:42,901 INFO L272 AbstractInterpreter]: Visited 296 different actions 883 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:50:42,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:42,911 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:50:42,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:42,911 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:50:42,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:42,920 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:50:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:43,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:50:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:50:43,307 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:50:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:50:43,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:50:43,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:50:43,544 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:50:43,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:50:43,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:50:43,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:50:43,546 INFO L87 Difference]: Start difference. First operand 25567 states and 29997 transitions. Second operand 9 states. [2018-10-25 01:50:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:50:52,047 INFO L93 Difference]: Finished difference Result 58591 states and 75219 transitions. [2018-10-25 01:50:52,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-25 01:50:52,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 460 [2018-10-25 01:50:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:50:52,250 INFO L225 Difference]: With dead ends: 58591 [2018-10-25 01:50:52,250 INFO L226 Difference]: Without dead ends: 33338 [2018-10-25 01:50:52,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 922 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:50:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33338 states. [2018-10-25 01:50:53,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33338 to 31712. [2018-10-25 01:50:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31712 states. [2018-10-25 01:50:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31712 states to 31712 states and 40189 transitions. [2018-10-25 01:50:53,156 INFO L78 Accepts]: Start accepts. Automaton has 31712 states and 40189 transitions. Word has length 460 [2018-10-25 01:50:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:50:53,157 INFO L481 AbstractCegarLoop]: Abstraction has 31712 states and 40189 transitions. [2018-10-25 01:50:53,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:50:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 31712 states and 40189 transitions. [2018-10-25 01:50:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-25 01:50:53,174 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:50:53,175 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:50:53,175 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:50:53,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:53,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1589841736, now seen corresponding path program 1 times [2018-10-25 01:50:53,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:50:53,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:53,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:53,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:50:53,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:50:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:50:53,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:53,968 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:50:53,968 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 471 with the following transitions: [2018-10-25 01:50:53,969 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [838], [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], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:50:53,974 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:50:53,974 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:50:54,813 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:50:54,813 INFO L272 AbstractInterpreter]: Visited 211 different actions 839 times. Merged at 8 different actions 29 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:50:54,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:50:54,846 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:50:54,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:50:54,846 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:50:54,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:50:54,855 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:50:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:50:54,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:50:55,254 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2018-10-25 01:50:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:50:55,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:50:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:50:55,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:50:55,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:50:55,675 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:50:55,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:50:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:50:55,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:50:55,676 INFO L87 Difference]: Start difference. First operand 31712 states and 40189 transitions. Second operand 9 states. [2018-10-25 01:51:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:51:03,875 INFO L93 Difference]: Finished difference Result 59835 states and 74669 transitions. [2018-10-25 01:51:03,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-25 01:51:03,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 470 [2018-10-25 01:51:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:51:04,001 INFO L225 Difference]: With dead ends: 59835 [2018-10-25 01:51:04,001 INFO L226 Difference]: Without dead ends: 28437 [2018-10-25 01:51:04,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 944 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:51:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28437 states. [2018-10-25 01:51:04,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28437 to 28222. [2018-10-25 01:51:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28222 states. [2018-10-25 01:51:04,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28222 states to 28222 states and 32102 transitions. [2018-10-25 01:51:04,655 INFO L78 Accepts]: Start accepts. Automaton has 28222 states and 32102 transitions. Word has length 470 [2018-10-25 01:51:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:51:04,656 INFO L481 AbstractCegarLoop]: Abstraction has 28222 states and 32102 transitions. [2018-10-25 01:51:04,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:51:04,656 INFO L276 IsEmpty]: Start isEmpty. Operand 28222 states and 32102 transitions. [2018-10-25 01:51:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-10-25 01:51:04,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:51:04,668 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:51:04,668 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:51:04,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:51:04,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1889386295, now seen corresponding path program 1 times [2018-10-25 01:51:04,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:51:04,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:04,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:51:04,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:04,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:51:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:51:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-25 01:51:05,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:51:05,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:51:05,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:51:05,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:51:05,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:51:05,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:51:05,097 INFO L87 Difference]: Start difference. First operand 28222 states and 32102 transitions. Second operand 4 states. [2018-10-25 01:51:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:51:09,751 INFO L93 Difference]: Finished difference Result 74611 states and 87512 transitions. [2018-10-25 01:51:09,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:51:09,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2018-10-25 01:51:09,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:51:09,885 INFO L225 Difference]: With dead ends: 74611 [2018-10-25 01:51:09,885 INFO L226 Difference]: Without dead ends: 46703 [2018-10-25 01:51:09,978 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 [2018-10-25 01:51:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46703 states. [2018-10-25 01:51:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46703 to 45941. [2018-10-25 01:51:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45941 states. [2018-10-25 01:51:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45941 states to 45941 states and 52536 transitions. [2018-10-25 01:51:10,717 INFO L78 Accepts]: Start accepts. Automaton has 45941 states and 52536 transitions. Word has length 473 [2018-10-25 01:51:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:51:10,718 INFO L481 AbstractCegarLoop]: Abstraction has 45941 states and 52536 transitions. [2018-10-25 01:51:10,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:51:10,718 INFO L276 IsEmpty]: Start isEmpty. Operand 45941 states and 52536 transitions. [2018-10-25 01:51:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2018-10-25 01:51:10,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:51:10,728 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:51:10,729 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:51:10,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:51:10,729 INFO L82 PathProgramCache]: Analyzing trace with hash -270304285, now seen corresponding path program 1 times [2018-10-25 01:51:10,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:51:10,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:10,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:51:10,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:10,731 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:51:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:51:11,082 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2018-10-25 01:51:11,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:51:11,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 01:51:11,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:51:11,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:51:11,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:51:11,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 01:51:11,084 INFO L87 Difference]: Start difference. First operand 45941 states and 52536 transitions. Second operand 3 states. [2018-10-25 01:51:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:51:14,983 INFO L93 Difference]: Finished difference Result 109384 states and 126640 transitions. [2018-10-25 01:51:14,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:51:14,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 541 [2018-10-25 01:51:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:51:15,097 INFO L225 Difference]: With dead ends: 109384 [2018-10-25 01:51:15,098 INFO L226 Difference]: Without dead ends: 49350 [2018-10-25 01:51:15,244 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 [2018-10-25 01:51:15,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49350 states. [2018-10-25 01:51:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49350 to 46266. [2018-10-25 01:51:15,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46266 states. [2018-10-25 01:51:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46266 states to 46266 states and 50509 transitions. [2018-10-25 01:51:15,883 INFO L78 Accepts]: Start accepts. Automaton has 46266 states and 50509 transitions. Word has length 541 [2018-10-25 01:51:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:51:15,884 INFO L481 AbstractCegarLoop]: Abstraction has 46266 states and 50509 transitions. [2018-10-25 01:51:15,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:51:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 46266 states and 50509 transitions. [2018-10-25 01:51:15,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-10-25 01:51:15,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:51:15,933 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:51:15,933 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:51:15,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:51:15,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1143651567, now seen corresponding path program 1 times [2018-10-25 01:51:15,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:51:15,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:15,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:51:15,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:15,935 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:51:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:51:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-25 01:51:16,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:51:16,838 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:51:16,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 766 with the following transitions: [2018-10-25 01:51:16,838 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [857], [860], [864], [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], [1183], [1188], [1190], [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] [2018-10-25 01:51:16,844 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:51:16,844 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:51:32,035 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:51:32,036 INFO L272 AbstractInterpreter]: Visited 290 different actions 865 times. Merged at 9 different actions 27 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:51:32,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:51:32,043 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:51:32,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:51:32,043 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:51:32,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:51:32,052 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:51:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:51:32,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:51:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2018-10-25 01:51:32,533 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:51:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-10-25 01:51:32,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:51:32,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-10-25 01:51:32,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:51:32,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:51:32,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:51:32,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:51:32,921 INFO L87 Difference]: Start difference. First operand 46266 states and 50509 transitions. Second operand 3 states. [2018-10-25 01:51:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:51:35,317 INFO L93 Difference]: Finished difference Result 92521 states and 101064 transitions. [2018-10-25 01:51:35,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:51:35,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 765 [2018-10-25 01:51:35,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:51:35,432 INFO L225 Difference]: With dead ends: 92521 [2018-10-25 01:51:35,433 INFO L226 Difference]: Without dead ends: 46569 [2018-10-25 01:51:35,511 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1530 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:51:35,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46569 states. [2018-10-25 01:51:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46569 to 45949. [2018-10-25 01:51:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45949 states. [2018-10-25 01:51:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45949 states to 45949 states and 50121 transitions. [2018-10-25 01:51:36,138 INFO L78 Accepts]: Start accepts. Automaton has 45949 states and 50121 transitions. Word has length 765 [2018-10-25 01:51:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:51:36,139 INFO L481 AbstractCegarLoop]: Abstraction has 45949 states and 50121 transitions. [2018-10-25 01:51:36,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:51:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 45949 states and 50121 transitions. [2018-10-25 01:51:36,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2018-10-25 01:51:36,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:51:36,207 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:51:36,207 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:51:36,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:51:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1455468795, now seen corresponding path program 1 times [2018-10-25 01:51:36,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:51:36,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:36,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:51:36,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:51:36,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:51:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:51:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 594 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-10-25 01:51:36,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:51:36,946 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:51:36,946 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 792 with the following transitions: [2018-10-25 01:51:36,946 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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [660], [663], [667], [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], [1513], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:51:36,952 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:51:36,952 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 01:51:51,755 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 01:51:51,755 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 01:51:51,756 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 01:51:51,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:51:51,756 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:51:51,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:51:51,765 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:51:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:51:51,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:51:52,030 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:51:52,231 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:51:52,232 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:51:52,236 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:51:52,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:51:52 BoogieIcfgContainer [2018-10-25 01:51:52,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:51:52,240 INFO L168 Benchmark]: Toolchain (without parser) took 232969.72 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -184.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-25 01:51:52,241 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-25 01:51:52,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1327.34 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. [2018-10-25 01:51:52,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 421.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:52,245 INFO L168 Benchmark]: Boogie Preprocessor took 182.49 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:52,246 INFO L168 Benchmark]: RCFGBuilder took 8148.39 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: 309.9 MB). Peak memory consumption was 309.9 MB. Max. memory is 7.1 GB. [2018-10-25 01:51:52,247 INFO L168 Benchmark]: TraceAbstraction took 222883.99 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 266.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-25 01:51:52,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1327.34 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 421.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.0 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.49 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8148.39 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: 309.9 MB). Peak memory consumption was 309.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222883.99 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.6 GB in the end (delta: 266.6 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was analyzing trace of length 792 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 4 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 222.8s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 167.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4057 SDtfs, 18129 SDslu, 2866 SDs, 0 SdLazy, 31052 SolverSat, 7386 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 136.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5162 GetRequests, 5052 SyntacticMatches, 10 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46266occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 33.6s AbstIntTime, 8 AbstIntIterations, 1 AbstIntStrong, 0.9976245273713631 AbsIntWeakeningRatio, 0.10970464135021098 AbsIntAvgWeakeningVarsNumRemoved, 16.426160337552744 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 8134 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 6464 NumberOfCodeBlocks, 6464 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 8834 ConstructedInterpolants, 0 QuantifiedInterpolants, 7550493 SizeOfPredicates, 8 NumberOfNonLiveVariables, 3597 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 25 InterpolantComputations, 9 PerfectInterpolantSequences, 7283/7773 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown