java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 12:10:01,376 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 12:10:01,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 12:10:01,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 12:10:01,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 12:10:01,392 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 12:10:01,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 12:10:01,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 12:10:01,397 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 12:10:01,397 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 12:10:01,398 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 12:10:01,399 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 12:10:01,400 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 12:10:01,401 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 12:10:01,402 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 12:10:01,403 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 12:10:01,403 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 12:10:01,405 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 12:10:01,407 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 12:10:01,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 12:10:01,410 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 12:10:01,411 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 12:10:01,414 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 12:10:01,414 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 12:10:01,414 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 12:10:01,415 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 12:10:01,416 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 12:10:01,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 12:10:01,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 12:10:01,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 12:10:01,419 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 12:10:01,420 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-18 12:10:01,422 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 12:10:01,438 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 12:10:01,438 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 12:10:01,439 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 12:10:01,440 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 12:10:01,440 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 12:10:01,440 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 12:10:01,440 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 12:10:01,440 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 12:10:01,441 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 12:10:01,441 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 12:10:01,441 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 12:10:01,441 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 12:10:01,442 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 12:10:01,442 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 12:10:01,442 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 12:10:01,442 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 12:10:01,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 12:10:01,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 12:10:01,443 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 12:10:01,443 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 12:10:01,443 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 12:10:01,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 12:10:01,444 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 12:10:01,444 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 12:10:01,444 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 12:10:01,444 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 12:10:01,445 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 12:10:01,445 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 12:10:01,445 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 12:10:01,445 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 12:10:01,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 12:10:01,446 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 12:10:01,446 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 12:10:01,446 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 12:10:01,500 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 12:10:01,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 12:10:01,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 12:10:01,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 12:10:01,526 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 12:10:01,527 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-09-18 12:10:01,885 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52d32f03/5e5771d052af4a46b3b5fd6c7b394aa6/FLAGc1bad613b [2018-09-18 12:10:02,285 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 12:10:02,286 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-09-18 12:10:02,317 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52d32f03/5e5771d052af4a46b3b5fd6c7b394aa6/FLAGc1bad613b [2018-09-18 12:10:02,334 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d52d32f03/5e5771d052af4a46b3b5fd6c7b394aa6 [2018-09-18 12:10:02,344 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 12:10:02,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 12:10:02,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 12:10:02,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 12:10:02,356 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 12:10:02,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:10:02" (1/1) ... [2018-09-18 12:10:02,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7598abde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:02, skipping insertion in model container [2018-09-18 12:10:02,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:10:02" (1/1) ... [2018-09-18 12:10:02,381 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 12:10:03,339 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:10:03,359 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 12:10:03,731 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 12:10:03,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03 WrapperNode [2018-09-18 12:10:03,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 12:10:03,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 12:10:03,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 12:10:03,964 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 12:10:03,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:04,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:04,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 12:10:04,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 12:10:04,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 12:10:04,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 12:10:04,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:04,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:04,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:04,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:05,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:05,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:05,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... [2018-09-18 12:10:05,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 12:10:05,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 12:10:05,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 12:10:05,145 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 12:10:05,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:10:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 12:10:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 12:10:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 12:10:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 12:10:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 12:10:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 12:10:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 12:10:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 12:10:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 12:10:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 12:10:20,219 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 12:10:20,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:10:20 BoogieIcfgContainer [2018-09-18 12:10:20,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 12:10:20,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 12:10:20,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 12:10:20,225 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 12:10:20,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:10:02" (1/3) ... [2018-09-18 12:10:20,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a81c15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:10:20, skipping insertion in model container [2018-09-18 12:10:20,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:10:03" (2/3) ... [2018-09-18 12:10:20,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a81c15f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:10:20, skipping insertion in model container [2018-09-18 12:10:20,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:10:20" (3/3) ... [2018-09-18 12:10:20,229 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11_true-unreach-call.c [2018-09-18 12:10:20,236 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 12:10:20,245 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 12:10:20,299 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 12:10:20,300 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 12:10:20,300 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 12:10:20,300 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 12:10:20,300 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 12:10:20,300 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 12:10:20,301 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 12:10:20,301 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 12:10:20,301 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 12:10:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-18 12:10:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-18 12:10:20,354 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:20,356 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:10:20,357 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:20,362 INFO L82 PathProgramCache]: Analyzing trace with hash -492133930, now seen corresponding path program 1 times [2018-09-18 12:10:20,364 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:20,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:20,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:20,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:20,416 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:20,929 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:10:20,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 12:10:20,930 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:20,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 12:10:20,954 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 12:10:20,955 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:10:20,958 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-18 12:10:35,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:35,040 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-09-18 12:10:35,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 12:10:35,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-09-18 12:10:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:35,084 INFO L225 Difference]: With dead ends: 2164 [2018-09-18 12:10:35,084 INFO L226 Difference]: Without dead ends: 1554 [2018-09-18 12:10:35,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 12:10:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-09-18 12:10:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-09-18 12:10:35,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-09-18 12:10:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-09-18 12:10:35,248 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 63 [2018-09-18 12:10:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:35,249 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-09-18 12:10:35,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 12:10:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-09-18 12:10:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-18 12:10:35,260 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:35,260 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:10:35,260 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1696460921, now seen corresponding path program 1 times [2018-09-18 12:10:35,261 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:35,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:35,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:35,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:35,263 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:35,543 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 12:10:35,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 12:10:35,543 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:35,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:10:35,546 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:10:35,547 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 12:10:35,547 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-09-18 12:10:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:42,649 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-09-18 12:10:42,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:10:42,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-09-18 12:10:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:42,666 INFO L225 Difference]: With dead ends: 3031 [2018-09-18 12:10:42,666 INFO L226 Difference]: Without dead ends: 1985 [2018-09-18 12:10:42,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 12:10:42,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-09-18 12:10:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-09-18 12:10:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-09-18 12:10:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-09-18 12:10:42,758 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 135 [2018-09-18 12:10:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:42,761 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-09-18 12:10:42,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:10:42,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-09-18 12:10:42,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-18 12:10:42,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:42,775 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:10:42,775 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:42,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1297606689, now seen corresponding path program 1 times [2018-09-18 12:10:42,776 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:42,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:42,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:42,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:42,777 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:43,420 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-18 12:10:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:43,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:43,452 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:10:43,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:43,464 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:43,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:47,240 WARN L178 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 32 [2018-09-18 12:10:47,513 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:47,513 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:48,116 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:10:48,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-09-18 12:10:48,116 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:48,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:10:48,117 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:10:48,118 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-18 12:10:48,118 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 3 states. [2018-09-18 12:10:53,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:53,745 INFO L93 Difference]: Finished difference Result 5693 states and 9655 transitions. [2018-09-18 12:10:53,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:10:53,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2018-09-18 12:10:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:53,785 INFO L225 Difference]: With dead ends: 5693 [2018-09-18 12:10:53,785 INFO L226 Difference]: Without dead ends: 3740 [2018-09-18 12:10:53,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=31, Invalid=78, Unknown=1, NotChecked=0, Total=110 [2018-09-18 12:10:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2018-09-18 12:10:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3734. [2018-09-18 12:10:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3734 states. [2018-09-18 12:10:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6077 transitions. [2018-09-18 12:10:53,918 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6077 transitions. Word has length 138 [2018-09-18 12:10:53,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:53,919 INFO L480 AbstractCegarLoop]: Abstraction has 3734 states and 6077 transitions. [2018-09-18 12:10:53,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:10:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6077 transitions. [2018-09-18 12:10:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-09-18 12:10:53,930 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:53,930 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:10:53,931 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash -291330969, now seen corresponding path program 1 times [2018-09-18 12:10:53,931 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:53,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:53,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:53,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:53,932 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:54,250 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 12:10:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 12:10:54,371 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:54,371 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:10:54,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:54,383 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:54,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:54,560 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:54,561 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:10:54,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:10:54,813 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:10:54,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:54,830 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:10:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:10:54,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:10:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:10:55,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:10:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:10:55,638 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 12:10:55,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-18 12:10:55,639 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:10:55,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:10:55,641 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:10:55,641 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 12:10:55,642 INFO L87 Difference]: Start difference. First operand 3734 states and 6077 transitions. Second operand 5 states. [2018-09-18 12:10:59,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:10:59,527 INFO L93 Difference]: Finished difference Result 9265 states and 14928 transitions. [2018-09-18 12:10:59,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 12:10:59,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 235 [2018-09-18 12:10:59,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:10:59,554 INFO L225 Difference]: With dead ends: 9265 [2018-09-18 12:10:59,554 INFO L226 Difference]: Without dead ends: 5537 [2018-09-18 12:10:59,572 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 930 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:10:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5537 states. [2018-09-18 12:10:59,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5537 to 5537. [2018-09-18 12:10:59,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5537 states. [2018-09-18 12:10:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 7653 transitions. [2018-09-18 12:10:59,705 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 7653 transitions. Word has length 235 [2018-09-18 12:10:59,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:10:59,705 INFO L480 AbstractCegarLoop]: Abstraction has 5537 states and 7653 transitions. [2018-09-18 12:10:59,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:10:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 7653 transitions. [2018-09-18 12:10:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-09-18 12:10:59,713 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:10:59,713 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 12:10:59,713 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:10:59,714 INFO L82 PathProgramCache]: Analyzing trace with hash 237359883, now seen corresponding path program 1 times [2018-09-18 12:10:59,714 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:10:59,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:59,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:10:59,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:10:59,715 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:10:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 115 proven. 61 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-09-18 12:11:00,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:00,645 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:11:00,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:00,653 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:00,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:01,014 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 12:11:01,015 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:01,226 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-09-18 12:11:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 112 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:11:01,808 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:11:01,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-18 12:11:01,808 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:11:01,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 12:11:01,809 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 12:11:01,809 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-18 12:11:01,810 INFO L87 Difference]: Start difference. First operand 5537 states and 7653 transitions. Second operand 5 states. [2018-09-18 12:11:13,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:13,581 INFO L93 Difference]: Finished difference Result 15619 states and 21606 transitions. [2018-09-18 12:11:13,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 12:11:13,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2018-09-18 12:11:13,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:13,621 INFO L225 Difference]: With dead ends: 15619 [2018-09-18 12:11:13,621 INFO L226 Difference]: Without dead ends: 9205 [2018-09-18 12:11:13,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 487 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2018-09-18 12:11:13,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9205 states. [2018-09-18 12:11:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9205 to 8085. [2018-09-18 12:11:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8085 states. [2018-09-18 12:11:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8085 states to 8085 states and 10557 transitions. [2018-09-18 12:11:13,855 INFO L78 Accepts]: Start accepts. Automaton has 8085 states and 10557 transitions. Word has length 245 [2018-09-18 12:11:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:13,855 INFO L480 AbstractCegarLoop]: Abstraction has 8085 states and 10557 transitions. [2018-09-18 12:11:13,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 12:11:13,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8085 states and 10557 transitions. [2018-09-18 12:11:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-09-18 12:11:13,868 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:13,869 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:11:13,869 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:13,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1387535594, now seen corresponding path program 1 times [2018-09-18 12:11:13,869 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:13,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:13,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:13,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:13,871 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:13,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 12:11:14,498 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:14,498 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:11:14,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:14,515 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:14,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 12:11:14,961 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 246 proven. 71 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-18 12:11:15,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:15,588 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:11:15,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:15,605 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:15,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-18 12:11:15,957 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 176 proven. 134 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-09-18 12:11:16,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:11:16,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 12:11:16,531 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:11:16,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 12:11:16,532 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 12:11:16,533 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-09-18 12:11:16,533 INFO L87 Difference]: Start difference. First operand 8085 states and 10557 transitions. Second operand 9 states. [2018-09-18 12:11:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:11:43,765 INFO L93 Difference]: Finished difference Result 27096 states and 37937 transitions. [2018-09-18 12:11:43,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-18 12:11:43,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 320 [2018-09-18 12:11:43,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:11:43,866 INFO L225 Difference]: With dead ends: 27096 [2018-09-18 12:11:43,867 INFO L226 Difference]: Without dead ends: 16315 [2018-09-18 12:11:43,981 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1290 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=359, Invalid=1201, Unknown=0, NotChecked=0, Total=1560 [2018-09-18 12:11:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16315 states. [2018-09-18 12:11:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16315 to 16270. [2018-09-18 12:11:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16270 states. [2018-09-18 12:11:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16270 states to 16270 states and 19288 transitions. [2018-09-18 12:11:44,413 INFO L78 Accepts]: Start accepts. Automaton has 16270 states and 19288 transitions. Word has length 320 [2018-09-18 12:11:44,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:11:44,414 INFO L480 AbstractCegarLoop]: Abstraction has 16270 states and 19288 transitions. [2018-09-18 12:11:44,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 12:11:44,414 INFO L276 IsEmpty]: Start isEmpty. Operand 16270 states and 19288 transitions. [2018-09-18 12:11:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-18 12:11:44,429 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:11:44,429 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:11:44,429 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:11:44,430 INFO L82 PathProgramCache]: Analyzing trace with hash -709158672, now seen corresponding path program 1 times [2018-09-18 12:11:44,430 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:11:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:44,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:11:44,431 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:11:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 180 proven. 225 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:11:45,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:45,398 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-09-18 12:11:45,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:45,409 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:45,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:46,120 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 21 [2018-09-18 12:11:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 12:11:46,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:46,700 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-09-18 12:11:47,647 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-09-18 12:11:47,650 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 12:11:47,967 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-09-18 12:11:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 174 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:11:48,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:11:48,952 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:11:48,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:11:48,973 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:11:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:11:49,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:11:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-09-18 12:11:49,542 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:11:50,051 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-18 12:11:50,269 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-09-18 12:11:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 174 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 12:11:51,061 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:11:51,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8, 8, 8] total 26 [2018-09-18 12:11:51,062 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:11:51,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 12:11:51,063 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 12:11:51,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2018-09-18 12:11:51,064 INFO L87 Difference]: Start difference. First operand 16270 states and 19288 transitions. Second operand 15 states. [2018-09-18 12:12:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:12:20,682 INFO L93 Difference]: Finished difference Result 43784 states and 55426 transitions. [2018-09-18 12:12:20,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-18 12:12:20,683 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 338 [2018-09-18 12:12:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:12:20,833 INFO L225 Difference]: With dead ends: 43784 [2018-09-18 12:12:20,834 INFO L226 Difference]: Without dead ends: 27094 [2018-09-18 12:12:20,895 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1453 GetRequests, 1370 SyntacticMatches, 10 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1116, Invalid=4434, Unknown=0, NotChecked=0, Total=5550 [2018-09-18 12:12:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27094 states. [2018-09-18 12:12:21,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27094 to 26661. [2018-09-18 12:12:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26661 states. [2018-09-18 12:12:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26661 states to 26661 states and 31891 transitions. [2018-09-18 12:12:21,575 INFO L78 Accepts]: Start accepts. Automaton has 26661 states and 31891 transitions. Word has length 338 [2018-09-18 12:12:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:12:21,575 INFO L480 AbstractCegarLoop]: Abstraction has 26661 states and 31891 transitions. [2018-09-18 12:12:21,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 12:12:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand 26661 states and 31891 transitions. [2018-09-18 12:12:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-18 12:12:21,594 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:12:21,595 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:12:21,595 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:12:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1877965642, now seen corresponding path program 1 times [2018-09-18 12:12:21,596 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:12:21,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:12:21,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:21,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:12:21,597 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:12:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:22,330 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 17 [2018-09-18 12:12:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:12:22,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:12:22,708 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:12:22,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:12:22,716 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:12:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:12:22,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:12:25,168 WARN L178 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 38 [2018-09-18 12:12:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:12:25,334 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:12:27,587 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 [2018-09-18 12:12:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 12:12:31,667 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:12:31,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-18 12:12:31,667 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:12:31,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 12:12:31,669 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 12:12:31,669 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=108, Unknown=2, NotChecked=0, Total=156 [2018-09-18 12:12:31,669 INFO L87 Difference]: Start difference. First operand 26661 states and 31891 transitions. Second operand 6 states. [2018-09-18 12:13:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:13:01,694 INFO L93 Difference]: Finished difference Result 66867 states and 80084 transitions. [2018-09-18 12:13:01,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 12:13:01,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 411 [2018-09-18 12:13:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:13:01,825 INFO L225 Difference]: With dead ends: 66867 [2018-09-18 12:13:01,825 INFO L226 Difference]: Without dead ends: 37559 [2018-09-18 12:13:01,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 816 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=53, Invalid=127, Unknown=2, NotChecked=0, Total=182 [2018-09-18 12:13:01,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37559 states. [2018-09-18 12:13:02,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37559 to 36665. [2018-09-18 12:13:02,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36665 states. [2018-09-18 12:13:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36665 states to 36665 states and 43763 transitions. [2018-09-18 12:13:02,639 INFO L78 Accepts]: Start accepts. Automaton has 36665 states and 43763 transitions. Word has length 411 [2018-09-18 12:13:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:13:02,640 INFO L480 AbstractCegarLoop]: Abstraction has 36665 states and 43763 transitions. [2018-09-18 12:13:02,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 12:13:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 36665 states and 43763 transitions. [2018-09-18 12:13:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-09-18 12:13:02,671 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:13:02,671 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-09-18 12:13:02,675 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:13:02,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1258249865, now seen corresponding path program 1 times [2018-09-18 12:13:02,676 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:13:02,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:02,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:02,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:02,677 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:13:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-09-18 12:13:03,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:03,400 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:13:03,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:03,414 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:03,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-09-18 12:13:03,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 246 proven. 8 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-18 12:13:04,316 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 12:13:04,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-09-18 12:13:04,316 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:13:04,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:13:04,317 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:13:04,317 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:13:04,318 INFO L87 Difference]: Start difference. First operand 36665 states and 43763 transitions. Second operand 3 states. [2018-09-18 12:13:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:13:07,976 INFO L93 Difference]: Finished difference Result 71094 states and 84836 transitions. [2018-09-18 12:13:07,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:13:07,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-09-18 12:13:07,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:13:08,101 INFO L225 Difference]: With dead ends: 71094 [2018-09-18 12:13:08,101 INFO L226 Difference]: Without dead ends: 34866 [2018-09-18 12:13:08,176 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 930 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 12:13:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34866 states. [2018-09-18 12:13:08,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34866 to 34862. [2018-09-18 12:13:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34862 states. [2018-09-18 12:13:08,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34862 states to 34862 states and 41307 transitions. [2018-09-18 12:13:08,852 INFO L78 Accepts]: Start accepts. Automaton has 34862 states and 41307 transitions. Word has length 467 [2018-09-18 12:13:08,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:13:08,852 INFO L480 AbstractCegarLoop]: Abstraction has 34862 states and 41307 transitions. [2018-09-18 12:13:08,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:13:08,853 INFO L276 IsEmpty]: Start isEmpty. Operand 34862 states and 41307 transitions. [2018-09-18 12:13:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2018-09-18 12:13:08,881 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:13:08,882 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:13:08,882 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:13:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash -404401180, now seen corresponding path program 1 times [2018-09-18 12:13:08,883 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:13:08,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:08,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:08,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:08,884 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:13:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:10,341 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 166 proven. 180 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2018-09-18 12:13:10,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:10,342 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:13:10,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:10,356 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:10,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:13:10,970 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 12:13:11,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:11,370 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:13:11,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:11,386 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:11,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:11,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:12,014 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-09-18 12:13:12,014 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2018-09-18 12:13:12,257 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-18 12:13:12,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8, 6, 6] total 14 [2018-09-18 12:13:12,258 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 12:13:12,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 12:13:12,259 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 12:13:12,259 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:13:12,259 INFO L87 Difference]: Start difference. First operand 34862 states and 41307 transitions. Second operand 3 states. [2018-09-18 12:13:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:13:14,977 INFO L93 Difference]: Finished difference Result 68448 states and 81324 transitions. [2018-09-18 12:13:14,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 12:13:14,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 487 [2018-09-18 12:13:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:13:15,089 INFO L225 Difference]: With dead ends: 68448 [2018-09-18 12:13:15,090 INFO L226 Difference]: Without dead ends: 34026 [2018-09-18 12:13:15,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1957 GetRequests, 1939 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2018-09-18 12:13:15,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34026 states. [2018-09-18 12:13:15,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34026 to 32303. [2018-09-18 12:13:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32303 states. [2018-09-18 12:13:15,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32303 states to 32303 states and 38274 transitions. [2018-09-18 12:13:15,758 INFO L78 Accepts]: Start accepts. Automaton has 32303 states and 38274 transitions. Word has length 487 [2018-09-18 12:13:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:13:15,759 INFO L480 AbstractCegarLoop]: Abstraction has 32303 states and 38274 transitions. [2018-09-18 12:13:15,759 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 12:13:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 32303 states and 38274 transitions. [2018-09-18 12:13:15,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-09-18 12:13:15,778 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:13:15,779 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:13:15,779 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:13:15,779 INFO L82 PathProgramCache]: Analyzing trace with hash -498758136, now seen corresponding path program 1 times [2018-09-18 12:13:15,779 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:13:15,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:15,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:15,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:15,780 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:13:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 235 proven. 326 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-09-18 12:13:16,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:16,351 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:13:16,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:16,360 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:16,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 580 proven. 2 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-09-18 12:13:16,979 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 431 proven. 71 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2018-09-18 12:13:17,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:17,300 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:13:17,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:17,316 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:17,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:18,151 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 25 [2018-09-18 12:13:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 387 proven. 59 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:13:19,781 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:20,369 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 25 [2018-09-18 12:13:20,555 INFO L134 CoverageAnalysis]: Checked inductivity of 724 backedges. 444 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-09-18 12:13:20,558 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:13:20,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 7, 7] total 21 [2018-09-18 12:13:20,558 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:13:20,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 12:13:20,559 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 12:13:20,559 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2018-09-18 12:13:20,560 INFO L87 Difference]: Start difference. First operand 32303 states and 38274 transitions. Second operand 10 states. [2018-09-18 12:13:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 12:13:55,252 INFO L93 Difference]: Finished difference Result 88675 states and 108356 transitions. [2018-09-18 12:13:55,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-18 12:13:55,252 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 498 [2018-09-18 12:13:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 12:13:55,424 INFO L225 Difference]: With dead ends: 88675 [2018-09-18 12:13:55,424 INFO L226 Difference]: Without dead ends: 48486 [2018-09-18 12:13:55,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 2015 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=608, Invalid=3052, Unknown=0, NotChecked=0, Total=3660 [2018-09-18 12:13:55,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48486 states. [2018-09-18 12:13:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48486 to 44643. [2018-09-18 12:13:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44643 states. [2018-09-18 12:13:56,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44643 states to 44643 states and 53049 transitions. [2018-09-18 12:13:56,424 INFO L78 Accepts]: Start accepts. Automaton has 44643 states and 53049 transitions. Word has length 498 [2018-09-18 12:13:56,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 12:13:56,425 INFO L480 AbstractCegarLoop]: Abstraction has 44643 states and 53049 transitions. [2018-09-18 12:13:56,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 12:13:56,425 INFO L276 IsEmpty]: Start isEmpty. Operand 44643 states and 53049 transitions. [2018-09-18 12:13:56,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-09-18 12:13:56,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 12:13:56,451 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 12:13:56,451 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 12:13:56,452 INFO L82 PathProgramCache]: Analyzing trace with hash -390856029, now seen corresponding path program 1 times [2018-09-18 12:13:56,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 12:13:56,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:56,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:56,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 12:13:56,453 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 12:13:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:57,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 596 proven. 71 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-09-18 12:13:57,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:57,295 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 12:13:57,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:57,305 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:57,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 812 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-09-18 12:13:58,087 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:58,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 596 proven. 71 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-09-18 12:13:58,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 12:13:58,567 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 12:13:58,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 12:13:58,586 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 12:13:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 12:13:58,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 12:13:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 812 proven. 2 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2018-09-18 12:13:59,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 12:13:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 596 proven. 71 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2018-09-18 12:13:59,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 12:13:59,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 10 [2018-09-18 12:13:59,611 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 12:13:59,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 12:13:59,612 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 12:13:59,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-09-18 12:13:59,613 INFO L87 Difference]: Start difference. First operand 44643 states and 53049 transitions. Second operand 8 states. Received shutdown request... [2018-09-18 12:14:01,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 12:14:01,500 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 12:14:01,506 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 12:14:01,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:14:01 BoogieIcfgContainer [2018-09-18 12:14:01,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 12:14:01,508 INFO L168 Benchmark]: Toolchain (without parser) took 239163.27 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 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 335.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:14:01,509 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-09-18 12:14:01,509 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1613.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-18 12:14:01,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 313.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 12:14:01,511 INFO L168 Benchmark]: Boogie Preprocessor took 867.25 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 937.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-18 12:14:01,512 INFO L168 Benchmark]: RCFGBuilder took 15076.36 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 442.2 MB). Peak memory consumption was 442.2 MB. Max. memory is 7.1 GB. [2018-09-18 12:14:01,513 INFO L168 Benchmark]: TraceAbstraction took 221285.29 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 12:14:01,517 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1613.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 313.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 867.25 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 937.4 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15076.36 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 442.2 MB). Peak memory consumption was 442.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221285.29 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.9 GB in the beginning and 3.6 GB in the end (delta: -1.7 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 176). Cancelled while BasicCegarLoop was constructing difference of abstraction (44643states) and FLOYD_HOARE automaton (currently 9 states, 8 states before enhancement), while ReachableStatesComputation was computing reachable states (895 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 221.2s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 173.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3249 SDtfs, 27378 SDslu, 3482 SDs, 0 SdLazy, 51491 SolverSat, 9887 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 153.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12741 GetRequests, 12448 SyntacticMatches, 42 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 25.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44643occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 8596 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 35.8s InterpolantComputationTime, 10151 NumberOfCodeBlocks, 10151 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 16322 ConstructedInterpolants, 678 QuantifiedInterpolants, 30350535 SizeOfPredicates, 41 NumberOfNonLiveVariables, 9928 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 44 InterpolantComputations, 9 PerfectInterpolantSequences, 17606/19736 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_12-14-01-536.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label11_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_12-14-01-536.csv Completed graceful shutdown