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/Problem03_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:10:25,333 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:10:25,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:10:25,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:10:25,350 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:10:25,351 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:10:25,353 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:10:25,355 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:10:25,357 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:10:25,359 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:10:25,361 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:10:25,361 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:10:25,362 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:10:25,363 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:10:25,364 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:10:25,365 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:10:25,366 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:10:25,367 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:10:25,369 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:10:25,371 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:10:25,372 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:10:25,373 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:10:25,376 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:10:25,376 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:10:25,376 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:10:25,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:10:25,378 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:10:25,379 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:10:25,380 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:10:25,381 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:10:25,381 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:10:25,382 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 10:10:25,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 10:10:25,382 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 10:10:25,383 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 10:10:25,384 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 10:10:25,385 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 10:10:25,413 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:10:25,414 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:10:25,415 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:10:25,415 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:10:25,415 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:10:25,415 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:10:25,416 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:10:25,416 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:10:25,416 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:10:25,416 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:10:25,417 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:10:25,417 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:10:25,418 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:10:25,418 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:10:25,418 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:10:25,418 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:10:25,418 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:10:25,419 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:10:25,419 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:10:25,419 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:10:25,419 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:10:25,421 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:10:25,421 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:10:25,421 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:10:25,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:10:25,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:10:25,422 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:10:25,422 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:10:25,423 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:10:25,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:10:25,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:10:25,423 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:10:25,423 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:10:25,423 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:10:25,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:10:25,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:10:25,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:10:25,498 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:10:25,498 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:10:25,499 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-09-18 10:10:25,857 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6357161b7/b0065f490c0945ba978fc463694e67a4/FLAG199f6739e [2018-09-18 10:10:26,161 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:10:26,165 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label04_true-unreach-call.c [2018-09-18 10:10:26,189 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6357161b7/b0065f490c0945ba978fc463694e67a4/FLAG199f6739e [2018-09-18 10:10:26,210 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6357161b7/b0065f490c0945ba978fc463694e67a4 [2018-09-18 10:10:26,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:10:26,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:10:26,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:10:26,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:10:26,235 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:10:26,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:10:26" (1/1) ... [2018-09-18 10:10:26,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aabe07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:26, skipping insertion in model container [2018-09-18 10:10:26,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:10:26" (1/1) ... [2018-09-18 10:10:26,252 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:10:27,011 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:10:27,030 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:10:27,245 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:10:27,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27 WrapperNode [2018-09-18 10:10:27,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:10:27,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:10:27,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:10:27,313 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:10:27,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:10:27,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:10:27,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:10:27,486 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:10:27,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (1/1) ... [2018-09-18 10:10:27,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:10:27,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:10:27,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:10:27,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:10:27,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (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 10:10:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:10:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:10:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 10:10:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 10:10:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:10:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:10:27,951 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:10:27,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:10:32,595 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:10:32,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:10:32 BoogieIcfgContainer [2018-09-18 10:10:32,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:10:32,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:10:32,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:10:32,600 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:10:32,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:10:26" (1/3) ... [2018-09-18 10:10:32,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2036ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:10:32, skipping insertion in model container [2018-09-18 10:10:32,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:10:27" (2/3) ... [2018-09-18 10:10:32,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2036ccc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:10:32, skipping insertion in model container [2018-09-18 10:10:32,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:10:32" (3/3) ... [2018-09-18 10:10:32,604 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label04_true-unreach-call.c [2018-09-18 10:10:32,615 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:10:32,625 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:10:32,685 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:10:32,688 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:10:32,688 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:10:32,688 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:10:32,688 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:10:32,688 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:10:32,689 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:10:32,689 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:10:32,689 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:10:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-09-18 10:10:32,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-09-18 10:10:32,753 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:10:32,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:10:32,759 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:10:32,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1740554548, now seen corresponding path program 1 times [2018-09-18 10:10:32,769 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:10:32,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:32,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:32,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:32,833 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:10:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:10:34,026 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 10:10:34,028 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:10:34,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 10:10:34,028 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:10:34,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 10:10:34,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 10:10:34,050 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:10:34,053 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-09-18 10:10:37,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:10:37,382 INFO L93 Difference]: Finished difference Result 1057 states and 1905 transitions. [2018-09-18 10:10:37,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 10:10:37,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-09-18 10:10:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:10:37,476 INFO L225 Difference]: With dead ends: 1057 [2018-09-18 10:10:37,476 INFO L226 Difference]: Without dead ends: 739 [2018-09-18 10:10:37,484 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 10:10:37,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2018-09-18 10:10:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 528. [2018-09-18 10:10:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2018-09-18 10:10:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 879 transitions. [2018-09-18 10:10:37,600 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 879 transitions. Word has length 205 [2018-09-18 10:10:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:10:37,601 INFO L480 AbstractCegarLoop]: Abstraction has 528 states and 879 transitions. [2018-09-18 10:10:37,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 10:10:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 879 transitions. [2018-09-18 10:10:37,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-18 10:10:37,612 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:10:37,613 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:10:37,614 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:10:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1550134832, now seen corresponding path program 1 times [2018-09-18 10:10:37,615 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:10:37,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:37,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:37,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:37,617 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:10:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:10:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:38,061 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:10:38,061 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:10:38,062 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:10:38,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:10:38,064 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:10:38,064 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:10:38,065 INFO L87 Difference]: Start difference. First operand 528 states and 879 transitions. Second operand 3 states. [2018-09-18 10:10:40,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:10:40,173 INFO L93 Difference]: Finished difference Result 1482 states and 2549 transitions. [2018-09-18 10:10:40,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:10:40,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-09-18 10:10:40,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:10:40,182 INFO L225 Difference]: With dead ends: 1482 [2018-09-18 10:10:40,183 INFO L226 Difference]: Without dead ends: 960 [2018-09-18 10:10:40,186 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:10:40,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2018-09-18 10:10:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 946. [2018-09-18 10:10:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-09-18 10:10:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1557 transitions. [2018-09-18 10:10:40,227 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1557 transitions. Word has length 218 [2018-09-18 10:10:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:10:40,228 INFO L480 AbstractCegarLoop]: Abstraction has 946 states and 1557 transitions. [2018-09-18 10:10:40,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:10:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1557 transitions. [2018-09-18 10:10:40,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-09-18 10:10:40,235 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:10:40,235 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 10:10:40,235 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:10:40,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1141936112, now seen corresponding path program 1 times [2018-09-18 10:10:40,236 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:10:40,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:40,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:40,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:40,237 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:10:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:10:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:40,733 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:10:40,733 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 10:10:40,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:40,751 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:10:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:10:40,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:10:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:41,391 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:10:41,565 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 10:10:41,791 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:41,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:10:41,822 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 3 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 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:10:41,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:41,839 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:10:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:10:42,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:10:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:42,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:10:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:42,625 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:10:42,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 18 [2018-09-18 10:10:42,628 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:10:42,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:10:42,630 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:10:42,630 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:10:42,631 INFO L87 Difference]: Start difference. First operand 946 states and 1557 transitions. Second operand 9 states. [2018-09-18 10:10:43,616 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-09-18 10:10:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:10:56,125 INFO L93 Difference]: Finished difference Result 9199 states and 19706 transitions. [2018-09-18 10:10:56,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-18 10:10:56,126 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 229 [2018-09-18 10:10:56,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:10:56,237 INFO L225 Difference]: With dead ends: 9199 [2018-09-18 10:10:56,237 INFO L226 Difference]: Without dead ends: 8259 [2018-09-18 10:10:56,278 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2018-09-18 10:10:56,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2018-09-18 10:10:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 7890. [2018-09-18 10:10:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7890 states. [2018-09-18 10:10:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7890 states to 7890 states and 12605 transitions. [2018-09-18 10:10:56,707 INFO L78 Accepts]: Start accepts. Automaton has 7890 states and 12605 transitions. Word has length 229 [2018-09-18 10:10:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:10:56,707 INFO L480 AbstractCegarLoop]: Abstraction has 7890 states and 12605 transitions. [2018-09-18 10:10:56,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:10:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7890 states and 12605 transitions. [2018-09-18 10:10:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-18 10:10:56,758 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:10:56,758 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-18 10:10:56,758 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:10:56,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2142055738, now seen corresponding path program 1 times [2018-09-18 10:10:56,759 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:10:56,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:56,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:56,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:56,760 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:10:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:10:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:10:57,047 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:10:57,047 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:10:57,047 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:10:57,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:10:57,048 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:10:57,048 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:10:57,048 INFO L87 Difference]: Start difference. First operand 7890 states and 12605 transitions. Second operand 6 states. [2018-09-18 10:10:59,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:10:59,232 INFO L93 Difference]: Finished difference Result 13791 states and 22807 transitions. [2018-09-18 10:10:59,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:10:59,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 230 [2018-09-18 10:10:59,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:10:59,304 INFO L225 Difference]: With dead ends: 13791 [2018-09-18 10:10:59,304 INFO L226 Difference]: Without dead ends: 8507 [2018-09-18 10:10:59,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:10:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8507 states. [2018-09-18 10:10:59,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8507 to 8337. [2018-09-18 10:10:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8337 states. [2018-09-18 10:10:59,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8337 states to 8337 states and 12690 transitions. [2018-09-18 10:10:59,659 INFO L78 Accepts]: Start accepts. Automaton has 8337 states and 12690 transitions. Word has length 230 [2018-09-18 10:10:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:10:59,659 INFO L480 AbstractCegarLoop]: Abstraction has 8337 states and 12690 transitions. [2018-09-18 10:10:59,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:10:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 8337 states and 12690 transitions. [2018-09-18 10:10:59,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-09-18 10:10:59,718 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:10:59,719 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, 2, 2, 2, 2, 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] [2018-09-18 10:10:59,719 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:10:59,720 INFO L82 PathProgramCache]: Analyzing trace with hash -731091438, now seen corresponding path program 1 times [2018-09-18 10:10:59,720 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:10:59,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:59,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:10:59,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:10:59,721 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:10:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:00,098 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:11:00,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 10:11:00,099 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:00,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:11:00,099 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:11:00,100 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 10:11:00,100 INFO L87 Difference]: Start difference. First operand 8337 states and 12690 transitions. Second operand 6 states. [2018-09-18 10:11:02,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:02,797 INFO L93 Difference]: Finished difference Result 18473 states and 29031 transitions. [2018-09-18 10:11:02,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:11:02,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 292 [2018-09-18 10:11:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:02,853 INFO L225 Difference]: With dead ends: 18473 [2018-09-18 10:11:02,853 INFO L226 Difference]: Without dead ends: 10152 [2018-09-18 10:11:02,882 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:11:02,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10152 states. [2018-09-18 10:11:03,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10152 to 10025. [2018-09-18 10:11:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10025 states. [2018-09-18 10:11:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10025 states to 10025 states and 14397 transitions. [2018-09-18 10:11:03,189 INFO L78 Accepts]: Start accepts. Automaton has 10025 states and 14397 transitions. Word has length 292 [2018-09-18 10:11:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:03,190 INFO L480 AbstractCegarLoop]: Abstraction has 10025 states and 14397 transitions. [2018-09-18 10:11:03,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:11:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 10025 states and 14397 transitions. [2018-09-18 10:11:03,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-09-18 10:11:03,243 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:03,243 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, 2, 2, 2, 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] [2018-09-18 10:11:03,243 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:03,244 INFO L82 PathProgramCache]: Analyzing trace with hash 490182653, now seen corresponding path program 1 times [2018-09-18 10:11:03,244 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:03,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:03,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:03,245 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:03,541 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:11:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:03,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:03,978 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:11:03,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:03,995 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:04,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 10:11:04,651 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:05,566 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:11:05,567 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:11:05,567 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:05,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:11:05,568 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:11:05,568 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:11:05,569 INFO L87 Difference]: Start difference. First operand 10025 states and 14397 transitions. Second operand 5 states. [2018-09-18 10:11:08,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:08,488 INFO L93 Difference]: Finished difference Result 26942 states and 38884 transitions. [2018-09-18 10:11:08,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:11:08,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2018-09-18 10:11:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:08,585 INFO L225 Difference]: With dead ends: 26942 [2018-09-18 10:11:08,585 INFO L226 Difference]: Without dead ends: 16983 [2018-09-18 10:11:08,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 592 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:11:08,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16983 states. [2018-09-18 10:11:09,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16983 to 16345. [2018-09-18 10:11:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16345 states. [2018-09-18 10:11:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16345 states to 16345 states and 22869 transitions. [2018-09-18 10:11:09,334 INFO L78 Accepts]: Start accepts. Automaton has 16345 states and 22869 transitions. Word has length 299 [2018-09-18 10:11:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:09,334 INFO L480 AbstractCegarLoop]: Abstraction has 16345 states and 22869 transitions. [2018-09-18 10:11:09,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:11:09,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16345 states and 22869 transitions. [2018-09-18 10:11:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-09-18 10:11:09,385 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:09,385 INFO L376 BasicCegarLoop]: trace histogram [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, 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] [2018-09-18 10:11:09,386 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash 60834809, now seen corresponding path program 1 times [2018-09-18 10:11:09,386 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:09,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:09,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:09,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:09,387 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:10,033 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-18 10:11:10,269 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 114 proven. 34 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:11:10,270 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:10,270 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 10:11:10,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:10,279 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:10,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:10,735 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 10:11:10,735 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 10:11:11,028 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 10:11:11,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 10:11:11,029 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:11,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:11:11,030 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:11:11,030 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:11:11,032 INFO L87 Difference]: Start difference. First operand 16345 states and 22869 transitions. Second operand 3 states. [2018-09-18 10:11:12,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:12,962 INFO L93 Difference]: Finished difference Result 47329 states and 66708 transitions. [2018-09-18 10:11:12,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:11:12,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2018-09-18 10:11:12,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:13,074 INFO L225 Difference]: With dead ends: 47329 [2018-09-18 10:11:13,074 INFO L226 Difference]: Without dead ends: 30995 [2018-09-18 10:11:13,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 622 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:11:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30995 states. [2018-09-18 10:11:14,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30995 to 30989. [2018-09-18 10:11:14,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30989 states. [2018-09-18 10:11:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30989 states to 30989 states and 41885 transitions. [2018-09-18 10:11:14,226 INFO L78 Accepts]: Start accepts. Automaton has 30989 states and 41885 transitions. Word has length 312 [2018-09-18 10:11:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:14,227 INFO L480 AbstractCegarLoop]: Abstraction has 30989 states and 41885 transitions. [2018-09-18 10:11:14,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:11:14,227 INFO L276 IsEmpty]: Start isEmpty. Operand 30989 states and 41885 transitions. [2018-09-18 10:11:14,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-18 10:11:14,301 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:14,301 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:11:14,301 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:14,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1233071546, now seen corresponding path program 1 times [2018-09-18 10:11:14,302 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:14,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:14,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:14,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:14,303 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 130 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-09-18 10:11:14,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:14,775 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 10:11:14,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:14,785 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:15,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-09-18 10:11:15,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 114 proven. 16 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-09-18 10:11:15,254 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:11:15,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 10:11:15,254 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:15,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:11:15,255 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:11:15,255 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:11:15,256 INFO L87 Difference]: Start difference. First operand 30989 states and 41885 transitions. Second operand 5 states. [2018-09-18 10:11:17,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:17,947 INFO L93 Difference]: Finished difference Result 82306 states and 116882 transitions. [2018-09-18 10:11:17,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:11:17,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2018-09-18 10:11:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:18,202 INFO L225 Difference]: With dead ends: 82306 [2018-09-18 10:11:18,202 INFO L226 Difference]: Without dead ends: 51378 [2018-09-18 10:11:18,309 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:11:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51378 states. [2018-09-18 10:11:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51378 to 50210. [2018-09-18 10:11:20,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50210 states. [2018-09-18 10:11:20,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50210 states to 50210 states and 66925 transitions. [2018-09-18 10:11:20,150 INFO L78 Accepts]: Start accepts. Automaton has 50210 states and 66925 transitions. Word has length 330 [2018-09-18 10:11:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:20,151 INFO L480 AbstractCegarLoop]: Abstraction has 50210 states and 66925 transitions. [2018-09-18 10:11:20,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:11:20,151 INFO L276 IsEmpty]: Start isEmpty. Operand 50210 states and 66925 transitions. [2018-09-18 10:11:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-09-18 10:11:20,249 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:20,249 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:11:20,250 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:20,250 INFO L82 PathProgramCache]: Analyzing trace with hash -2134681585, now seen corresponding path program 1 times [2018-09-18 10:11:20,250 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:20,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:20,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:20,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:20,251 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-18 10:11:20,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:20,790 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:11:20,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:20,798 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:21,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:21,095 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-18 10:11:21,280 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:21,280 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:11:21,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:21,296 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:21,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 84 proven. 21 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:21,947 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 148 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:22,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:11:22,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 7, 8] total 12 [2018-09-18 10:11:22,550 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:11:22,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:11:22,551 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:11:22,551 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:11:22,552 INFO L87 Difference]: Start difference. First operand 50210 states and 66925 transitions. Second operand 6 states. [2018-09-18 10:11:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:23,934 INFO L93 Difference]: Finished difference Result 97026 states and 128862 transitions. [2018-09-18 10:11:23,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:11:23,934 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 339 [2018-09-18 10:11:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:24,072 INFO L225 Difference]: With dead ends: 97026 [2018-09-18 10:11:24,072 INFO L226 Difference]: Without dead ends: 46917 [2018-09-18 10:11:24,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1362 GetRequests, 1346 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:11:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46917 states. [2018-09-18 10:11:24,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46917 to 46917. [2018-09-18 10:11:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46917 states. [2018-09-18 10:11:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46917 states to 46917 states and 61447 transitions. [2018-09-18 10:11:25,125 INFO L78 Accepts]: Start accepts. Automaton has 46917 states and 61447 transitions. Word has length 339 [2018-09-18 10:11:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:25,126 INFO L480 AbstractCegarLoop]: Abstraction has 46917 states and 61447 transitions. [2018-09-18 10:11:25,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:11:25,126 INFO L276 IsEmpty]: Start isEmpty. Operand 46917 states and 61447 transitions. [2018-09-18 10:11:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-18 10:11:25,235 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:25,235 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:25,236 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash -770166786, now seen corresponding path program 1 times [2018-09-18 10:11:25,236 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:25,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:25,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:25,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:25,237 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:25,660 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 10:11:26,397 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 157 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:26,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:26,398 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:11:26,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:26,412 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:26,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:27,284 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:27,734 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-09-18 10:11:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 157 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:27,975 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:11:27,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-09-18 10:11:27,976 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:27,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:11:27,977 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:11:27,977 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-09-18 10:11:27,977 INFO L87 Difference]: Start difference. First operand 46917 states and 61447 transitions. Second operand 6 states. [2018-09-18 10:11:31,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:31,294 INFO L93 Difference]: Finished difference Result 95874 states and 126835 transitions. [2018-09-18 10:11:31,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 10:11:31,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 370 [2018-09-18 10:11:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:31,500 INFO L225 Difference]: With dead ends: 95874 [2018-09-18 10:11:31,501 INFO L226 Difference]: Without dead ends: 48739 [2018-09-18 10:11:31,587 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 732 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-09-18 10:11:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48739 states. [2018-09-18 10:11:32,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48739 to 47437. [2018-09-18 10:11:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47437 states. [2018-09-18 10:11:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47437 states to 47437 states and 61854 transitions. [2018-09-18 10:11:32,670 INFO L78 Accepts]: Start accepts. Automaton has 47437 states and 61854 transitions. Word has length 370 [2018-09-18 10:11:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:32,670 INFO L480 AbstractCegarLoop]: Abstraction has 47437 states and 61854 transitions. [2018-09-18 10:11:32,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:11:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 47437 states and 61854 transitions. [2018-09-18 10:11:32,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-09-18 10:11:32,781 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:32,781 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:32,782 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:32,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1846698863, now seen corresponding path program 1 times [2018-09-18 10:11:32,782 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:32,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:32,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:32,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:32,783 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:33,546 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:33,546 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 10:11:33,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:33,554 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:33,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:34,326 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:34,624 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 10:11:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 161 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:34,885 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:11:34,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:11:34,886 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:34,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:11:34,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:11:34,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:11:34,887 INFO L87 Difference]: Start difference. First operand 47437 states and 61854 transitions. Second operand 5 states. [2018-09-18 10:11:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:37,905 INFO L93 Difference]: Finished difference Result 94757 states and 124658 transitions. [2018-09-18 10:11:37,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:11:37,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2018-09-18 10:11:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:38,020 INFO L225 Difference]: With dead ends: 94757 [2018-09-18 10:11:38,020 INFO L226 Difference]: Without dead ends: 47336 [2018-09-18 10:11:38,092 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 739 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:11:38,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47336 states. [2018-09-18 10:11:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47336 to 46983. [2018-09-18 10:11:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46983 states. [2018-09-18 10:11:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46983 states to 46983 states and 59983 transitions. [2018-09-18 10:11:39,057 INFO L78 Accepts]: Start accepts. Automaton has 46983 states and 59983 transitions. Word has length 372 [2018-09-18 10:11:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:39,058 INFO L480 AbstractCegarLoop]: Abstraction has 46983 states and 59983 transitions. [2018-09-18 10:11:39,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:11:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 46983 states and 59983 transitions. [2018-09-18 10:11:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-09-18 10:11:39,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:39,144 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:39,144 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:39,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1991145764, now seen corresponding path program 1 times [2018-09-18 10:11:39,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:39,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:39,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:39,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:39,146 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:39,616 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:39,616 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 10:11:39,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:39,626 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:39,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:40,342 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:40,706 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 38 [2018-09-18 10:11:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 180 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:11:41,013 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:11:41,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 10:11:41,013 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:11:41,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:11:41,014 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:11:41,014 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:11:41,014 INFO L87 Difference]: Start difference. First operand 46983 states and 59983 transitions. Second operand 5 states. [2018-09-18 10:11:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:43,444 INFO L93 Difference]: Finished difference Result 77252 states and 98150 transitions. [2018-09-18 10:11:43,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:11:43,445 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2018-09-18 10:11:43,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:43,521 INFO L225 Difference]: With dead ends: 77252 [2018-09-18 10:11:43,521 INFO L226 Difference]: Without dead ends: 41151 [2018-09-18 10:11:43,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:11:43,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41151 states. [2018-09-18 10:11:44,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41151 to 40616. [2018-09-18 10:11:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40616 states. [2018-09-18 10:11:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40616 states to 40616 states and 49780 transitions. [2018-09-18 10:11:44,145 INFO L78 Accepts]: Start accepts. Automaton has 40616 states and 49780 transitions. Word has length 391 [2018-09-18 10:11:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:44,145 INFO L480 AbstractCegarLoop]: Abstraction has 40616 states and 49780 transitions. [2018-09-18 10:11:44,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:11:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 40616 states and 49780 transitions. [2018-09-18 10:11:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-09-18 10:11:44,193 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:44,193 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:44,193 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:44,194 INFO L82 PathProgramCache]: Analyzing trace with hash 61775672, now seen corresponding path program 1 times [2018-09-18 10:11:44,194 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:44,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:44,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:44,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:44,195 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:44,811 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:44,811 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 10:11:44,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:44,819 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:45,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:45,170 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:45,170 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:45,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:45,353 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 10:11:45,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:45,369 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:45,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:46,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:46,483 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:11:46,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 6] total 15 [2018-09-18 10:11:46,484 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:11:46,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:11:46,485 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:11:46,485 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:11:46,485 INFO L87 Difference]: Start difference. First operand 40616 states and 49780 transitions. Second operand 6 states. [2018-09-18 10:11:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:49,812 INFO L93 Difference]: Finished difference Result 93126 states and 117115 transitions. [2018-09-18 10:11:49,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:11:49,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 393 [2018-09-18 10:11:49,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:50,003 INFO L225 Difference]: With dead ends: 93126 [2018-09-18 10:11:50,003 INFO L226 Difference]: Without dead ends: 52526 [2018-09-18 10:11:50,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1582 GetRequests, 1564 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:11:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52526 states. [2018-09-18 10:11:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52526 to 51844. [2018-09-18 10:11:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51844 states. [2018-09-18 10:11:50,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51844 states to 51844 states and 61912 transitions. [2018-09-18 10:11:50,896 INFO L78 Accepts]: Start accepts. Automaton has 51844 states and 61912 transitions. Word has length 393 [2018-09-18 10:11:50,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:50,897 INFO L480 AbstractCegarLoop]: Abstraction has 51844 states and 61912 transitions. [2018-09-18 10:11:50,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:11:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 51844 states and 61912 transitions. [2018-09-18 10:11:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-09-18 10:11:50,956 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:50,956 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:50,956 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:50,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1932235547, now seen corresponding path program 1 times [2018-09-18 10:11:50,956 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:50,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:50,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:50,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:50,958 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:51,575 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:51,576 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:51,576 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 10:11:51,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:51,594 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:51,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:52,096 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 200 proven. 8 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:11:52,408 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:52,408 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 10:11:52,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:52,425 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:53,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:11:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 279 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:53,327 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:11:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 285 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:11:53,705 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:11:53,706 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 9, 8] total 20 [2018-09-18 10:11:53,706 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:11:53,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:11:53,707 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:11:53,707 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-09-18 10:11:53,707 INFO L87 Difference]: Start difference. First operand 51844 states and 61912 transitions. Second operand 6 states. [2018-09-18 10:11:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:11:57,468 INFO L93 Difference]: Finished difference Result 94701 states and 123972 transitions. [2018-09-18 10:11:57,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-18 10:11:57,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 404 [2018-09-18 10:11:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:11:57,719 INFO L225 Difference]: With dead ends: 94701 [2018-09-18 10:11:57,719 INFO L226 Difference]: Without dead ends: 56549 [2018-09-18 10:11:57,790 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1629 GetRequests, 1605 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2018-09-18 10:11:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56549 states. [2018-09-18 10:11:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56549 to 53877. [2018-09-18 10:11:58,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53877 states. [2018-09-18 10:11:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53877 states to 53877 states and 64278 transitions. [2018-09-18 10:11:58,845 INFO L78 Accepts]: Start accepts. Automaton has 53877 states and 64278 transitions. Word has length 404 [2018-09-18 10:11:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:11:58,845 INFO L480 AbstractCegarLoop]: Abstraction has 53877 states and 64278 transitions. [2018-09-18 10:11:58,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:11:58,845 INFO L276 IsEmpty]: Start isEmpty. Operand 53877 states and 64278 transitions. [2018-09-18 10:11:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2018-09-18 10:11:58,902 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:11:58,903 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 10:11:58,903 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:11:58,903 INFO L82 PathProgramCache]: Analyzing trace with hash 491691245, now seen corresponding path program 1 times [2018-09-18 10:11:58,903 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:11:58,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:58,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:58,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:11:58,904 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:11:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-18 10:11:59,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:11:59,494 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 10:11:59,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:11:59,501 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:11:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:11:59,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:12:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 243 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:12:00,370 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:12:00,643 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2018-09-18 10:12:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 224 proven. 86 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-18 10:12:01,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:12:01,623 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 10:12:01,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:12:01,639 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:12:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:12:02,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:12:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 286 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:12:02,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:12:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 212 proven. 99 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-18 10:12:03,104 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:12:03,105 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 10, 8] total 22 [2018-09-18 10:12:03,105 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:12:03,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:12:03,107 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:12:03,107 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2018-09-18 10:12:03,107 INFO L87 Difference]: Start difference. First operand 53877 states and 64278 transitions. Second operand 9 states. [2018-09-18 10:12:17,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:12:17,768 INFO L93 Difference]: Finished difference Result 144816 states and 200400 transitions. [2018-09-18 10:12:17,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-18 10:12:17,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 413 [2018-09-18 10:12:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:12:18,300 INFO L225 Difference]: With dead ends: 144816 [2018-09-18 10:12:18,300 INFO L226 Difference]: Without dead ends: 91180 [2018-09-18 10:12:18,448 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1760 GetRequests, 1681 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=918, Invalid=4934, Unknown=0, NotChecked=0, Total=5852 [2018-09-18 10:12:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91180 states. [2018-09-18 10:12:20,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91180 to 85128. [2018-09-18 10:12:20,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85128 states. [2018-09-18 10:12:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85128 states to 85128 states and 99663 transitions. [2018-09-18 10:12:21,095 INFO L78 Accepts]: Start accepts. Automaton has 85128 states and 99663 transitions. Word has length 413 [2018-09-18 10:12:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:12:21,095 INFO L480 AbstractCegarLoop]: Abstraction has 85128 states and 99663 transitions. [2018-09-18 10:12:21,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:12:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 85128 states and 99663 transitions. [2018-09-18 10:12:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-09-18 10:12:21,195 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:12:21,195 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:21,195 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:12:21,196 INFO L82 PathProgramCache]: Analyzing trace with hash -2041482561, now seen corresponding path program 1 times [2018-09-18 10:12:21,196 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:12:21,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:12:21,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:12:21,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:12:21,197 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:12:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:12:21,620 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-09-18 10:12:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 222 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 10:12:21,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:12:21,850 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:12:21,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:12:21,859 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:12:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:12:22,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:12:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-09-18 10:12:22,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:12:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 224 proven. 89 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-18 10:12:22,597 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:12:22,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 5] total 14 [2018-09-18 10:12:22,598 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:12:22,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:12:22,598 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:12:22,599 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-09-18 10:12:22,599 INFO L87 Difference]: Start difference. First operand 85128 states and 99663 transitions. Second operand 5 states. [2018-09-18 10:12:24,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:12:24,715 INFO L93 Difference]: Finished difference Result 188970 states and 225368 transitions. [2018-09-18 10:12:24,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:12:24,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 432 [2018-09-18 10:12:24,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:12:25,160 INFO L225 Difference]: With dead ends: 188970 [2018-09-18 10:12:25,160 INFO L226 Difference]: Without dead ends: 112241 [2018-09-18 10:12:25,290 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 856 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:12:25,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112241 states. [2018-09-18 10:12:27,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112241 to 110727. [2018-09-18 10:12:27,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110727 states. [2018-09-18 10:12:28,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110727 states to 110727 states and 128797 transitions. [2018-09-18 10:12:28,008 INFO L78 Accepts]: Start accepts. Automaton has 110727 states and 128797 transitions. Word has length 432 [2018-09-18 10:12:28,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:12:28,008 INFO L480 AbstractCegarLoop]: Abstraction has 110727 states and 128797 transitions. [2018-09-18 10:12:28,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:12:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 110727 states and 128797 transitions. [2018-09-18 10:12:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-09-18 10:12:28,106 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:12:28,106 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:12:28,107 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:12:28,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1771213995, now seen corresponding path program 1 times [2018-09-18 10:12:28,107 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:12:28,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:12:28,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:12:28,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:12:28,108 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:12:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:12:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 264 proven. 86 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-09-18 10:12:28,727 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:12:28,727 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:12:28,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:12:28,734 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:12:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:12:29,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:12:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-18 10:12:29,128 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:12:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-18 10:12:29,317 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:12:29,317 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 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:12:29,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:12:29,334 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:12:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:12:29,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:12:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 326 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:12:30,814 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:12:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-09-18 10:12:31,151 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:12:31,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 17 [2018-09-18 10:12:31,151 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:12:31,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:12:31,153 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:12:31,153 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2018-09-18 10:12:31,153 INFO L87 Difference]: Start difference. First operand 110727 states and 128797 transitions. Second operand 9 states. [2018-09-18 10:12:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:12:48,745 INFO L93 Difference]: Finished difference Result 411334 states and 533145 transitions. [2018-09-18 10:12:48,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-18 10:12:48,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 455 [2018-09-18 10:12:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:12:49,734 INFO L225 Difference]: With dead ends: 411334 [2018-09-18 10:12:49,734 INFO L226 Difference]: Without dead ends: 280129 [2018-09-18 10:12:50,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1882 GetRequests, 1836 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2018-09-18 10:12:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280129 states. [2018-09-18 10:13:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280129 to 263850. [2018-09-18 10:13:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263850 states. [2018-09-18 10:13:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263850 states to 263850 states and 299481 transitions. [2018-09-18 10:13:01,466 INFO L78 Accepts]: Start accepts. Automaton has 263850 states and 299481 transitions. Word has length 455 [2018-09-18 10:13:01,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:13:01,466 INFO L480 AbstractCegarLoop]: Abstraction has 263850 states and 299481 transitions. [2018-09-18 10:13:01,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:13:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 263850 states and 299481 transitions. [2018-09-18 10:13:01,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-09-18 10:13:01,670 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:13:01,670 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 10:13:01,670 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:13:01,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1361796262, now seen corresponding path program 1 times [2018-09-18 10:13:01,671 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:13:01,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:13:01,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:01,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:13:01,672 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:13:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:02,422 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 328 proven. 151 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-09-18 10:13:02,423 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:13:02,423 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:13:02,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:02,431 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:13:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:02,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:13:03,006 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2018-09-18 10:13:03,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:13:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 246 proven. 84 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-09-18 10:13:03,511 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 10:13:03,512 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 15 [2018-09-18 10:13:03,512 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:13:03,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 10:13:03,512 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 10:13:03,512 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:13:03,513 INFO L87 Difference]: Start difference. First operand 263850 states and 299481 transitions. Second operand 5 states. [2018-09-18 10:13:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:13:10,826 INFO L93 Difference]: Finished difference Result 577752 states and 651333 transitions. [2018-09-18 10:13:10,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 10:13:10,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 463 [2018-09-18 10:13:10,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:13:12,688 INFO L225 Difference]: With dead ends: 577752 [2018-09-18 10:13:12,688 INFO L226 Difference]: Without dead ends: 347182 [2018-09-18 10:13:12,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 938 GetRequests, 920 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-09-18 10:13:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347182 states. [2018-09-18 10:13:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347182 to 345982. [2018-09-18 10:13:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345982 states. [2018-09-18 10:13:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345982 states to 345982 states and 387376 transitions. [2018-09-18 10:13:20,988 INFO L78 Accepts]: Start accepts. Automaton has 345982 states and 387376 transitions. Word has length 463 [2018-09-18 10:13:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:13:20,989 INFO L480 AbstractCegarLoop]: Abstraction has 345982 states and 387376 transitions. [2018-09-18 10:13:20,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 10:13:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 345982 states and 387376 transitions. [2018-09-18 10:13:21,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-09-18 10:13:21,261 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:13:21,261 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:13:21,261 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:13:21,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1658436348, now seen corresponding path program 1 times [2018-09-18 10:13:21,262 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:13:21,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:13:21,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:21,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:13:21,263 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:13:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 317 proven. 30 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-18 10:13:21,758 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:13:21,759 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:13:21,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:21,768 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:13:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:22,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:13:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 328 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-18 10:13:22,210 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:13:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 295 proven. 114 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-18 10:13:22,464 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:13:22,464 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 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:13:22,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:22,480 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:13:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:23,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:13:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 328 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-18 10:13:24,256 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:13:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 295 proven. 114 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-09-18 10:13:24,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:13:24,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 15 [2018-09-18 10:13:24,554 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:13:24,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:13:24,556 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:13:24,556 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-09-18 10:13:24,556 INFO L87 Difference]: Start difference. First operand 345982 states and 387376 transitions. Second operand 9 states. [2018-09-18 10:13:49,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:13:49,635 INFO L93 Difference]: Finished difference Result 594802 states and 718893 transitions. [2018-09-18 10:13:49,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-18 10:13:49,636 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 480 [2018-09-18 10:13:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:13:50,870 INFO L225 Difference]: With dead ends: 594802 [2018-09-18 10:13:50,870 INFO L226 Difference]: Without dead ends: 242933 [2018-09-18 10:13:51,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1985 GetRequests, 1934 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=441, Invalid=1911, Unknown=0, NotChecked=0, Total=2352 [2018-09-18 10:13:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242933 states. [2018-09-18 10:13:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242933 to 218933. [2018-09-18 10:13:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218933 states. [2018-09-18 10:13:57,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218933 states to 218933 states and 237697 transitions. [2018-09-18 10:13:57,270 INFO L78 Accepts]: Start accepts. Automaton has 218933 states and 237697 transitions. Word has length 480 [2018-09-18 10:13:57,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:13:57,271 INFO L480 AbstractCegarLoop]: Abstraction has 218933 states and 237697 transitions. [2018-09-18 10:13:57,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:13:57,271 INFO L276 IsEmpty]: Start isEmpty. Operand 218933 states and 237697 transitions. [2018-09-18 10:13:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-09-18 10:13:57,429 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:13:57,430 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, 4, 4, 4, 4, 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, 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] [2018-09-18 10:13:57,430 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:13:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1871238712, now seen corresponding path program 1 times [2018-09-18 10:13:57,431 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:13:57,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:13:57,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:57,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:13:57,431 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:13:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 372 proven. 126 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-18 10:13:58,088 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:13:58,088 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:13:58,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:58,097 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:13:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:13:58,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:13:58,577 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 428 proven. 2 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-18 10:13:58,577 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-18 10:13:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 339 proven. 91 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2018-09-18 10:13:59,868 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:13:59,868 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 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:13:59,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:13:59,884 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:14:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:14:00,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:14:00,637 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 10:14:00,838 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:14:00,838 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 10:14:00,845 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 10:14:00,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:14:00 BoogieIcfgContainer [2018-09-18 10:14:00,845 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:14:00,846 INFO L168 Benchmark]: Toolchain (without parser) took 214623.50 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.3 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-18 10:14:00,848 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:14:00,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1085.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-18 10:14:00,849 INFO L168 Benchmark]: Boogie Procedure Inliner took 172.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-18 10:14:00,850 INFO L168 Benchmark]: Boogie Preprocessor took 396.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -937.5 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2018-09-18 10:14:00,850 INFO L168 Benchmark]: RCFGBuilder took 4713.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 264.8 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. [2018-09-18 10:14:00,851 INFO L168 Benchmark]: TraceAbstraction took 208248.80 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-09-18 10:14:00,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1085.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 172.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 396.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -937.5 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4713.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 264.8 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208248.80 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 2.0 GB in the beginning and 3.8 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1629]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1629). Cancelled while BasicCegarLoop was analyzing trace of length 489 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 208.1s OverallTime, 20 OverallIterations, 5 TraceHistogramMax, 124.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3928 SDtfs, 22593 SDslu, 5845 SDs, 0 SdLazy, 46750 SolverSat, 7691 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17216 GetRequests, 16805 SyntacticMatches, 38 SemanticMatches, 373 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3743 ImplicationChecksByTransitivity, 15.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=345982occurred in iteration=18, 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: 41.0s AutomataMinimizationTime, 19 MinimizatonAttempts, 57292 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.5s SsaConstructionTime, 7.3s SatisfiabilityAnalysisTime, 26.0s InterpolantComputationTime, 15022 NumberOfCodeBlocks, 15022 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 23354 ConstructedInterpolants, 0 QuantifiedInterpolants, 23259920 SizeOfPredicates, 77 NumberOfNonLiveVariables, 29075 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 63 InterpolantComputations, 13 PerfectInterpolantSequences, 14093/15828 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/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-14-00-875.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label04_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-14-00-875.csv Completed graceful shutdown