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/Problem12_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:21:09,229 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:21:09,231 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:21:09,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:21:09,243 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:21:09,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:21:09,246 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:21:09,247 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:21:09,249 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:21:09,250 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:21:09,251 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:21:09,251 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:21:09,252 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:21:09,253 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:21:09,254 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:21:09,255 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:21:09,256 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:21:09,258 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:21:09,260 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:21:09,261 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:21:09,262 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:21:09,264 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:21:09,266 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:21:09,266 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:21:09,266 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:21:09,267 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:21:09,269 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:21:09,269 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:21:09,270 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:21:09,271 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:21:09,272 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:21:09,273 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:21:09,273 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:21:09,273 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:21:09,274 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:21:09,275 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:21:09,275 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 [2018-09-14 17:21:09,292 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:21:09,292 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:21:09,293 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:21:09,293 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:21:09,293 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:21:09,293 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:21:09,294 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:21:09,294 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:21:09,294 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:21:09,294 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:21:09,294 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:21:09,295 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:21:09,295 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:21:09,296 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:21:09,296 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:21:09,296 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:21:09,296 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:21:09,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:21:09,297 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:21:09,297 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:21:09,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:21:09,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:21:09,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:21:09,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:21:09,298 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:21:09,298 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:21:09,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:21:09,298 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:21:09,299 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:21:09,299 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:21:09,299 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:21:09,299 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:21:09,299 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:21:09,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:21:09,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:21:09,362 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:21:09,364 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:21:09,364 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:21:09,365 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-09-14 17:21:09,712 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de375a38/918a3f98fb414b04bf49d67687147c93/FLAG5b627a770 [2018-09-14 17:21:10,191 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:21:10,192 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-09-14 17:21:10,220 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de375a38/918a3f98fb414b04bf49d67687147c93/FLAG5b627a770 [2018-09-14 17:21:10,238 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3de375a38/918a3f98fb414b04bf49d67687147c93 [2018-09-14 17:21:10,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:21:10,254 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:21:10,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:21:10,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:21:10,267 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:21:10,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:21:10" (1/1) ... [2018-09-14 17:21:10,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68a2763a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:10, skipping insertion in model container [2018-09-14 17:21:10,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:21:10" (1/1) ... [2018-09-14 17:21:10,286 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:21:11,650 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:21:11,672 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:21:12,373 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:21:12,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12 WrapperNode [2018-09-14 17:21:12,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:21:12,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:21:12,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:21:12,647 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:21:12,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:12,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:12,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:21:12,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:21:12,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:21:12,873 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:21:13,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (1/1) ... [2018-09-14 17:21:13,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:21:13,900 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:21:13,900 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:21:13,900 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:21:13,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (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 [2018-09-14 17:21:13,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:21:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:21:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-14 17:21:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-14 17:21:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 17:21:13,974 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 17:21:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 17:21:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 17:21:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:21:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:21:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:21:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:21:13,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:21:13,976 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:21:25,061 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:21:25,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:21:25 BoogieIcfgContainer [2018-09-14 17:21:25,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:21:25,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:21:25,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:21:25,067 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:21:25,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:21:10" (1/3) ... [2018-09-14 17:21:25,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49257913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:21:25, skipping insertion in model container [2018-09-14 17:21:25,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:21:12" (2/3) ... [2018-09-14 17:21:25,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49257913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:21:25, skipping insertion in model container [2018-09-14 17:21:25,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:21:25" (3/3) ... [2018-09-14 17:21:25,071 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22_true-unreach-call.c [2018-09-14 17:21:25,081 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:21:25,090 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:21:25,153 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:21:25,154 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:21:25,154 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:21:25,154 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:21:25,155 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:21:25,155 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:21:25,155 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:21:25,155 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:21:25,155 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:21:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-14 17:21:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-14 17:21:25,205 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:25,206 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] [2018-09-14 17:21:25,208 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash -2101117445, now seen corresponding path program 1 times [2018-09-14 17:21:25,216 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:25,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:25,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:25,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:25,269 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:25,709 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:21:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:25,765 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:25,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:21:25,766 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:25,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:21:25,791 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:21:25,792 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:21:25,795 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-14 17:21:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:35,934 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-14 17:21:35,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:21:35,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-09-14 17:21:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:35,984 INFO L225 Difference]: With dead ends: 2446 [2018-09-14 17:21:35,984 INFO L226 Difference]: Without dead ends: 1604 [2018-09-14 17:21:36,001 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:21:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-14 17:21:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-14 17:21:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-14 17:21:36,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-14 17:21:36,208 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 71 [2018-09-14 17:21:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:36,209 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-14 17:21:36,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:21:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-14 17:21:36,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-14 17:21:36,225 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:36,226 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:21:36,226 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash -843018732, now seen corresponding path program 1 times [2018-09-14 17:21:36,227 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:36,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:36,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:36,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:36,229 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:36,612 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:21:36,675 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:36,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:36,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:21:36,676 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:36,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:21:36,678 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:21:36,678 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:21:36,679 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-14 17:21:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:21:46,705 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-14 17:21:46,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:21:46,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-09-14 17:21:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:21:46,730 INFO L225 Difference]: With dead ends: 4818 [2018-09-14 17:21:46,730 INFO L226 Difference]: Without dead ends: 3220 [2018-09-14 17:21:46,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:21:46,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-14 17:21:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-14 17:21:46,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-14 17:21:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-14 17:21:46,852 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 145 [2018-09-14 17:21:46,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:21:46,853 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-14 17:21:46,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:21:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-14 17:21:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-14 17:21:46,865 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:21:46,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:21:46,866 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:21:46,866 INFO L82 PathProgramCache]: Analyzing trace with hash -963200243, now seen corresponding path program 1 times [2018-09-14 17:21:46,869 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:21:46,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:46,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:21:46,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:21:46,870 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:21:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:21:47,119 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:21:47,120 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:21:47,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:21:47,120 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:21:47,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:21:47,121 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:21:47,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:21:47,122 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-14 17:22:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:02,074 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-14 17:22:02,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:22:02,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-09-14 17:22:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:02,126 INFO L225 Difference]: With dead ends: 11148 [2018-09-14 17:22:02,127 INFO L226 Difference]: Without dead ends: 7968 [2018-09-14 17:22:02,142 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 [2018-09-14 17:22:02,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-14 17:22:02,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-14 17:22:02,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-14 17:22:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-14 17:22:02,396 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 150 [2018-09-14 17:22:02,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:02,396 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-14 17:22:02,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:22:02,397 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-14 17:22:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-14 17:22:02,402 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:02,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:02,403 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:02,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1301757085, now seen corresponding path program 1 times [2018-09-14 17:22:02,403 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:02,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:02,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:02,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:02,409 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:02,698 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:22:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:02,888 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:02,888 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:22:02,888 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:02,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:22:02,889 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:22:02,889 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:22:02,889 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-14 17:22:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:14,060 INFO L93 Difference]: Finished difference Result 22224 states and 38011 transitions. [2018-09-14 17:22:14,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:22:14,061 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-09-14 17:22:14,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:14,140 INFO L225 Difference]: With dead ends: 22224 [2018-09-14 17:22:14,141 INFO L226 Difference]: Without dead ends: 14306 [2018-09-14 17:22:14,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:22:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-14 17:22:14,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-14 17:22:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-14 17:22:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21557 transitions. [2018-09-14 17:22:14,485 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21557 transitions. Word has length 158 [2018-09-14 17:22:14,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:14,486 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21557 transitions. [2018-09-14 17:22:14,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:22:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21557 transitions. [2018-09-14 17:22:14,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-14 17:22:14,494 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:14,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:14,495 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:14,495 INFO L82 PathProgramCache]: Analyzing trace with hash -825092784, now seen corresponding path program 1 times [2018-09-14 17:22:14,495 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:14,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:14,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:14,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:14,497 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:22:14,814 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:14,815 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:22:14,815 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:14,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:22:14,816 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:22:14,816 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:22:14,816 INFO L87 Difference]: Start difference. First operand 14219 states and 21557 transitions. Second operand 6 states. [2018-09-14 17:22:26,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:26,883 INFO L93 Difference]: Finished difference Result 35967 states and 55895 transitions. [2018-09-14 17:22:26,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:22:26,883 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-09-14 17:22:26,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:26,968 INFO L225 Difference]: With dead ends: 35967 [2018-09-14 17:22:26,968 INFO L226 Difference]: Without dead ends: 21754 [2018-09-14 17:22:27,021 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 17:22:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21754 states. [2018-09-14 17:22:27,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21754 to 21659. [2018-09-14 17:22:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21659 states. [2018-09-14 17:22:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21659 states to 21659 states and 30278 transitions. [2018-09-14 17:22:27,468 INFO L78 Accepts]: Start accepts. Automaton has 21659 states and 30278 transitions. Word has length 191 [2018-09-14 17:22:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:27,469 INFO L480 AbstractCegarLoop]: Abstraction has 21659 states and 30278 transitions. [2018-09-14 17:22:27,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:22:27,469 INFO L276 IsEmpty]: Start isEmpty. Operand 21659 states and 30278 transitions. [2018-09-14 17:22:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-14 17:22:27,490 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:27,491 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:27,491 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:27,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1239328397, now seen corresponding path program 1 times [2018-09-14 17:22:27,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:27,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:27,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:27,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:27,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:28,003 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-14 17:22:28,004 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:22:28,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 17:22:28,004 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:28,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:22:28,005 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:22:28,005 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 17:22:28,005 INFO L87 Difference]: Start difference. First operand 21659 states and 30278 transitions. Second operand 5 states. [2018-09-14 17:22:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:22:51,443 INFO L93 Difference]: Finished difference Result 71497 states and 103334 transitions. [2018-09-14 17:22:51,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:22:51,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-09-14 17:22:51,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:22:51,627 INFO L225 Difference]: With dead ends: 71497 [2018-09-14 17:22:51,627 INFO L226 Difference]: Without dead ends: 49844 [2018-09-14 17:22:51,691 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:22:51,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49844 states. [2018-09-14 17:22:52,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49844 to 49056. [2018-09-14 17:22:52,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49056 states. [2018-09-14 17:22:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49056 states to 49056 states and 64453 transitions. [2018-09-14 17:22:52,673 INFO L78 Accepts]: Start accepts. Automaton has 49056 states and 64453 transitions. Word has length 267 [2018-09-14 17:22:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:22:52,673 INFO L480 AbstractCegarLoop]: Abstraction has 49056 states and 64453 transitions. [2018-09-14 17:22:52,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:22:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 49056 states and 64453 transitions. [2018-09-14 17:22:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-09-14 17:22:52,701 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:22:52,701 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:22:52,702 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:22:52,702 INFO L82 PathProgramCache]: Analyzing trace with hash 866225877, now seen corresponding path program 1 times [2018-09-14 17:22:52,702 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:22:52,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:52,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:52,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:22:52,704 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:22:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:22:53,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:22:53,432 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 [2018-09-14 17:22:53,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:22:53,443 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:22:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:22:53,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:22:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-14 17:22:53,789 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:22:53,993 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 17:22:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:22:54,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:22:54,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-14 17:22:54,361 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:22:54,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:22:54,362 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:22:54,362 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:22:54,362 INFO L87 Difference]: Start difference. First operand 49056 states and 64453 transitions. Second operand 5 states. [2018-09-14 17:23:05,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:05,349 INFO L93 Difference]: Finished difference Result 143923 states and 197344 transitions. [2018-09-14 17:23:05,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 17:23:05,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2018-09-14 17:23:05,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:05,823 INFO L225 Difference]: With dead ends: 143923 [2018-09-14 17:23:05,823 INFO L226 Difference]: Without dead ends: 94873 [2018-09-14 17:23:06,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:23:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94873 states. [2018-09-14 17:23:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94873 to 90110. [2018-09-14 17:23:08,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90110 states. [2018-09-14 17:23:08,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90110 states to 90110 states and 117088 transitions. [2018-09-14 17:23:08,835 INFO L78 Accepts]: Start accepts. Automaton has 90110 states and 117088 transitions. Word has length 271 [2018-09-14 17:23:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:08,835 INFO L480 AbstractCegarLoop]: Abstraction has 90110 states and 117088 transitions. [2018-09-14 17:23:08,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:23:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 90110 states and 117088 transitions. [2018-09-14 17:23:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-14 17:23:08,890 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:08,890 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:08,891 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:08,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1273228242, now seen corresponding path program 1 times [2018-09-14 17:23:08,892 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:08,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:08,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:08,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:08,893 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:09,338 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 17:23:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:23:09,527 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:09,527 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:23:09,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:09,537 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:09,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-14 17:23:10,023 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:23:10,737 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:23:10,737 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-14 17:23:10,737 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:10,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:23:10,738 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:23:10,739 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-14 17:23:10,739 INFO L87 Difference]: Start difference. First operand 90110 states and 117088 transitions. Second operand 5 states. [2018-09-14 17:23:19,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:19,986 INFO L93 Difference]: Finished difference Result 197496 states and 264145 transitions. [2018-09-14 17:23:19,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:23:19,987 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2018-09-14 17:23:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:20,296 INFO L225 Difference]: With dead ends: 197496 [2018-09-14 17:23:20,297 INFO L226 Difference]: Without dead ends: 107392 [2018-09-14 17:23:20,466 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 774 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-14 17:23:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107392 states. [2018-09-14 17:23:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107392 to 104992. [2018-09-14 17:23:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104992 states. [2018-09-14 17:23:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104992 states to 104992 states and 129215 transitions. [2018-09-14 17:23:22,814 INFO L78 Accepts]: Start accepts. Automaton has 104992 states and 129215 transitions. Word has length 390 [2018-09-14 17:23:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:22,814 INFO L480 AbstractCegarLoop]: Abstraction has 104992 states and 129215 transitions. [2018-09-14 17:23:22,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:23:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 104992 states and 129215 transitions. [2018-09-14 17:23:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-14 17:23:22,891 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:22,891 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:22,891 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:22,892 INFO L82 PathProgramCache]: Analyzing trace with hash 370174583, now seen corresponding path program 1 times [2018-09-14 17:23:22,892 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:22,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:22,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:22,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:22,893 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-14 17:23:23,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:23,435 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 [2018-09-14 17:23:23,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:23,445 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:23,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-14 17:23:23,722 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-14 17:23:23,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:23,965 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:23:23,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:23,980 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:24,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-14 17:23:25,846 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:26,216 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-14 17:23:26,218 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:23:26,218 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 17:23:26,219 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:23:26,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:23:26,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:23:26,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-14 17:23:26,221 INFO L87 Difference]: Start difference. First operand 104992 states and 129215 transitions. Second operand 9 states. [2018-09-14 17:23:40,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:40,492 INFO L93 Difference]: Finished difference Result 236980 states and 308202 transitions. [2018-09-14 17:23:40,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-14 17:23:40,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 454 [2018-09-14 17:23:40,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:40,979 INFO L225 Difference]: With dead ends: 236980 [2018-09-14 17:23:40,979 INFO L226 Difference]: Without dead ends: 131994 [2018-09-14 17:23:41,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1832 GetRequests, 1811 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-09-14 17:23:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131994 states. [2018-09-14 17:23:43,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131994 to 127746. [2018-09-14 17:23:43,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127746 states. [2018-09-14 17:23:45,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127746 states to 127746 states and 161874 transitions. [2018-09-14 17:23:45,626 INFO L78 Accepts]: Start accepts. Automaton has 127746 states and 161874 transitions. Word has length 454 [2018-09-14 17:23:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:45,626 INFO L480 AbstractCegarLoop]: Abstraction has 127746 states and 161874 transitions. [2018-09-14 17:23:45,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:23:45,627 INFO L276 IsEmpty]: Start isEmpty. Operand 127746 states and 161874 transitions. [2018-09-14 17:23:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-09-14 17:23:45,689 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:45,690 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:45,690 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:45,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1598799646, now seen corresponding path program 1 times [2018-09-14 17:23:45,691 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:45,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:45,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:45,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:45,692 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-14 17:23:46,096 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:23:46,096 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:23:46,096 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:23:46,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:23:46,097 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:23:46,097 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:23:46,097 INFO L87 Difference]: Start difference. First operand 127746 states and 161874 transitions. Second operand 3 states. [2018-09-14 17:23:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:23:52,934 INFO L93 Difference]: Finished difference Result 273907 states and 354716 transitions. [2018-09-14 17:23:52,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:23:52,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-09-14 17:23:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:23:54,535 INFO L225 Difference]: With dead ends: 273907 [2018-09-14 17:23:54,535 INFO L226 Difference]: Without dead ends: 146172 [2018-09-14 17:23:54,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:23:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146172 states. [2018-09-14 17:23:56,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146172 to 141459. [2018-09-14 17:23:56,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141459 states. [2018-09-14 17:23:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141459 states to 141459 states and 178006 transitions. [2018-09-14 17:23:57,196 INFO L78 Accepts]: Start accepts. Automaton has 141459 states and 178006 transitions. Word has length 459 [2018-09-14 17:23:57,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:23:57,197 INFO L480 AbstractCegarLoop]: Abstraction has 141459 states and 178006 transitions. [2018-09-14 17:23:57,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:23:57,198 INFO L276 IsEmpty]: Start isEmpty. Operand 141459 states and 178006 transitions. [2018-09-14 17:23:57,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-14 17:23:57,274 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:23:57,274 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:23:57,275 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:23:57,275 INFO L82 PathProgramCache]: Analyzing trace with hash -653778841, now seen corresponding path program 1 times [2018-09-14 17:23:57,275 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:23:57,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:57,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:57,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:23:57,277 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:23:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:23:59,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:59,100 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 [2018-09-14 17:23:59,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:59,108 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:23:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:23:59,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:23:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:23:59,480 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:23:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:23:59,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:23:59,816 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:23:59,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:23:59,840 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:24:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:00,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:24:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:24:00,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:24:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:24:01,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:24:01,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-14 17:24:01,111 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:24:01,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:24:01,114 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:24:01,114 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:24:01,114 INFO L87 Difference]: Start difference. First operand 141459 states and 178006 transitions. Second operand 9 states. [2018-09-14 17:24:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:15,492 INFO L93 Difference]: Finished difference Result 284433 states and 359726 transitions. [2018-09-14 17:24:15,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 17:24:15,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-09-14 17:24:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:15,922 INFO L225 Difference]: With dead ends: 284433 [2018-09-14 17:24:15,923 INFO L226 Difference]: Without dead ends: 132254 [2018-09-14 17:24:16,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2058 GetRequests, 2035 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-14 17:24:16,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132254 states. [2018-09-14 17:24:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132254 to 127403. [2018-09-14 17:24:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127403 states. [2018-09-14 17:24:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127403 states to 127403 states and 153107 transitions. [2018-09-14 17:24:18,530 INFO L78 Accepts]: Start accepts. Automaton has 127403 states and 153107 transitions. Word has length 510 [2018-09-14 17:24:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:18,531 INFO L480 AbstractCegarLoop]: Abstraction has 127403 states and 153107 transitions. [2018-09-14 17:24:18,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:24:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 127403 states and 153107 transitions. [2018-09-14 17:24:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-09-14 17:24:18,602 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:24:18,602 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:24:18,603 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:24:18,603 INFO L82 PathProgramCache]: Analyzing trace with hash -798920265, now seen corresponding path program 1 times [2018-09-14 17:24:18,603 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:24:18,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:18,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:24:18,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:24:18,604 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:24:18,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:24:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-14 17:24:19,262 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:24:19,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:24:19,262 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:24:19,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:24:19,263 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:24:19,264 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:24:19,264 INFO L87 Difference]: Start difference. First operand 127403 states and 153107 transitions. Second operand 4 states. [2018-09-14 17:24:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:24:31,848 INFO L93 Difference]: Finished difference Result 362302 states and 453753 transitions. [2018-09-14 17:24:31,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:24:31,848 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 614 [2018-09-14 17:24:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:24:31,852 INFO L225 Difference]: With dead ends: 362302 [2018-09-14 17:24:31,852 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 17:24:32,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:24:32,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 17:24:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 17:24:32,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 17:24:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 17:24:32,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 614 [2018-09-14 17:24:32,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:24:32,244 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 17:24:32,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:24:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 17:24:32,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 17:24:32,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 17:24:36,108 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2018-09-14 17:24:37,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,421 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,814 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,900 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:38,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,047 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,125 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,154 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,231 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,497 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,799 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:39,960 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,037 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,133 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,136 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,675 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,774 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,936 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,937 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:40,975 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:41,307 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:41,361 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:41,652 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:41,792 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:41,887 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:42,151 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:42,173 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:42,206 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:42,228 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:42,370 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:42,738 WARN L178 SmtUtils]: Spent 5.55 s on a formula simplification. DAG size of input: 1048 DAG size of output: 848 [2018-09-14 17:24:43,106 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,587 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,597 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,606 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,866 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,913 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,921 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,956 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:43,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,033 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,055 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,100 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,164 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,326 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,458 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,555 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,603 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,629 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,662 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:44,925 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,035 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,130 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,279 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,280 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,644 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:45,701 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,008 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,157 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,522 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,596 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:46,736 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-14 17:24:47,098 WARN L178 SmtUtils]: Spent 4.36 s on a formula simplification. DAG size of input: 1048 DAG size of output: 848 Received shutdown request... [2018-09-14 17:24:49,514 WARN L186 SmtUtils]: Removed 203 from assertion stack [2018-09-14 17:24:49,515 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-14 17:24:49,516 INFO L168 Benchmark]: Toolchain (without parser) took 219264.59 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-09-14 17:24:49,517 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 17:24:49,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2389.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:24:49,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 225.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-14 17:24:49,520 INFO L168 Benchmark]: Boogie Preprocessor took 1026.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 921.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-14 17:24:49,521 INFO L168 Benchmark]: RCFGBuilder took 11162.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 642.8 MB). Peak memory consumption was 642.8 MB. Max. memory is 7.1 GB. [2018-09-14 17:24:49,522 INFO L168 Benchmark]: TraceAbstraction took 204451.88 ms. Allocated memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -770.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-09-14 17:24:49,527 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2389.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 225.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1026.93 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 921.2 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11162.95 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 642.8 MB). Peak memory consumption was 642.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204451.88 ms. Allocated memory was 2.4 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 1.6 GB in the beginning and 2.4 GB in the end (delta: -770.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 204]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 819. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-24-49-541.csv Completed graceful shutdown