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/Problem11_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 17:12:46,282 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 17:12:46,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 17:12:46,302 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 17:12:46,302 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 17:12:46,303 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 17:12:46,308 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 17:12:46,310 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 17:12:46,315 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 17:12:46,316 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 17:12:46,317 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 17:12:46,319 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 17:12:46,321 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 17:12:46,322 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 17:12:46,325 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 17:12:46,325 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 17:12:46,326 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 17:12:46,329 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 17:12:46,333 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 17:12:46,335 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 17:12:46,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 17:12:46,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 17:12:46,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 17:12:46,342 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 17:12:46,342 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 17:12:46,344 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 17:12:46,345 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 17:12:46,346 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 17:12:46,347 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 17:12:46,348 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 17:12:46,348 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 17:12:46,349 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 17:12:46,349 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 17:12:46,349 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 17:12:46,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 17:12:46,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 17:12:46,354 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 17:12:46,376 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 17:12:46,376 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 17:12:46,377 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 17:12:46,378 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 17:12:46,378 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 17:12:46,378 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 17:12:46,379 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 17:12:46,379 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 17:12:46,379 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 17:12:46,379 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 17:12:46,379 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 17:12:46,380 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 17:12:46,380 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 17:12:46,381 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 17:12:46,381 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 17:12:46,382 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 17:12:46,382 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 17:12:46,382 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 17:12:46,382 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 17:12:46,382 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 17:12:46,383 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 17:12:46,383 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 17:12:46,383 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 17:12:46,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 17:12:46,383 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 17:12:46,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 17:12:46,385 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 17:12:46,385 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 17:12:46,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 17:12:46,385 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 17:12:46,386 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 17:12:46,386 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 17:12:46,386 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 17:12:46,449 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 17:12:46,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 17:12:46,470 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 17:12:46,471 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 17:12:46,472 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 17:12:46,472 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-09-14 17:12:46,734 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cbfd2992/802cb8fa1673499daf7c64873c8d7bbd/FLAG248757cc6 [2018-09-14 17:12:47,087 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 17:12:47,088 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-09-14 17:12:47,120 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cbfd2992/802cb8fa1673499daf7c64873c8d7bbd/FLAG248757cc6 [2018-09-14 17:12:47,142 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cbfd2992/802cb8fa1673499daf7c64873c8d7bbd [2018-09-14 17:12:47,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 17:12:47,159 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 17:12:47,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 17:12:47,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 17:12:47,169 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 17:12:47,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:12:47" (1/1) ... [2018-09-14 17:12:47,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4c6457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:47, skipping insertion in model container [2018-09-14 17:12:47,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 05:12:47" (1/1) ... [2018-09-14 17:12:47,187 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 17:12:47,849 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:12:47,876 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 17:12:48,055 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 17:12:48,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48 WrapperNode [2018-09-14 17:12:48,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 17:12:48,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 17:12:48,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 17:12:48,154 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 17:12:48,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 17:12:48,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 17:12:48,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 17:12:48,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 17:12:48,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (1/1) ... [2018-09-14 17:12:48,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 17:12:48,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 17:12:48,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 17:12:48,716 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 17:12:48,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (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 17:12:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 17:12:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 17:12:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 17:12:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 17:12:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 17:12:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 17:12:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 17:12:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 17:12:53,150 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 17:12:53,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:12:53 BoogieIcfgContainer [2018-09-14 17:12:53,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 17:12:53,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 17:12:53,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 17:12:53,156 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 17:12:53,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 05:12:47" (1/3) ... [2018-09-14 17:12:53,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c67e1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:12:53, skipping insertion in model container [2018-09-14 17:12:53,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 05:12:48" (2/3) ... [2018-09-14 17:12:53,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c67e1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 05:12:53, skipping insertion in model container [2018-09-14 17:12:53,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 05:12:53" (3/3) ... [2018-09-14 17:12:53,160 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28_true-unreach-call.c [2018-09-14 17:12:53,170 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 17:12:53,179 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 17:12:53,235 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 17:12:53,236 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 17:12:53,236 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 17:12:53,236 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 17:12:53,237 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 17:12:53,237 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 17:12:53,237 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 17:12:53,237 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 17:12:53,237 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 17:12:53,274 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-14 17:12:53,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-14 17:12:53,284 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:53,285 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] [2018-09-14 17:12:53,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:53,291 INFO L82 PathProgramCache]: Analyzing trace with hash -718311439, now seen corresponding path program 1 times [2018-09-14 17:12:53,294 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:53,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:53,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:53,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:53,339 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:53,829 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-14 17:12:53,854 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 17:12:53,857 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:53,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:12:53,857 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:53,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:12:53,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:12:53,882 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:53,885 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-09-14 17:12:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:12:56,986 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-09-14 17:12:56,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:12:56,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-09-14 17:12:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:12:57,012 INFO L225 Difference]: With dead ends: 982 [2018-09-14 17:12:57,013 INFO L226 Difference]: Without dead ends: 683 [2018-09-14 17:12:57,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:57,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-09-14 17:12:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-09-14 17:12:57,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-09-14 17:12:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-09-14 17:12:57,127 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 55 [2018-09-14 17:12:57,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:12:57,128 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-09-14 17:12:57,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:12:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-09-14 17:12:57,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-14 17:12:57,136 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:12:57,137 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:57,137 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:12:57,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2084126164, now seen corresponding path program 1 times [2018-09-14 17:12:57,138 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:12:57,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:57,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:12:57,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:12:57,140 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:12:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:12:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:12:57,450 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:12:57,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 17:12:57,451 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:12:57,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 17:12:57,453 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 17:12:57,453 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:12:57,454 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-09-14 17:13:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:01,823 INFO L93 Difference]: Finished difference Result 2512 states and 3858 transitions. [2018-09-14 17:13:01,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 17:13:01,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-09-14 17:13:01,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:01,842 INFO L225 Difference]: With dead ends: 2512 [2018-09-14 17:13:01,842 INFO L226 Difference]: Without dead ends: 1835 [2018-09-14 17:13:01,849 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 17:13:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2018-09-14 17:13:01,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1820. [2018-09-14 17:13:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-09-14 17:13:01,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2585 transitions. [2018-09-14 17:13:01,947 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2585 transitions. Word has length 129 [2018-09-14 17:13:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:01,948 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2585 transitions. [2018-09-14 17:13:01,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 17:13:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2585 transitions. [2018-09-14 17:13:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-14 17:13:01,956 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:01,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:13:01,956 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:01,957 INFO L82 PathProgramCache]: Analyzing trace with hash 643157075, now seen corresponding path program 1 times [2018-09-14 17:13:01,957 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:01,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:01,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:01,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:01,958 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:02,277 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:02,278 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:13:02,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 17:13:02,278 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:13:02,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:13:02,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:13:02,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 17:13:02,280 INFO L87 Difference]: Start difference. First operand 1820 states and 2585 transitions. Second operand 6 states. [2018-09-14 17:13:06,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:06,831 INFO L93 Difference]: Finished difference Result 6276 states and 9169 transitions. [2018-09-14 17:13:06,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:13:06,836 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-09-14 17:13:06,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:06,866 INFO L225 Difference]: With dead ends: 6276 [2018-09-14 17:13:06,866 INFO L226 Difference]: Without dead ends: 4462 [2018-09-14 17:13:06,884 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-14 17:13:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2018-09-14 17:13:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4307. [2018-09-14 17:13:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-09-14 17:13:07,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5764 transitions. [2018-09-14 17:13:07,020 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5764 transitions. Word has length 136 [2018-09-14 17:13:07,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:07,021 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5764 transitions. [2018-09-14 17:13:07,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:13:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5764 transitions. [2018-09-14 17:13:07,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-14 17:13:07,035 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:07,035 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, 2, 2, 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] [2018-09-14 17:13:07,036 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:07,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1736454008, now seen corresponding path program 1 times [2018-09-14 17:13:07,036 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:07,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:07,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:07,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:07,038 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:13:07,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:07,459 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 17:13:07,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:07,469 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:07,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:13:08,038 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:08,296 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-14 17:13:08,468 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-14 17:13:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:13:09,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 17:13:09,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 11 [2018-09-14 17:13:09,176 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:13:09,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 17:13:09,177 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 17:13:09,177 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:13:09,178 INFO L87 Difference]: Start difference. First operand 4307 states and 5764 transitions. Second operand 5 states. [2018-09-14 17:13:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:14,113 INFO L93 Difference]: Finished difference Result 11532 states and 15572 transitions. [2018-09-14 17:13:14,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 17:13:14,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2018-09-14 17:13:14,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:14,157 INFO L225 Difference]: With dead ends: 11532 [2018-09-14 17:13:14,158 INFO L226 Difference]: Without dead ends: 7036 [2018-09-14 17:13:14,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-14 17:13:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7036 states. [2018-09-14 17:13:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7036 to 6887. [2018-09-14 17:13:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6887 states. [2018-09-14 17:13:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6887 states to 6887 states and 9332 transitions. [2018-09-14 17:13:14,357 INFO L78 Accepts]: Start accepts. Automaton has 6887 states and 9332 transitions. Word has length 210 [2018-09-14 17:13:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:14,358 INFO L480 AbstractCegarLoop]: Abstraction has 6887 states and 9332 transitions. [2018-09-14 17:13:14,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 17:13:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 6887 states and 9332 transitions. [2018-09-14 17:13:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-09-14 17:13:14,376 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:14,377 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:13:14,377 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1439039131, now seen corresponding path program 1 times [2018-09-14 17:13:14,377 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:14,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:14,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:14,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:14,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:14,980 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:13:14,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:14,980 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 17:13:14,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:14,989 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:15,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:15,539 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:15,856 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:15,857 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:15,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:15,874 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:16,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:16,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:16,642 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:16,643 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 17 [2018-09-14 17:13:16,643 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:16,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-14 17:13:16,645 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-14 17:13:16,645 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2018-09-14 17:13:16,647 INFO L87 Difference]: Start difference. First operand 6887 states and 9332 transitions. Second operand 10 states. [2018-09-14 17:13:33,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:33,410 INFO L93 Difference]: Finished difference Result 28425 states and 42121 transitions. [2018-09-14 17:13:33,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-14 17:13:33,411 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2018-09-14 17:13:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:33,513 INFO L225 Difference]: With dead ends: 28425 [2018-09-14 17:13:33,513 INFO L226 Difference]: Without dead ends: 21544 [2018-09-14 17:13:33,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1096 GetRequests, 1027 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=836, Invalid=3856, Unknown=0, NotChecked=0, Total=4692 [2018-09-14 17:13:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21544 states. [2018-09-14 17:13:34,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21544 to 19570. [2018-09-14 17:13:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19570 states. [2018-09-14 17:13:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19570 states to 19570 states and 25302 transitions. [2018-09-14 17:13:34,092 INFO L78 Accepts]: Start accepts. Automaton has 19570 states and 25302 transitions. Word has length 253 [2018-09-14 17:13:34,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:34,092 INFO L480 AbstractCegarLoop]: Abstraction has 19570 states and 25302 transitions. [2018-09-14 17:13:34,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-14 17:13:34,093 INFO L276 IsEmpty]: Start isEmpty. Operand 19570 states and 25302 transitions. [2018-09-14 17:13:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-14 17:13:34,117 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:34,117 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:13:34,118 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:34,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1247546700, now seen corresponding path program 1 times [2018-09-14 17:13:34,118 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:34,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:34,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:34,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:34,120 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:34,589 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 17:13:34,589 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 17:13:34,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 17:13:34,590 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 17:13:34,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 17:13:34,591 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 17:13:34,591 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:13:34,591 INFO L87 Difference]: Start difference. First operand 19570 states and 25302 transitions. Second operand 3 states. [2018-09-14 17:13:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:37,492 INFO L93 Difference]: Finished difference Result 43158 states and 57080 transitions. [2018-09-14 17:13:37,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 17:13:37,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-09-14 17:13:37,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:37,579 INFO L225 Difference]: With dead ends: 43158 [2018-09-14 17:13:37,579 INFO L226 Difference]: Without dead ends: 23972 [2018-09-14 17:13:37,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 17:13:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23972 states. [2018-09-14 17:13:38,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23972 to 23576. [2018-09-14 17:13:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23576 states. [2018-09-14 17:13:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23576 states to 23576 states and 30506 transitions. [2018-09-14 17:13:38,086 INFO L78 Accepts]: Start accepts. Automaton has 23576 states and 30506 transitions. Word has length 295 [2018-09-14 17:13:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:38,087 INFO L480 AbstractCegarLoop]: Abstraction has 23576 states and 30506 transitions. [2018-09-14 17:13:38,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 17:13:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 23576 states and 30506 transitions. [2018-09-14 17:13:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-09-14 17:13:38,127 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:38,128 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 17:13:38,128 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 735034412, now seen corresponding path program 1 times [2018-09-14 17:13:38,128 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:38,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:38,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:38,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:38,130 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:39,223 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 17:13:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:39,772 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:39,772 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:39,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:39,780 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:39,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:40,344 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:41,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:41,000 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:41,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:41,017 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:41,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:41,325 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:41,689 WARN L178 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-14 17:13:42,030 WARN L178 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-14 17:13:42,508 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2018-09-14 17:13:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:42,791 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:42,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5, 5, 5] total 19 [2018-09-14 17:13:42,792 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:42,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-14 17:13:42,793 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-14 17:13:42,793 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-09-14 17:13:42,794 INFO L87 Difference]: Start difference. First operand 23576 states and 30506 transitions. Second operand 17 states. [2018-09-14 17:13:46,893 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2018-09-14 17:13:54,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:54,513 INFO L93 Difference]: Finished difference Result 46279 states and 63145 transitions. [2018-09-14 17:13:54,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-14 17:13:54,516 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 336 [2018-09-14 17:13:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:54,603 INFO L225 Difference]: With dead ends: 46279 [2018-09-14 17:13:54,603 INFO L226 Difference]: Without dead ends: 23087 [2018-09-14 17:13:54,659 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1407 GetRequests, 1352 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=775, Invalid=2305, Unknown=0, NotChecked=0, Total=3080 [2018-09-14 17:13:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23087 states. [2018-09-14 17:13:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23087 to 22570. [2018-09-14 17:13:55,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22570 states. [2018-09-14 17:13:55,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22570 states to 22570 states and 28881 transitions. [2018-09-14 17:13:55,124 INFO L78 Accepts]: Start accepts. Automaton has 22570 states and 28881 transitions. Word has length 336 [2018-09-14 17:13:55,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:55,125 INFO L480 AbstractCegarLoop]: Abstraction has 22570 states and 28881 transitions. [2018-09-14 17:13:55,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-14 17:13:55,125 INFO L276 IsEmpty]: Start isEmpty. Operand 22570 states and 28881 transitions. [2018-09-14 17:13:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-09-14 17:13:55,167 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:55,167 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:13:55,168 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:55,168 INFO L82 PathProgramCache]: Analyzing trace with hash -214712118, now seen corresponding path program 1 times [2018-09-14 17:13:55,168 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:55,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:55,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:55,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:55,170 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:55,789 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:13:55,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:55,789 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:13:55,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:55,798 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:55,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:13:55,989 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:13:56,339 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:13:56,339 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:13:56,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:56,355 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:13:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:13:56,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:13:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 219 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:13:56,709 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:13:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 17:13:56,859 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:13:56,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 8 [2018-09-14 17:13:56,860 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:13:56,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 17:13:56,861 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 17:13:56,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 17:13:56,862 INFO L87 Difference]: Start difference. First operand 22570 states and 28881 transitions. Second operand 6 states. [2018-09-14 17:13:58,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:13:58,963 INFO L93 Difference]: Finished difference Result 42886 states and 56798 transitions. [2018-09-14 17:13:58,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 17:13:58,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 353 [2018-09-14 17:13:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:13:59,035 INFO L225 Difference]: With dead ends: 42886 [2018-09-14 17:13:59,036 INFO L226 Difference]: Without dead ends: 19491 [2018-09-14 17:13:59,083 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1422 GetRequests, 1408 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-09-14 17:13:59,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19491 states. [2018-09-14 17:13:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19491 to 18102. [2018-09-14 17:13:59,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18102 states. [2018-09-14 17:13:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18102 states to 18102 states and 21771 transitions. [2018-09-14 17:13:59,428 INFO L78 Accepts]: Start accepts. Automaton has 18102 states and 21771 transitions. Word has length 353 [2018-09-14 17:13:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:13:59,429 INFO L480 AbstractCegarLoop]: Abstraction has 18102 states and 21771 transitions. [2018-09-14 17:13:59,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 17:13:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 18102 states and 21771 transitions. [2018-09-14 17:13:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-09-14 17:13:59,458 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:13:59,458 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:13:59,458 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:13:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash 479556675, now seen corresponding path program 1 times [2018-09-14 17:13:59,459 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:13:59,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:59,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:13:59,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:13:59,460 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:13:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:00,115 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:14:00,333 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:14:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 120 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:14:00,921 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:00,921 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:00,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:00,929 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:01,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:14:01,450 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:02,067 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:14:02,088 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:02,088 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:14:02,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:02,107 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:02,366 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:02,715 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:14:02,715 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:02,873 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-14 17:14:03,728 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-14 17:14:03,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:14:03,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5, 5, 5] total 28 [2018-09-14 17:14:03,730 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:14:03,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-14 17:14:03,731 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-14 17:14:03,732 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2018-09-14 17:14:03,732 INFO L87 Difference]: Start difference. First operand 18102 states and 21771 transitions. Second operand 21 states. [2018-09-14 17:14:07,609 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2018-09-14 17:14:12,787 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2018-09-14 17:14:21,370 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-09-14 17:14:25,890 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-14 17:14:26,268 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2018-09-14 17:14:32,258 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2018-09-14 17:14:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:14:38,300 INFO L93 Difference]: Finished difference Result 48860 states and 67825 transitions. [2018-09-14 17:14:38,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-09-14 17:14:38,300 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 357 [2018-09-14 17:14:38,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:14:38,403 INFO L225 Difference]: With dead ends: 48860 [2018-09-14 17:14:38,403 INFO L226 Difference]: Without dead ends: 27631 [2018-09-14 17:14:38,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1660 GetRequests, 1506 SyntacticMatches, 3 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8766 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=2815, Invalid=20441, Unknown=0, NotChecked=0, Total=23256 [2018-09-14 17:14:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27631 states. [2018-09-14 17:14:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27631 to 25196. [2018-09-14 17:14:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25196 states. [2018-09-14 17:14:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25196 states to 25196 states and 30644 transitions. [2018-09-14 17:14:39,196 INFO L78 Accepts]: Start accepts. Automaton has 25196 states and 30644 transitions. Word has length 357 [2018-09-14 17:14:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:14:39,197 INFO L480 AbstractCegarLoop]: Abstraction has 25196 states and 30644 transitions. [2018-09-14 17:14:39,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-14 17:14:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 25196 states and 30644 transitions. [2018-09-14 17:14:39,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-09-14 17:14:39,224 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:14:39,224 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:14:39,225 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:14:39,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1568936548, now seen corresponding path program 1 times [2018-09-14 17:14:39,225 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:14:39,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:39,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:39,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:14:39,226 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:14:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:40,105 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-09-14 17:14:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 250 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:14:40,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:40,572 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:14:40,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:40,581 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:40,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:40,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:14:40,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:14:41,510 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:14:41,510 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:14:41,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:14:41,528 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:14:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:14:41,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:14:45,056 WARN L178 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 97 DAG size of output: 42 [2018-09-14 17:14:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 175 proven. 168 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-09-14 17:14:46,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:14:46,552 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 38 [2018-09-14 17:14:47,320 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 159 proven. 188 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-09-14 17:14:47,322 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:14:47,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5, 8, 10] total 33 [2018-09-14 17:14:47,323 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:14:47,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-14 17:14:47,324 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-14 17:14:47,324 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=863, Unknown=0, NotChecked=0, Total=1056 [2018-09-14 17:14:47,324 INFO L87 Difference]: Start difference. First operand 25196 states and 30644 transitions. Second operand 19 states. [2018-09-14 17:15:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:15:04,967 INFO L93 Difference]: Finished difference Result 60025 states and 96801 transitions. [2018-09-14 17:15:04,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-14 17:15:04,968 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 368 [2018-09-14 17:15:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:15:05,287 INFO L225 Difference]: With dead ends: 60025 [2018-09-14 17:15:05,288 INFO L226 Difference]: Without dead ends: 33191 [2018-09-14 17:15:05,799 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1630 GetRequests, 1511 SyntacticMatches, 7 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2254, Invalid=10628, Unknown=0, NotChecked=0, Total=12882 [2018-09-14 17:15:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33191 states. [2018-09-14 17:15:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33191 to 27793. [2018-09-14 17:15:06,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27793 states. [2018-09-14 17:15:06,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27793 states to 27793 states and 33458 transitions. [2018-09-14 17:15:06,881 INFO L78 Accepts]: Start accepts. Automaton has 27793 states and 33458 transitions. Word has length 368 [2018-09-14 17:15:06,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:06,882 INFO L480 AbstractCegarLoop]: Abstraction has 27793 states and 33458 transitions. [2018-09-14 17:15:06,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-14 17:15:06,882 INFO L276 IsEmpty]: Start isEmpty. Operand 27793 states and 33458 transitions. [2018-09-14 17:15:06,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-09-14 17:15:06,905 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:06,905 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:15:06,905 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:06,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1394619589, now seen corresponding path program 1 times [2018-09-14 17:15:06,906 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:06,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:06,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:06,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:06,907 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 154 proven. 206 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-09-14 17:15:07,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:07,654 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:15:07,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:07,669 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:07,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-14 17:15:11,628 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 250 proven. 102 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:15:11,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:11,840 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 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:15:11,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:11,855 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:12,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 310 proven. 102 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2018-09-14 17:15:13,950 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 250 proven. 102 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-14 17:15:14,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:15:14,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5, 8, 5] total 14 [2018-09-14 17:15:14,125 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:15:14,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 17:15:14,126 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 17:15:14,126 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=128, Unknown=3, NotChecked=0, Total=182 [2018-09-14 17:15:14,127 INFO L87 Difference]: Start difference. First operand 27793 states and 33458 transitions. Second operand 9 states. [2018-09-14 17:15:20,301 WARN L178 SmtUtils]: Spent 3.57 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-09-14 17:15:38,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:15:38,162 INFO L93 Difference]: Finished difference Result 71336 states and 91142 transitions. [2018-09-14 17:15:38,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-14 17:15:38,162 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 401 [2018-09-14 17:15:38,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:15:38,289 INFO L225 Difference]: With dead ends: 71336 [2018-09-14 17:15:38,289 INFO L226 Difference]: Without dead ends: 43929 [2018-09-14 17:15:38,377 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1605 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=178, Invalid=520, Unknown=4, NotChecked=0, Total=702 [2018-09-14 17:15:38,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43929 states. [2018-09-14 17:15:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43929 to 41412. [2018-09-14 17:15:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41412 states. [2018-09-14 17:15:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41412 states to 41412 states and 49971 transitions. [2018-09-14 17:15:39,298 INFO L78 Accepts]: Start accepts. Automaton has 41412 states and 49971 transitions. Word has length 401 [2018-09-14 17:15:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:39,299 INFO L480 AbstractCegarLoop]: Abstraction has 41412 states and 49971 transitions. [2018-09-14 17:15:39,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 17:15:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 41412 states and 49971 transitions. [2018-09-14 17:15:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-14 17:15:39,325 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:39,326 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:39,326 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:39,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1275299725, now seen corresponding path program 1 times [2018-09-14 17:15:39,326 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:39,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:39,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:39,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:39,328 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 17:15:39,940 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:39,940 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:15:39,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:39,947 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:40,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 465 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:15:40,310 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 359 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:15:41,084 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:41,084 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 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:15:41,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:41,100 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:41,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 465 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:15:41,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 17:15:42,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:15:42,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 8, 5] total 23 [2018-09-14 17:15:42,708 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:15:42,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 17:15:42,710 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 17:15:42,710 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-09-14 17:15:42,710 INFO L87 Difference]: Start difference. First operand 41412 states and 49971 transitions. Second operand 13 states. [2018-09-14 17:15:44,532 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 11 [2018-09-14 17:15:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:15:51,586 INFO L93 Difference]: Finished difference Result 91397 states and 112777 transitions. [2018-09-14 17:15:51,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-14 17:15:51,587 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 406 [2018-09-14 17:15:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:15:51,729 INFO L225 Difference]: With dead ends: 91397 [2018-09-14 17:15:51,729 INFO L226 Difference]: Without dead ends: 53456 [2018-09-14 17:15:51,804 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 1622 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=411, Invalid=1395, Unknown=0, NotChecked=0, Total=1806 [2018-09-14 17:15:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53456 states. [2018-09-14 17:15:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53456 to 51694. [2018-09-14 17:15:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51694 states. [2018-09-14 17:15:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51694 states to 51694 states and 63829 transitions. [2018-09-14 17:15:53,241 INFO L78 Accepts]: Start accepts. Automaton has 51694 states and 63829 transitions. Word has length 406 [2018-09-14 17:15:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:15:53,241 INFO L480 AbstractCegarLoop]: Abstraction has 51694 states and 63829 transitions. [2018-09-14 17:15:53,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-14 17:15:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 51694 states and 63829 transitions. [2018-09-14 17:15:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-09-14 17:15:53,275 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:15:53,276 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 17:15:53,276 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:15:53,276 INFO L82 PathProgramCache]: Analyzing trace with hash 303171955, now seen corresponding path program 1 times [2018-09-14 17:15:53,276 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:15:53,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:53,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:53,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:15:53,277 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:15:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:53,650 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 17:15:54,681 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 13 proven. 356 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:15:54,682 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:54,682 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:15:54,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:54,689 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:54,810 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:55,644 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 365 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:15:55,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:56,606 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 146 proven. 223 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:15:56,628 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:15:56,628 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 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:15:56,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:15:56,645 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:15:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:15:56,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:15:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 363 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:15:57,643 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:15:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-09-14 17:15:58,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:15:58,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8, 8, 5, 5] total 34 [2018-09-14 17:15:58,610 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:15:58,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-14 17:15:58,612 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-14 17:15:58,612 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2018-09-14 17:15:58,613 INFO L87 Difference]: Start difference. First operand 51694 states and 63829 transitions. Second operand 24 states. [2018-09-14 17:15:59,425 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-09-14 17:16:00,829 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-09-14 17:16:06,020 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-09-14 17:16:07,562 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-09-14 17:16:08,660 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2018-09-14 17:16:10,978 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2018-09-14 17:16:15,679 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-14 17:16:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 17:16:24,507 INFO L93 Difference]: Finished difference Result 108521 states and 151593 transitions. [2018-09-14 17:16:24,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-14 17:16:24,510 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 415 [2018-09-14 17:16:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 17:16:24,700 INFO L225 Difference]: With dead ends: 108521 [2018-09-14 17:16:24,700 INFO L226 Difference]: Without dead ends: 53123 [2018-09-14 17:16:24,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1777 GetRequests, 1645 SyntacticMatches, 3 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5406 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=2700, Invalid=14330, Unknown=0, NotChecked=0, Total=17030 [2018-09-14 17:16:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53123 states. [2018-09-14 17:16:26,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53123 to 48540. [2018-09-14 17:16:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48540 states. [2018-09-14 17:16:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48540 states to 48540 states and 58237 transitions. [2018-09-14 17:16:26,721 INFO L78 Accepts]: Start accepts. Automaton has 48540 states and 58237 transitions. Word has length 415 [2018-09-14 17:16:26,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 17:16:26,722 INFO L480 AbstractCegarLoop]: Abstraction has 48540 states and 58237 transitions. [2018-09-14 17:16:26,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-14 17:16:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 48540 states and 58237 transitions. [2018-09-14 17:16:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-14 17:16:26,743 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 17:16:26,743 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 17:16:26,744 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 17:16:26,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1212757243, now seen corresponding path program 1 times [2018-09-14 17:16:26,744 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 17:16:26,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:16:26,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:16:26,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 17:16:26,745 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 17:16:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:16:27,573 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:16:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 375 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:16:28,034 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:16:28,034 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 17:16:28,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:16:28,043 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:16:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:16:28,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:16:28,426 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 484 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:16:28,426 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:16:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 375 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 17:16:29,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 17:16:29,256 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 17:16:29,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 17:16:29,272 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 17:16:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 17:16:29,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 17:16:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 479 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 17:16:30,016 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 17:16:30,642 WARN L178 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-09-14 17:16:31,033 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-09-14 17:16:31,184 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 17:16:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2018-09-14 17:16:31,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 17:16:31,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8, 7, 5] total 27 [2018-09-14 17:16:31,670 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 17:16:31,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-14 17:16:31,673 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-14 17:16:31,673 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2018-09-14 17:16:31,674 INFO L87 Difference]: Start difference. First operand 48540 states and 58237 transitions. Second operand 21 states. Received shutdown request... [2018-09-14 17:16:37,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-14 17:16:37,485 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 17:16:37,491 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 17:16:37,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 05:16:37 BoogieIcfgContainer [2018-09-14 17:16:37,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 17:16:37,492 INFO L168 Benchmark]: Toolchain (without parser) took 230336.27 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -360.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-09-14 17:16:37,493 INFO L168 Benchmark]: CDTParser took 0.22 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 17:16:37,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 993.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:37,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 188.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:37,495 INFO L168 Benchmark]: Boogie Preprocessor took 373.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -927.0 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:37,496 INFO L168 Benchmark]: RCFGBuilder took 4435.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 168.5 MB). Peak memory consumption was 168.5 MB. Max. memory is 7.1 GB. [2018-09-14 17:16:37,497 INFO L168 Benchmark]: TraceAbstraction took 224339.14 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 303.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-09-14 17:16:37,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 993.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 188.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 373.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -927.0 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4435.34 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 168.5 MB). Peak memory consumption was 168.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224339.14 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 303.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (48540states) and FLOYD_HOARE automaton (currently 29 states, 21 states before enhancement), while ReachableStatesComputation was computing reachable states (3298 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 224.2s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 169.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2464 SDtfs, 54246 SDslu, 6152 SDs, 0 SdLazy, 73831 SolverSat, 18820 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 111.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14490 GetRequests, 13791 SyntacticMatches, 39 SemanticMatches, 660 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22094 ImplicationChecksByTransitivity, 51.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51694occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 21290 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 38.6s InterpolantComputationTime, 10968 NumberOfCodeBlocks, 10968 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 17748 ConstructedInterpolants, 10 QuantifiedInterpolants, 43947493 SizeOfPredicates, 42 NumberOfNonLiveVariables, 11353 ConjunctsInSsa, 254 ConjunctsInUnsatCore, 52 InterpolantComputations, 5 PerfectInterpolantSequences, 15748/18490 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_17-16-37-514.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label28_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_17-16-37-514.csv Completed graceful shutdown