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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:23:18,267 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:23:18,269 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:23:18,281 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:23:18,281 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:23:18,282 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:23:18,283 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:23:18,285 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:23:18,287 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:23:18,288 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:23:18,288 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:23:18,289 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:23:18,290 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:23:18,291 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:23:18,292 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:23:18,292 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:23:18,293 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:23:18,295 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:23:18,297 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:23:18,299 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:23:18,300 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:23:18,301 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:23:18,306 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:23:18,306 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:23:18,306 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:23:18,307 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:23:18,308 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:23:18,309 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:23:18,310 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:23:18,311 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:23:18,311 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:23:18,312 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 18:23:18,314 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:23:18,329 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:23:18,329 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:23:18,330 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:23:18,330 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:23:18,330 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:23:18,331 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:23:18,331 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:23:18,331 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:23:18,331 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:23:18,331 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:23:18,332 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:23:18,332 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:23:18,332 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:23:18,333 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:23:18,333 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:23:18,333 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:23:18,333 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:23:18,333 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:23:18,334 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:23:18,334 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:23:18,334 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:23:18,334 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:23:18,334 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:23:18,335 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:23:18,335 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:23:18,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:23:18,335 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:23:18,335 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:23:18,336 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:23:18,336 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:23:18,336 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:23:18,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:23:18,336 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:23:18,336 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:23:18,337 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:23:18,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:23:18,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:23:18,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:23:18,397 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:23:18,397 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:23:18,398 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label50_false-unreach-call.c [2018-11-07 18:23:18,463 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a9ca4f4/39d0797043a24917890d432c29707c02/FLAGe11e999b4 [2018-11-07 18:23:19,210 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:23:19,213 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label50_false-unreach-call.c [2018-11-07 18:23:19,241 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a9ca4f4/39d0797043a24917890d432c29707c02/FLAGe11e999b4 [2018-11-07 18:23:19,259 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53a9ca4f4/39d0797043a24917890d432c29707c02 [2018-11-07 18:23:19,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:23:19,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:23:19,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:23:19,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:23:19,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:23:19,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:19" (1/1) ... [2018-11-07 18:23:19,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a760589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:19, skipping insertion in model container [2018-11-07 18:23:19,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:19" (1/1) ... [2018-11-07 18:23:19,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:23:19,402 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:23:20,469 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:23:20,474 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:23:20,852 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:23:20,877 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:23:20,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20 WrapperNode [2018-11-07 18:23:20,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:23:20,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:23:20,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:23:20,879 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:23:20,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:23:21,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:23:21,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:23:21,154 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:23:21,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (1/1) ... [2018-11-07 18:23:21,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:23:21,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:23:21,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:23:21,355 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:23:21,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (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 [2018-11-07 18:23:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:23:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:23:21,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:23:21,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:23:21,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:23:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:23:21,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:23:21,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:23:21,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:23:21,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:23:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:23:31,357 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:23:31,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:31 BoogieIcfgContainer [2018-11-07 18:23:31,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:23:31,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:23:31,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:23:31,362 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:23:31,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:23:19" (1/3) ... [2018-11-07 18:23:31,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f26a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:31, skipping insertion in model container [2018-11-07 18:23:31,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:20" (2/3) ... [2018-11-07 18:23:31,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f26a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:31, skipping insertion in model container [2018-11-07 18:23:31,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:31" (3/3) ... [2018-11-07 18:23:31,366 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label50_false-unreach-call.c [2018-11-07 18:23:31,376 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:23:31,385 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:23:31,404 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:23:31,448 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:23:31,448 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:23:31,449 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:23:31,449 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:23:31,449 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:23:31,449 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:23:31,449 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:23:31,449 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:23:31,486 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 18:23:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-07 18:23:31,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:31,494 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:31,496 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:31,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:31,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1651488332, now seen corresponding path program 1 times [2018-11-07 18:23:31,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:31,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:31,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:31,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:31,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:23:31,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:31,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:23:31,768 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:31,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:23:31,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:23:31,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:23:31,794 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 3 states. [2018-11-07 18:23:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:38,115 INFO L93 Difference]: Finished difference Result 1701 states and 3102 transitions. [2018-11-07 18:23:38,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:23:38,117 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-07 18:23:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:38,144 INFO L225 Difference]: With dead ends: 1701 [2018-11-07 18:23:38,145 INFO L226 Difference]: Without dead ends: 1095 [2018-11-07 18:23:38,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:23:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2018-11-07 18:23:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 1079. [2018-11-07 18:23:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2018-11-07 18:23:38,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1867 transitions. [2018-11-07 18:23:38,287 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1867 transitions. Word has length 16 [2018-11-07 18:23:38,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:38,288 INFO L480 AbstractCegarLoop]: Abstraction has 1079 states and 1867 transitions. [2018-11-07 18:23:38,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:23:38,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1867 transitions. [2018-11-07 18:23:38,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-07 18:23:38,293 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:38,293 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:38,294 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:38,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:38,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1481706238, now seen corresponding path program 1 times [2018-11-07 18:23:38,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:38,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:38,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:38,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:38,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:38,635 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:23:38,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:38,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:23:38,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:38,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:23:38,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:23:38,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:23:38,640 INFO L87 Difference]: Start difference. First operand 1079 states and 1867 transitions. Second operand 5 states. [2018-11-07 18:23:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:46,282 INFO L93 Difference]: Finished difference Result 3083 states and 5458 transitions. [2018-11-07 18:23:46,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:23:46,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-11-07 18:23:46,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:46,308 INFO L225 Difference]: With dead ends: 3083 [2018-11-07 18:23:46,308 INFO L226 Difference]: Without dead ends: 2010 [2018-11-07 18:23:46,315 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:23:46,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2018-11-07 18:23:46,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1988. [2018-11-07 18:23:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2018-11-07 18:23:46,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3238 transitions. [2018-11-07 18:23:46,409 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3238 transitions. Word has length 86 [2018-11-07 18:23:46,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:46,410 INFO L480 AbstractCegarLoop]: Abstraction has 1988 states and 3238 transitions. [2018-11-07 18:23:46,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:23:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3238 transitions. [2018-11-07 18:23:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-07 18:23:46,418 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:46,419 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:46,419 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:46,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1412498702, now seen corresponding path program 1 times [2018-11-07 18:23:46,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:46,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:46,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:46,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:46,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:23:46,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:46,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:23:46,693 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:46,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:23:46,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:23:46,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:23:46,694 INFO L87 Difference]: Start difference. First operand 1988 states and 3238 transitions. Second operand 6 states. [2018-11-07 18:23:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:51,522 INFO L93 Difference]: Finished difference Result 4890 states and 7920 transitions. [2018-11-07 18:23:51,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:23:51,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-11-07 18:23:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:51,539 INFO L225 Difference]: With dead ends: 4890 [2018-11-07 18:23:51,539 INFO L226 Difference]: Without dead ends: 2908 [2018-11-07 18:23:51,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:23:51,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2018-11-07 18:23:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2898. [2018-11-07 18:23:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2898 states. [2018-11-07 18:23:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3960 transitions. [2018-11-07 18:23:51,627 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3960 transitions. Word has length 92 [2018-11-07 18:23:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:51,628 INFO L480 AbstractCegarLoop]: Abstraction has 2898 states and 3960 transitions. [2018-11-07 18:23:51,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:23:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3960 transitions. [2018-11-07 18:23:51,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 18:23:51,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:51,632 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:51,632 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:51,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash 2006667847, now seen corresponding path program 1 times [2018-11-07 18:23:51,633 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:51,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:51,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:51,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:51,634 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:23:51,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:23:51,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:23:51,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:23:51,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:23:51,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:23:51,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:23:51,927 INFO L87 Difference]: Start difference. First operand 2898 states and 3960 transitions. Second operand 4 states. [2018-11-07 18:23:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:23:56,912 INFO L93 Difference]: Finished difference Result 5790 states and 7934 transitions. [2018-11-07 18:23:56,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:23:56,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2018-11-07 18:23:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:23:56,932 INFO L225 Difference]: With dead ends: 5790 [2018-11-07 18:23:56,932 INFO L226 Difference]: Without dead ends: 2898 [2018-11-07 18:23:56,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:23:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2898 states. [2018-11-07 18:23:56,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2898 to 2898. [2018-11-07 18:23:56,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2898 states. [2018-11-07 18:23:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 3748 transitions. [2018-11-07 18:23:57,008 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 3748 transitions. Word has length 126 [2018-11-07 18:23:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:23:57,009 INFO L480 AbstractCegarLoop]: Abstraction has 2898 states and 3748 transitions. [2018-11-07 18:23:57,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:23:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 3748 transitions. [2018-11-07 18:23:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 18:23:57,012 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:23:57,013 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:23:57,013 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:23:57,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:57,013 INFO L82 PathProgramCache]: Analyzing trace with hash 83736320, now seen corresponding path program 1 times [2018-11-07 18:23:57,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:23:57,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:57,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:23:57,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:23:57,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:23:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:23:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 18:23:57,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:23:57,346 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:23:57,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 181 with the following transitions: [2018-11-07 18:23:57,349 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [738], [740], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:23:57,410 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:23:57,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:23:57,934 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:23:59,239 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:23:59,242 INFO L272 AbstractInterpreter]: Visited 96 different actions 375 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:23:59,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:23:59,295 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:23:59,858 INFO L227 lantSequenceWeakener]: Weakened 177 states. On average, predicates are now at 74.92% of their original sizes. [2018-11-07 18:23:59,858 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:24:00,500 INFO L415 sIntCurrentIteration]: We unified 179 AI predicates to 179 [2018-11-07 18:24:00,500 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:24:00,502 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:24:00,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 18:24:00,502 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:24:00,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:24:00,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:24:00,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:24:00,504 INFO L87 Difference]: Start difference. First operand 2898 states and 3748 transitions. Second operand 11 states. [2018-11-07 18:24:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:24:47,347 INFO L93 Difference]: Finished difference Result 9902 states and 12806 transitions. [2018-11-07 18:24:47,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 18:24:47,347 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 180 [2018-11-07 18:24:47,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:24:47,373 INFO L225 Difference]: With dead ends: 9902 [2018-11-07 18:24:47,374 INFO L226 Difference]: Without dead ends: 7010 [2018-11-07 18:24:47,382 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:24:47,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2018-11-07 18:24:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 6973. [2018-11-07 18:24:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6973 states. [2018-11-07 18:24:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6973 states to 6973 states and 8880 transitions. [2018-11-07 18:24:47,544 INFO L78 Accepts]: Start accepts. Automaton has 6973 states and 8880 transitions. Word has length 180 [2018-11-07 18:24:47,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:24:47,544 INFO L480 AbstractCegarLoop]: Abstraction has 6973 states and 8880 transitions. [2018-11-07 18:24:47,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:24:47,545 INFO L276 IsEmpty]: Start isEmpty. Operand 6973 states and 8880 transitions. [2018-11-07 18:24:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 18:24:47,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:24:47,550 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:24:47,551 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:24:47,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:47,551 INFO L82 PathProgramCache]: Analyzing trace with hash 791679655, now seen corresponding path program 1 times [2018-11-07 18:24:47,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:24:47,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:47,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:47,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:24:47,553 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:24:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:48,190 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 18:24:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 18:24:48,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:24:48,319 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:24:48,319 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 18:24:48,320 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [738], [740], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:24:48,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:24:48,326 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:24:48,379 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:24:50,670 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:24:50,670 INFO L272 AbstractInterpreter]: Visited 151 different actions 886 times. Merged at 7 different actions 38 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:24:50,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:24:50,678 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:24:50,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:24:50,678 INFO L194 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 [2018-11-07 18:24:50,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:24:50,690 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:24:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:24:50,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:24:51,675 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-11-07 18:24:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 55 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-07 18:24:52,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:24:52,565 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-11-07 18:24:53,431 WARN L179 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-11-07 18:24:53,968 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-11-07 18:24:54,368 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:24:54,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:24:54,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2018-11-07 18:24:54,389 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:24:54,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:24:54,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:24:54,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:24:54,391 INFO L87 Difference]: Start difference. First operand 6973 states and 8880 transitions. Second operand 12 states. [2018-11-07 18:25:01,494 WARN L179 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-11-07 18:25:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:25:23,250 INFO L93 Difference]: Finished difference Result 46152 states and 60545 transitions. [2018-11-07 18:25:23,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-07 18:25:23,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 246 [2018-11-07 18:25:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:25:23,446 INFO L225 Difference]: With dead ends: 46152 [2018-11-07 18:25:23,446 INFO L226 Difference]: Without dead ends: 39619 [2018-11-07 18:25:23,519 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 483 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=709, Invalid=2261, Unknown=0, NotChecked=0, Total=2970 [2018-11-07 18:25:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39619 states. [2018-11-07 18:25:24,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39619 to 30086. [2018-11-07 18:25:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30086 states. [2018-11-07 18:25:24,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30086 states to 30086 states and 38136 transitions. [2018-11-07 18:25:24,465 INFO L78 Accepts]: Start accepts. Automaton has 30086 states and 38136 transitions. Word has length 246 [2018-11-07 18:25:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:25:24,465 INFO L480 AbstractCegarLoop]: Abstraction has 30086 states and 38136 transitions. [2018-11-07 18:25:24,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 18:25:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 30086 states and 38136 transitions. [2018-11-07 18:25:24,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-11-07 18:25:24,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:25:24,479 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:25:24,480 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:25:24,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:24,480 INFO L82 PathProgramCache]: Analyzing trace with hash -573340042, now seen corresponding path program 1 times [2018-11-07 18:25:24,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:25:24,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:24,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:24,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:25:24,481 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:25:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:25,129 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-11-07 18:25:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 33 proven. 213 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:25:25,662 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:25:25,662 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:25:25,662 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-11-07 18:25:25,663 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [738], [740], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:25:25,669 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:25:25,670 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:25:25,776 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:25:26,628 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:25:26,629 INFO L272 AbstractInterpreter]: Visited 98 different actions 483 times. Merged at 8 different actions 38 times. Never widened. Found 9 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:25:26,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:25:26,667 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:25:26,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:25:26,668 INFO L194 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 [2018-11-07 18:25:26,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:25:26,686 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:25:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:25:26,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:25:27,535 WARN L179 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 21 [2018-11-07 18:25:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-07 18:25:27,616 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:25:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2018-11-07 18:25:28,219 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:25:28,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-11-07 18:25:28,219 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:25:28,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:25:28,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:25:28,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:25:28,222 INFO L87 Difference]: Start difference. First operand 30086 states and 38136 transitions. Second operand 3 states. Received shutdown request... [2018-11-07 18:27:13,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:27:13,055 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:27:13,060 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:27:13,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:13 BoogieIcfgContainer [2018-11-07 18:27:13,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:27:13,062 INFO L168 Benchmark]: Toolchain (without parser) took 233790.52 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 2.3 GB in the end (delta: -889.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:27:13,063 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:27:13,063 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1603.20 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:13,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 274.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -968.0 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:13,065 INFO L168 Benchmark]: Boogie Preprocessor took 200.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:13,067 INFO L168 Benchmark]: RCFGBuilder took 10003.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 470.0 MB). Peak memory consumption was 470.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:13,068 INFO L168 Benchmark]: TraceAbstraction took 221701.98 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -543.0 MB). Peak memory consumption was 944.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:27:13,075 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1603.20 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 274.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -968.0 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.06 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10003.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 470.0 MB). Peak memory consumption was 470.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221701.98 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.3 GB in the end (delta: -543.0 MB). Peak memory consumption was 944.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 35]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 35). Cancelled while BasicCegarLoop was constructing difference of abstraction (30086states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (29077 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 221.6s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 204.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2653 SDtfs, 17569 SDslu, 2507 SDs, 0 SdLazy, 29195 SolverSat, 4939 SolverUnsat, 59 SolverUnknown, 0 SolverNotchecked, 161.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1276 GetRequests, 1174 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30086occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.3s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9962613259139858 AbsIntWeakeningRatio, 0.15083798882681565 AbsIntAvgWeakeningVarsNumRemoved, 22.195530726256983 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 9618 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 1502 NumberOfCodeBlocks, 1502 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1992 ConstructedInterpolants, 105 QuantifiedInterpolants, 2673646 SizeOfPredicates, 10 NumberOfNonLiveVariables, 927 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 786/1198 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown