java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:54:48,247 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:54:48,254 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:54:48,267 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:54:48,267 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:54:48,268 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:54:48,269 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:54:48,271 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:54:48,273 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:54:48,274 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:54:48,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:54:48,275 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:54:48,276 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:54:48,277 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:54:48,278 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:54:48,279 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:54:48,280 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:54:48,282 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:54:48,284 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:54:48,285 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:54:48,287 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:54:48,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:54:48,291 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:54:48,300 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:54:48,334 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:54:48,335 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:54:48,338 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:54:48,338 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:54:48,339 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:54:48,339 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:54:48,339 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:54:48,339 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:54:48,339 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:54:48,340 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:54:48,340 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:54:48,340 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:54:48,340 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:54:48,340 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:54:48,342 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:54:48,342 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:54:48,342 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:54:48,342 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:54:48,343 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:54:48,344 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:54:48,345 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:54:48,345 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:54:48,345 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:54:48,345 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:54:48,345 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:54:48,346 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:54:48,346 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:54:48,346 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:54:48,346 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:54:48,347 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:54:48,347 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:54:48,347 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:54:48,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:54:48,347 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:54:48,348 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:54:48,348 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:54:48,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:54:48,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:54:48,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:54:48,424 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:54:48,424 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:54:48,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02_true-unreach-call.c [2018-10-25 01:54:48,478 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0805547a6/a485c7365c34416d98ad53bad5eddc46/FLAG19a8be511 [2018-10-25 01:54:49,219 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:54:49,221 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label02_true-unreach-call.c [2018-10-25 01:54:49,255 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0805547a6/a485c7365c34416d98ad53bad5eddc46/FLAG19a8be511 [2018-10-25 01:54:49,275 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0805547a6/a485c7365c34416d98ad53bad5eddc46 [2018-10-25 01:54:49,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:54:49,287 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:54:49,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:49,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:54:49,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:54:49,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:49" (1/1) ... [2018-10-25 01:54:49,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:49, skipping insertion in model container [2018-10-25 01:54:49,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:54:49" (1/1) ... [2018-10-25 01:54:49,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:54:49,416 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:54:50,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:50,363 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:54:50,773 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:54:50,799 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:54:50,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50 WrapperNode [2018-10-25 01:54:50,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:54:50,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:50,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:54:50,801 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:54:50,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:50,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:54:51,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:54:51,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:54:51,291 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:54:51,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... [2018-10-25 01:54:51,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:54:51,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:54:51,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:54:51,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:54:51,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:54:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:54:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:54:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:54:51,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:54:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:54:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:54:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:54:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:54:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:54:51,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:55:06,431 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:55:06,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:06 BoogieIcfgContainer [2018-10-25 01:55:06,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:55:06,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:55:06,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:55:06,437 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:55:06,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:54:49" (1/3) ... [2018-10-25 01:55:06,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ddbcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:06, skipping insertion in model container [2018-10-25 01:55:06,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:54:50" (2/3) ... [2018-10-25 01:55:06,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ddbcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:55:06, skipping insertion in model container [2018-10-25 01:55:06,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:55:06" (3/3) ... [2018-10-25 01:55:06,444 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label02_true-unreach-call.c [2018-10-25 01:55:06,458 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:55:06,478 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:55:06,497 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:55:06,549 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:55:06,549 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:55:06,549 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:55:06,550 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:55:06,550 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:55:06,550 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:55:06,550 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:55:06,551 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:55:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 01:55:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-25 01:55:06,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:06,601 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:06,604 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:06,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:06,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1150781316, now seen corresponding path program 1 times [2018-10-25 01:55:06,617 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:06,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:06,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:06,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:06,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:07,248 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-25 01:55:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:07,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:07,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:55:07,273 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:07,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:55:07,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:55:07,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:07,303 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 01:55:16,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:16,755 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-10-25 01:55:16,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:55:16,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-10-25 01:55:16,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:16,800 INFO L225 Difference]: With dead ends: 2162 [2018-10-25 01:55:16,800 INFO L226 Difference]: Without dead ends: 1552 [2018-10-25 01:55:16,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:55:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-10-25 01:55:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-10-25 01:55:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-10-25 01:55:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-10-25 01:55:17,001 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 60 [2018-10-25 01:55:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:17,002 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-10-25 01:55:17,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:55:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-10-25 01:55:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-25 01:55:17,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:17,014 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:17,014 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:17,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:17,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1301087830, now seen corresponding path program 1 times [2018-10-25 01:55:17,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:17,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:17,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:17,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:17,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:17,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:17,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:55:17,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:17,514 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:55:17,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:55:17,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:55:17,516 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-10-25 01:55:36,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:36,719 INFO L93 Difference]: Finished difference Result 5786 states and 10682 transitions. [2018-10-25 01:55:36,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:55:36,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-25 01:55:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:36,761 INFO L225 Difference]: With dead ends: 5786 [2018-10-25 01:55:36,762 INFO L226 Difference]: Without dead ends: 4267 [2018-10-25 01:55:36,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:55:36,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-10-25 01:55:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4243. [2018-10-25 01:55:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2018-10-25 01:55:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 6364 transitions. [2018-10-25 01:55:36,945 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 6364 transitions. Word has length 139 [2018-10-25 01:55:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:36,946 INFO L481 AbstractCegarLoop]: Abstraction has 4243 states and 6364 transitions. [2018-10-25 01:55:36,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:55:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 6364 transitions. [2018-10-25 01:55:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-25 01:55:36,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:36,952 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:55:36,953 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:36,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:36,955 INFO L82 PathProgramCache]: Analyzing trace with hash 587930970, now seen corresponding path program 1 times [2018-10-25 01:55:36,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:36,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:36,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:36,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:36,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:37,188 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:55:37,189 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:55:37,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:55:37,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:55:37,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:55:37,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:55:37,190 INFO L87 Difference]: Start difference. First operand 4243 states and 6364 transitions. Second operand 6 states. [2018-10-25 01:55:43,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:55:43,135 INFO L93 Difference]: Finished difference Result 12712 states and 20711 transitions. [2018-10-25 01:55:43,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:55:43,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-10-25 01:55:43,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:55:43,205 INFO L225 Difference]: With dead ends: 12712 [2018-10-25 01:55:43,206 INFO L226 Difference]: Without dead ends: 8475 [2018-10-25 01:55:43,231 INFO L605 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 [2018-10-25 01:55:43,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8475 states. [2018-10-25 01:55:43,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8475 to 8390. [2018-10-25 01:55:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8390 states. [2018-10-25 01:55:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 12586 transitions. [2018-10-25 01:55:43,500 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 12586 transitions. Word has length 140 [2018-10-25 01:55:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:55:43,501 INFO L481 AbstractCegarLoop]: Abstraction has 8390 states and 12586 transitions. [2018-10-25 01:55:43,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:55:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 12586 transitions. [2018-10-25 01:55:43,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-25 01:55:43,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:55:43,506 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-25 01:55:43,507 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:55:43,507 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:43,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1560360268, now seen corresponding path program 1 times [2018-10-25 01:55:43,507 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:55:43,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:43,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:43,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:55:43,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:55:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:43,846 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:55:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-25 01:55:43,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:43,962 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:55:43,963 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-25 01:55:43,965 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:55:44,025 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:55:44,025 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:55:45,700 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:55:45,702 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:55:45,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:55:45,745 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:55:45,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:55:45,745 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:55:45,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:55:45,759 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:55:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:55:45,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:55:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:46,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:55:47,212 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:55:47,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:55:47,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 01:55:47,244 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:55:47,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:55:47,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:55:47,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-25 01:55:47,245 INFO L87 Difference]: Start difference. First operand 8390 states and 12586 transitions. Second operand 9 states. [2018-10-25 01:56:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:01,136 INFO L93 Difference]: Finished difference Result 20874 states and 31702 transitions. [2018-10-25 01:56:01,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 01:56:01,136 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2018-10-25 01:56:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:01,234 INFO L225 Difference]: With dead ends: 20874 [2018-10-25 01:56:01,235 INFO L226 Difference]: Without dead ends: 12465 [2018-10-25 01:56:01,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-10-25 01:56:01,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12465 states. [2018-10-25 01:56:01,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12465 to 12440. [2018-10-25 01:56:01,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12440 states. [2018-10-25 01:56:01,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12440 states to 12440 states and 16001 transitions. [2018-10-25 01:56:01,710 INFO L78 Accepts]: Start accepts. Automaton has 12440 states and 16001 transitions. Word has length 214 [2018-10-25 01:56:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:01,711 INFO L481 AbstractCegarLoop]: Abstraction has 12440 states and 16001 transitions. [2018-10-25 01:56:01,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:56:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 12440 states and 16001 transitions. [2018-10-25 01:56:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-10-25 01:56:01,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:01,720 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:01,721 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:01,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:01,721 INFO L82 PathProgramCache]: Analyzing trace with hash 331270812, now seen corresponding path program 1 times [2018-10-25 01:56:01,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:01,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:01,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:01,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:01,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:02,117 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 01:56:02,709 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 117 proven. 61 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-25 01:56:02,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:02,710 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:56:02,710 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-10-25 01:56:02,710 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:56:02,716 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:56:02,717 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:56:03,322 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:56:03,323 INFO L272 AbstractInterpreter]: Visited 97 different actions 293 times. Merged at 7 different actions 25 times. Widened at 1 different actions 1 times. Found 3 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 01:56:03,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:03,366 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:56:03,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:03,367 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:56:03,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:03,380 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:56:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:03,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:56:03,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:56:03,963 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:56:03,984 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:56:03,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 01:56:03,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:56:03,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 01:56:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 01:56:03,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:56:03,986 INFO L87 Difference]: Start difference. First operand 12440 states and 16001 transitions. Second operand 3 states. [2018-10-25 01:56:08,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:08,355 INFO L93 Difference]: Finished difference Result 24874 states and 31996 transitions. [2018-10-25 01:56:08,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 01:56:08,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2018-10-25 01:56:08,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:08,409 INFO L225 Difference]: With dead ends: 24874 [2018-10-25 01:56:08,409 INFO L226 Difference]: Without dead ends: 12440 [2018-10-25 01:56:08,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 454 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:56:08,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12440 states. [2018-10-25 01:56:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12440 to 12440. [2018-10-25 01:56:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12440 states. [2018-10-25 01:56:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12440 states to 12440 states and 15375 transitions. [2018-10-25 01:56:08,721 INFO L78 Accepts]: Start accepts. Automaton has 12440 states and 15375 transitions. Word has length 227 [2018-10-25 01:56:08,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:08,722 INFO L481 AbstractCegarLoop]: Abstraction has 12440 states and 15375 transitions. [2018-10-25 01:56:08,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 01:56:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12440 states and 15375 transitions. [2018-10-25 01:56:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-25 01:56:08,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:08,733 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:08,733 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:08,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:08,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1376012018, now seen corresponding path program 1 times [2018-10-25 01:56:08,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:08,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:08,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:08,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:08,735 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:09,338 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:56:09,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:09,338 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:56:09,339 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 305 with the following transitions: [2018-10-25 01:56:09,339 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:56:09,343 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:56:09,343 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:56:09,770 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:56:09,770 INFO L272 AbstractInterpreter]: Visited 98 different actions 197 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:56:09,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:09,792 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:56:09,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:09,793 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:56:09,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:09,805 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:56:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:09,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:10,020 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:56:10,020 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:56:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-25 01:56:10,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:56:10,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-25 01:56:10,561 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:56:10,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 01:56:10,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 01:56:10,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:56:10,562 INFO L87 Difference]: Start difference. First operand 12440 states and 15375 transitions. Second operand 7 states. [2018-10-25 01:56:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:24,896 INFO L93 Difference]: Finished difference Result 37415 states and 46847 transitions. [2018-10-25 01:56:24,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 01:56:24,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2018-10-25 01:56:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:24,983 INFO L225 Difference]: With dead ends: 37415 [2018-10-25 01:56:24,983 INFO L226 Difference]: Without dead ends: 24937 [2018-10-25 01:56:25,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 610 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-10-25 01:56:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24937 states. [2018-10-25 01:56:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24937 to 22775. [2018-10-25 01:56:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22775 states. [2018-10-25 01:56:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22775 states to 22775 states and 27258 transitions. [2018-10-25 01:56:25,572 INFO L78 Accepts]: Start accepts. Automaton has 22775 states and 27258 transitions. Word has length 304 [2018-10-25 01:56:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:25,573 INFO L481 AbstractCegarLoop]: Abstraction has 22775 states and 27258 transitions. [2018-10-25 01:56:25,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 01:56:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 22775 states and 27258 transitions. [2018-10-25 01:56:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-25 01:56:25,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:25,793 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:25,793 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:25,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:25,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1730216867, now seen corresponding path program 1 times [2018-10-25 01:56:25,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:25,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:25,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:25,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:25,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 169 proven. 146 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-25 01:56:26,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:26,766 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:56:26,766 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-10-25 01:56:26,767 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [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], [1443], [1448], [1450], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:56:26,774 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:56:26,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:56:27,118 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:56:27,118 INFO L272 AbstractInterpreter]: Visited 135 different actions 269 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:56:27,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:27,148 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:56:27,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:56:27,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-25 01:56:27,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:27,162 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:56:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:27,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:56:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 264 proven. 2 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2018-10-25 01:56:29,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:56:32,320 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 39 DAG size of output: 15 [2018-10-25 01:56:32,806 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-25 01:56:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 169 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:56:33,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:56:33,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2018-10-25 01:56:33,419 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:56:33,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 01:56:33,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 01:56:33,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=146, Unknown=1, NotChecked=0, Total=210 [2018-10-25 01:56:33,421 INFO L87 Difference]: Start difference. First operand 22775 states and 27258 transitions. Second operand 10 states. [2018-10-25 01:56:51,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:56:51,462 INFO L93 Difference]: Finished difference Result 74220 states and 96701 transitions. [2018-10-25 01:56:51,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-25 01:56:51,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 350 [2018-10-25 01:56:51,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:56:51,692 INFO L225 Difference]: With dead ends: 74220 [2018-10-25 01:56:51,692 INFO L226 Difference]: Without dead ends: 48821 [2018-10-25 01:56:51,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 705 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=210, Invalid=491, Unknown=1, NotChecked=0, Total=702 [2018-10-25 01:56:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48821 states. [2018-10-25 01:56:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48821 to 41069. [2018-10-25 01:56:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41069 states. [2018-10-25 01:56:53,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41069 states to 41069 states and 50196 transitions. [2018-10-25 01:56:53,205 INFO L78 Accepts]: Start accepts. Automaton has 41069 states and 50196 transitions. Word has length 350 [2018-10-25 01:56:53,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:56:53,206 INFO L481 AbstractCegarLoop]: Abstraction has 41069 states and 50196 transitions. [2018-10-25 01:56:53,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-25 01:56:53,206 INFO L276 IsEmpty]: Start isEmpty. Operand 41069 states and 50196 transitions. [2018-10-25 01:56:53,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-25 01:56:53,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:56:53,226 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:56:53,226 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:56:53,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:56:53,227 INFO L82 PathProgramCache]: Analyzing trace with hash -415218559, now seen corresponding path program 1 times [2018-10-25 01:56:53,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:56:53,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:53,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:56:53,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:56:53,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:56:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:56:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2018-10-25 01:56:53,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:56:53,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:56:53,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:56:53,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:56:53,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:56:53,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:56:53,614 INFO L87 Difference]: Start difference. First operand 41069 states and 50196 transitions. Second operand 4 states. [2018-10-25 01:57:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:57:02,632 INFO L93 Difference]: Finished difference Result 107419 states and 135188 transitions. [2018-10-25 01:57:02,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:57:02,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 387 [2018-10-25 01:57:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:57:02,894 INFO L225 Difference]: With dead ends: 107419 [2018-10-25 01:57:02,894 INFO L226 Difference]: Without dead ends: 65848 [2018-10-25 01:57:03,028 INFO L605 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 [2018-10-25 01:57:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65848 states. [2018-10-25 01:57:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65848 to 65363. [2018-10-25 01:57:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65363 states. [2018-10-25 01:57:04,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65363 states to 65363 states and 81358 transitions. [2018-10-25 01:57:04,900 INFO L78 Accepts]: Start accepts. Automaton has 65363 states and 81358 transitions. Word has length 387 [2018-10-25 01:57:04,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:57:04,902 INFO L481 AbstractCegarLoop]: Abstraction has 65363 states and 81358 transitions. [2018-10-25 01:57:04,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:57:04,902 INFO L276 IsEmpty]: Start isEmpty. Operand 65363 states and 81358 transitions. [2018-10-25 01:57:04,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-25 01:57:04,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:57:04,931 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:57:04,931 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:57:04,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:04,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2108854852, now seen corresponding path program 1 times [2018-10-25 01:57:04,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:57:04,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:04,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:04,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:57:04,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:57:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 167 proven. 229 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:57:06,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:06,531 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:57:06,532 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 401 with the following transitions: [2018-10-25 01:57:06,532 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1090], [1092], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [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], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1725], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 01:57:06,537 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:57:06,538 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:57:06,975 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:57:06,975 INFO L272 AbstractInterpreter]: Visited 185 different actions 369 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 01:57:07,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:57:07,013 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:57:07,013 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:57:07,013 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:57:07,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:57:07,024 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:57:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:57:07,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:57:13,675 WARN L179 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 80 DAG size of output: 21 [2018-10-25 01:57:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 292 proven. 55 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-10-25 01:57:14,566 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:57:15,415 WARN L179 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2018-10-25 01:57:17,554 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2018-10-25 01:57:17,613 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2018-10-25 01:57:19,689 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 108 [2018-10-25 01:57:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 169 proven. 227 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 01:57:20,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:57:20,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 30 [2018-10-25 01:57:20,981 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:57:20,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-25 01:57:20,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-25 01:57:20,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2018-10-25 01:57:20,983 INFO L87 Difference]: Start difference. First operand 65363 states and 81358 transitions. Second operand 22 states. [2018-10-25 01:57:22,788 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2018-10-25 01:57:27,757 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2018-10-25 01:57:33,854 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2018-10-25 01:57:34,313 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2018-10-25 01:57:36,004 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-10-25 01:57:40,842 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-10-25 01:57:41,218 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-10-25 01:57:42,393 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2018-10-25 01:57:42,535 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2018-10-25 01:57:43,758 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2018-10-25 01:57:44,670 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2018-10-25 01:57:45,573 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2018-10-25 01:57:47,702 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2018-10-25 01:57:50,685 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2018-10-25 01:57:51,697 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 48 [2018-10-25 01:57:55,222 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 49 [2018-10-25 01:57:59,508 WARN L179 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2018-10-25 01:58:02,636 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 41 [2018-10-25 01:58:06,353 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-10-25 01:58:07,016 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-25 01:58:14,079 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2018-10-25 01:58:17,129 WARN L179 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-10-25 01:58:19,910 WARN L179 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2018-10-25 01:58:22,132 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2018-10-25 01:58:22,511 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2018-10-25 01:58:23,047 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2018-10-25 01:58:25,447 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2018-10-25 01:58:26,446 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2018-10-25 01:58:27,240 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2018-10-25 01:58:31,157 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2018-10-25 01:58:36,505 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 Received shutdown request... [2018-10-25 01:58:48,748 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-10-25 01:58:48,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-25 01:58:48,749 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:58:48,754 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:58:48,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:58:48 BoogieIcfgContainer [2018-10-25 01:58:48,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:58:48,755 INFO L168 Benchmark]: Toolchain (without parser) took 239468.76 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-25 01:58:48,756 INFO L168 Benchmark]: CDTParser took 0.15 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. [2018-10-25 01:58:48,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1511.36 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. [2018-10-25 01:58:48,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 490.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -918.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:48,758 INFO L168 Benchmark]: Boogie Preprocessor took 282.39 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:48,759 INFO L168 Benchmark]: RCFGBuilder took 14858.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.0 MB). Peak memory consumption was 473.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:48,760 INFO L168 Benchmark]: TraceAbstraction took 222321.03 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -891.9 MB). Peak memory consumption was 693.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:58:48,765 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1511.36 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 490.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -918.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 282.39 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14858.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 473.0 MB). Peak memory consumption was 473.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222321.03 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -891.9 MB). Peak memory consumption was 693.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 167]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 167). Cancelled while BasicCegarLoop was constructing difference of abstraction (65363states) and FLOYD_HOARE automaton (currently 152 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 69. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 222.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 183.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2574 SDtfs, 36196 SDslu, 4470 SDs, 0 SdLazy, 56911 SolverSat, 12151 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 136.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3369 GetRequests, 3105 SyntacticMatches, 15 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11514 ImplicationChecksByTransitivity, 46.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65363occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 10560 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 3716 NumberOfCodeBlocks, 3716 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 5192 ConstructedInterpolants, 191 QuantifiedInterpolants, 10889558 SizeOfPredicates, 22 NumberOfNonLiveVariables, 2575 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 4269/5231 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown