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/Problem03_label21_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 00:13:29,307 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 00:13:29,309 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 00:13:29,327 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 00:13:29,327 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 00:13:29,328 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 00:13:29,329 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 00:13:29,331 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 00:13:29,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 00:13:29,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 00:13:29,335 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 00:13:29,335 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 00:13:29,336 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 00:13:29,337 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 00:13:29,340 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 00:13:29,341 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 00:13:29,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 00:13:29,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 00:13:29,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 00:13:29,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 00:13:29,358 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 00:13:29,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 00:13:29,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 00:13:29,375 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 00:13:29,390 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 00:13:29,390 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 00:13:29,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 00:13:29,392 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 00:13:29,392 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 00:13:29,392 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 00:13:29,392 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 00:13:29,392 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 00:13:29,393 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 00:13:29,393 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 00:13:29,393 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 00:13:29,393 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 00:13:29,393 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 00:13:29,394 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 00:13:29,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 00:13:29,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 00:13:29,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 00:13:29,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 00:13:29,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 00:13:29,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 00:13:29,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 00:13:29,396 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 00:13:29,396 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 00:13:29,396 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 00:13:29,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 00:13:29,397 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 00:13:29,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 00:13:29,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 00:13:29,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 00:13:29,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 00:13:29,399 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 00:13:29,399 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 00:13:29,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 00:13:29,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 00:13:29,400 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 00:13:29,400 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 00:13:29,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 00:13:29,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 00:13:29,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 00:13:29,490 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 00:13:29,491 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 00:13:29,491 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label21_true-unreach-call.c [2018-10-25 00:13:29,561 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1560124bd/f6c282743a9449278d29e534d7da2a9f/FLAG73b859790 [2018-10-25 00:13:30,200 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 00:13:30,201 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label21_true-unreach-call.c [2018-10-25 00:13:30,222 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1560124bd/f6c282743a9449278d29e534d7da2a9f/FLAG73b859790 [2018-10-25 00:13:30,244 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1560124bd/f6c282743a9449278d29e534d7da2a9f [2018-10-25 00:13:30,257 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 00:13:30,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 00:13:30,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:30,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 00:13:30,264 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 00:13:30,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:30" (1/1) ... [2018-10-25 00:13:30,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b51a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:30, skipping insertion in model container [2018-10-25 00:13:30,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 12:13:30" (1/1) ... [2018-10-25 00:13:30,279 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 00:13:30,374 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 00:13:31,116 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:31,122 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 00:13:31,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 00:13:31,425 INFO L193 MainTranslator]: Completed translation [2018-10-25 00:13:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31 WrapperNode [2018-10-25 00:13:31,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 00:13:31,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:31,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 00:13:31,428 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 00:13:31,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 00:13:31,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 00:13:31,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 00:13:31,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 00:13:31,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (1/1) ... [2018-10-25 00:13:31,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 00:13:31,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 00:13:31,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 00:13:31,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 00:13:31,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (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 00:13:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 00:13:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 00:13:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 00:13:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 00:13:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 00:13:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 00:13:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 00:13:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 00:13:36,680 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 00:13:36,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:36 BoogieIcfgContainer [2018-10-25 00:13:36,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 00:13:36,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 00:13:36,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 00:13:36,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 00:13:36,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 12:13:30" (1/3) ... [2018-10-25 00:13:36,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b88daa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:36, skipping insertion in model container [2018-10-25 00:13:36,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 12:13:31" (2/3) ... [2018-10-25 00:13:36,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b88daa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 12:13:36, skipping insertion in model container [2018-10-25 00:13:36,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 12:13:36" (3/3) ... [2018-10-25 00:13:36,690 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label21_true-unreach-call.c [2018-10-25 00:13:36,701 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 00:13:36,711 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 00:13:36,729 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 00:13:36,770 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 00:13:36,770 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 00:13:36,771 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 00:13:36,771 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 00:13:36,771 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 00:13:36,771 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 00:13:36,771 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 00:13:36,771 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 00:13:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-25 00:13:36,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-25 00:13:36,826 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:36,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:36,830 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:36,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash 79824004, now seen corresponding path program 1 times [2018-10-25 00:13:36,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:36,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:36,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:36,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:36,903 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:37,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:37,799 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:38,065 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 00:13:38,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:38,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:38,068 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:38,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:38,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:38,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:38,096 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-25 00:13:40,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:40,314 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-25 00:13:40,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:40,317 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-10-25 00:13:40,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:40,343 INFO L225 Difference]: With dead ends: 848 [2018-10-25 00:13:40,343 INFO L226 Difference]: Without dead ends: 534 [2018-10-25 00:13:40,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-25 00:13:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-25 00:13:40,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-25 00:13:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-25 00:13:40,445 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 209 [2018-10-25 00:13:40,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:40,446 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-25 00:13:40,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:40,447 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-25 00:13:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-25 00:13:40,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:40,456 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:13:40,457 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:40,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:40,457 INFO L82 PathProgramCache]: Analyzing trace with hash 909218688, now seen corresponding path program 1 times [2018-10-25 00:13:40,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:40,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:40,460 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:41,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:41,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 00:13:41,065 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:41,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 00:13:41,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 00:13:41,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:41,073 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-25 00:13:42,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:42,898 INFO L93 Difference]: Finished difference Result 1493 states and 2512 transitions. [2018-10-25 00:13:42,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 00:13:42,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2018-10-25 00:13:42,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:42,907 INFO L225 Difference]: With dead ends: 1493 [2018-10-25 00:13:42,908 INFO L226 Difference]: Without dead ends: 967 [2018-10-25 00:13:42,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 00:13:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2018-10-25 00:13:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951. [2018-10-25 00:13:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-10-25 00:13:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions. [2018-10-25 00:13:42,963 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 222 [2018-10-25 00:13:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:42,964 INFO L481 AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions. [2018-10-25 00:13:42,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 00:13:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions. [2018-10-25 00:13:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-10-25 00:13:42,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:42,972 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:42,972 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:42,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:42,973 INFO L82 PathProgramCache]: Analyzing trace with hash 262134433, now seen corresponding path program 1 times [2018-10-25 00:13:42,973 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:42,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:42,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:42,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:42,974 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:43,328 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 00:13:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:43,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:13:43,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:13:43,482 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:43,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:13:43,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:13:43,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:13:43,484 INFO L87 Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states. [2018-10-25 00:13:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:13:46,836 INFO L93 Difference]: Finished difference Result 2784 states and 4694 transitions. [2018-10-25 00:13:46,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 00:13:46,839 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 237 [2018-10-25 00:13:46,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:13:46,854 INFO L225 Difference]: With dead ends: 2784 [2018-10-25 00:13:46,855 INFO L226 Difference]: Without dead ends: 1839 [2018-10-25 00:13:46,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-25 00:13:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2018-10-25 00:13:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809. [2018-10-25 00:13:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1809 states. [2018-10-25 00:13:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions. [2018-10-25 00:13:46,936 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 237 [2018-10-25 00:13:46,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:13:46,937 INFO L481 AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions. [2018-10-25 00:13:46,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:13:46,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions. [2018-10-25 00:13:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-25 00:13:46,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:13:46,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:13:46,949 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:13:46,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:46,949 INFO L82 PathProgramCache]: Analyzing trace with hash -789776746, now seen corresponding path program 1 times [2018-10-25 00:13:46,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:13:46,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:46,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:13:46,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:13:46,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:13:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:13:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:13:47,248 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:13:47,248 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:13:47,249 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-25 00:13:47,251 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:13:47,312 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:13:47,312 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:13:50,161 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:13:50,163 INFO L272 AbstractInterpreter]: Visited 213 different actions 420 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:13:50,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:13:50,209 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:13:52,621 INFO L232 lantSequenceWeakener]: Weakened 253 states. On average, predicates are now at 74.55% of their original sizes. [2018-10-25 00:13:52,621 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:13:53,103 INFO L413 sIntCurrentIteration]: We have 255 unified AI predicates [2018-10-25 00:13:53,104 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:13:53,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:13:53,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-25 00:13:53,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:13:53,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-25 00:13:53,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-25 00:13:53,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-10-25 00:13:53,107 INFO L87 Difference]: Start difference. First operand 1809 states and 2782 transitions. Second operand 20 states. [2018-10-25 00:15:04,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:15:04,539 INFO L93 Difference]: Finished difference Result 4034 states and 6121 transitions. [2018-10-25 00:15:04,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 00:15:04,539 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 256 [2018-10-25 00:15:04,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:15:04,553 INFO L225 Difference]: With dead ends: 4034 [2018-10-25 00:15:04,553 INFO L226 Difference]: Without dead ends: 2231 [2018-10-25 00:15:04,559 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=181, Invalid=631, Unknown=0, NotChecked=0, Total=812 [2018-10-25 00:15:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2018-10-25 00:15:04,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2228. [2018-10-25 00:15:04,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2228 states. [2018-10-25 00:15:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3229 transitions. [2018-10-25 00:15:04,627 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3229 transitions. Word has length 256 [2018-10-25 00:15:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:15:04,628 INFO L481 AbstractCegarLoop]: Abstraction has 2228 states and 3229 transitions. [2018-10-25 00:15:04,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-25 00:15:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3229 transitions. [2018-10-25 00:15:04,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-25 00:15:04,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:15:04,639 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:15:04,640 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:15:04,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:04,640 INFO L82 PathProgramCache]: Analyzing trace with hash 182111589, now seen corresponding path program 1 times [2018-10-25 00:15:04,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:15:04,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:04,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:15:04,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:15:04,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:15:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:15:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:15:04,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:15:04,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:15:04,843 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-25 00:15:04,843 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [73], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:15:04,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:15:04,858 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:15:07,266 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:15:07,266 INFO L272 AbstractInterpreter]: Visited 213 different actions 419 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-25 00:15:07,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:15:07,287 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 00:15:10,808 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 75% of their original sizes. [2018-10-25 00:15:10,808 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:15:18,977 INFO L413 sIntCurrentIteration]: We have 255 unified AI predicates [2018-10-25 00:15:18,977 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 00:15:18,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 00:15:18,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-25 00:15:18,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:15:18,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-25 00:15:18,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-25 00:15:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-10-25 00:15:18,979 INFO L87 Difference]: Start difference. First operand 2228 states and 3229 transitions. Second operand 13 states. [2018-10-25 00:16:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:49,811 INFO L93 Difference]: Finished difference Result 5406 states and 7979 transitions. [2018-10-25 00:16:49,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 00:16:49,811 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 256 [2018-10-25 00:16:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:49,829 INFO L225 Difference]: With dead ends: 5406 [2018-10-25 00:16:49,830 INFO L226 Difference]: Without dead ends: 3603 [2018-10-25 00:16:49,836 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 105 SyntacticMatches, 139 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-10-25 00:16:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3603 states. [2018-10-25 00:16:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3603 to 3596. [2018-10-25 00:16:49,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2018-10-25 00:16:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5061 transitions. [2018-10-25 00:16:49,930 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5061 transitions. Word has length 256 [2018-10-25 00:16:49,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:49,930 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5061 transitions. [2018-10-25 00:16:49,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-25 00:16:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5061 transitions. [2018-10-25 00:16:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-25 00:16:49,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:49,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:16:49,946 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:49,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:49,947 INFO L82 PathProgramCache]: Analyzing trace with hash -337628274, now seen corresponding path program 1 times [2018-10-25 00:16:49,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:49,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:49,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:49,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:49,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:50,551 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-25 00:16:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-25 00:16:51,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 00:16:51,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 00:16:51,096 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 00:16:51,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 00:16:51,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 00:16:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:16:51,098 INFO L87 Difference]: Start difference. First operand 3596 states and 5061 transitions. Second operand 6 states. [2018-10-25 00:16:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:16:52,952 INFO L93 Difference]: Finished difference Result 7280 states and 10629 transitions. [2018-10-25 00:16:52,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-25 00:16:52,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2018-10-25 00:16:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:16:52,973 INFO L225 Difference]: With dead ends: 7280 [2018-10-25 00:16:52,973 INFO L226 Difference]: Without dead ends: 4290 [2018-10-25 00:16:52,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-25 00:16:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4290 states. [2018-10-25 00:16:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 4169. [2018-10-25 00:16:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4169 states. [2018-10-25 00:16:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 5645 transitions. [2018-10-25 00:16:53,091 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 5645 transitions. Word has length 257 [2018-10-25 00:16:53,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:16:53,092 INFO L481 AbstractCegarLoop]: Abstraction has 4169 states and 5645 transitions. [2018-10-25 00:16:53,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 00:16:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 5645 transitions. [2018-10-25 00:16:53,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2018-10-25 00:16:53,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:16:53,112 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:16:53,113 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:16:53,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:53,113 INFO L82 PathProgramCache]: Analyzing trace with hash -632199711, now seen corresponding path program 1 times [2018-10-25 00:16:53,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:16:53,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:53,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:53,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:16:53,115 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:16:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:53,876 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 156 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-25 00:16:53,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:53,876 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:16:53,877 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 338 with the following transitions: [2018-10-25 00:16:53,877 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:16:53,885 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:16:53,885 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:16:59,124 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 00:16:59,124 INFO L272 AbstractInterpreter]: Visited 216 different actions 655 times. Merged at 9 different actions 31 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 4 different actions. Largest state had 88 variables. [2018-10-25 00:16:59,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:16:59,133 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 00:16:59,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:16:59,133 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 00:16:59,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:16:59,144 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 00:16:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:16:59,430 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 00:16:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2018-10-25 00:16:59,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 00:17:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 151 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-25 00:17:00,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 00:17:00,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-25 00:17:00,956 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 00:17:00,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-25 00:17:00,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-25 00:17:00,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-10-25 00:17:00,958 INFO L87 Difference]: Start difference. First operand 4169 states and 5645 transitions. Second operand 12 states. [2018-10-25 00:17:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 00:17:12,656 INFO L93 Difference]: Finished difference Result 20122 states and 31003 transitions. [2018-10-25 00:17:12,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-25 00:17:12,656 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 337 [2018-10-25 00:17:12,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 00:17:12,779 INFO L225 Difference]: With dead ends: 20122 [2018-10-25 00:17:12,779 INFO L226 Difference]: Without dead ends: 16806 [2018-10-25 00:17:12,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1755 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256 [2018-10-25 00:17:12,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16806 states. [2018-10-25 00:17:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16806 to 16372. [2018-10-25 00:17:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16372 states. [2018-10-25 00:17:13,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16372 states to 16372 states and 22819 transitions. [2018-10-25 00:17:13,503 INFO L78 Accepts]: Start accepts. Automaton has 16372 states and 22819 transitions. Word has length 337 [2018-10-25 00:17:13,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 00:17:13,503 INFO L481 AbstractCegarLoop]: Abstraction has 16372 states and 22819 transitions. [2018-10-25 00:17:13,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-25 00:17:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 16372 states and 22819 transitions. [2018-10-25 00:17:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-25 00:17:13,551 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 00:17:13,552 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 00:17:13,552 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 00:17:13,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:13,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1480235973, now seen corresponding path program 1 times [2018-10-25 00:17:13,553 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 00:17:13,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:13,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 00:17:13,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 00:17:13,554 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 00:17:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 00:17:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 00:17:14,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 00:17:14,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 00:17:14,233 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 339 with the following transitions: [2018-10-25 00:17:14,233 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [95], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1133], [1135], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-25 00:17:14,242 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 00:17:14,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 00:17:21,152 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 00:17:21,152 INFO L272 AbstractInterpreter]: Visited 213 different actions 638 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-25 00:17:21,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 00:17:21,157 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... [2018-10-25 00:17:31,282 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 90.7% of their original sizes. [2018-10-25 00:17:31,282 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 00:17:31,296 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 00:17:31,300 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 00:17:31,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 12:17:31 BoogieIcfgContainer [2018-10-25 00:17:31,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 00:17:31,301 INFO L168 Benchmark]: Toolchain (without parser) took 241044.22 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -835.1 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:31,303 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 00:17:31,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1167.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:31,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 312.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -895.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:31,305 INFO L168 Benchmark]: Boogie Preprocessor took 127.40 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:31,306 INFO L168 Benchmark]: RCFGBuilder took 4813.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 265.7 MB). Peak memory consumption was 265.7 MB. Max. memory is 7.1 GB. [2018-10-25 00:17:31,306 INFO L168 Benchmark]: TraceAbstraction took 234618.78 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -295.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-25 00:17:31,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1167.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 312.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -895.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.40 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: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4813.33 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 265.7 MB). Peak memory consumption was 265.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234618.78 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -295.0 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1641]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1641). Cancelled while BasicCegarLoop was analyzing trace of length 339 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 3 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 234.5s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 183.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1432 SDtfs, 14141 SDslu, 2144 SDs, 0 SdLazy, 20001 SolverSat, 3397 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1341 GetRequests, 1068 SyntacticMatches, 146 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2621 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16372occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.5s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9992390849296965 AbsIntWeakeningRatio, 0.2231404958677686 AbsIntAvgWeakeningVarsNumRemoved, 0.6694214876033058 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 613 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2111 NumberOfCodeBlocks, 2111 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2439 ConstructedInterpolants, 0 QuantifiedInterpolants, 2207060 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1454 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 824/896 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown