java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:35:08,364 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:35:08,366 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:35:08,377 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:35:08,378 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:35:08,379 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:35:08,380 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:35:08,382 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:35:08,383 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:35:08,384 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:35:08,385 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:35:08,385 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:35:08,386 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:35:08,387 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:35:08,388 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:35:08,389 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:35:08,390 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:35:08,392 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:35:08,394 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:35:08,395 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:35:08,396 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:35:08,397 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:35:08,400 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 10:35:08,400 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 10:35:08,400 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 10:35:08,401 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 10:35:08,402 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 10:35:08,403 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 10:35:08,404 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 10:35:08,405 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 10:35:08,405 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 10:35:08,406 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 10:35:08,408 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 10:35:08,432 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:35:08,432 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:35:08,436 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:35:08,437 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:35:08,437 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:35:08,437 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:35:08,437 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 10:35:08,437 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:35:08,438 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:35:08,438 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:35:08,438 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:35:08,438 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:35:08,438 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:35:08,442 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 10:35:08,443 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:35:08,443 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:35:08,443 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:35:08,443 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:35:08,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:35:08,444 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:35:08,444 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:35:08,444 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:35:08,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:35:08,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:35:08,445 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:35:08,446 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:35:08,447 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:35:08,447 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:35:08,447 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:35:08,447 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:35:08,448 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:35:08,448 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:35:08,448 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:35:08,449 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:35:08,449 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:35:08,449 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:35:08,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:35:08,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:35:08,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:35:08,521 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:35:08,521 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:35:08,522 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-11-07 10:35:08,586 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ff6444d/24d64519eda349efa043b2776a90676f/FLAGe7f7080c5 [2018-11-07 10:35:09,030 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:35:09,031 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-11-07 10:35:09,045 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ff6444d/24d64519eda349efa043b2776a90676f/FLAGe7f7080c5 [2018-11-07 10:35:09,065 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6ff6444d/24d64519eda349efa043b2776a90676f [2018-11-07 10:35:09,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:35:09,079 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:35:09,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:35:09,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:35:09,085 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:35:09,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5a581e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09, skipping insertion in model container [2018-11-07 10:35:09,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:35:09,124 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:35:09,309 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:35:09,313 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:35:09,327 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:35:09,340 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:35:09,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09 WrapperNode [2018-11-07 10:35:09,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:35:09,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:35:09,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:35:09,341 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:35:09,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:35:09,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:35:09,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:35:09,363 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:35:09,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... [2018-11-07 10:35:09,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:35:09,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:35:09,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:35:09,386 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:35:09,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:35:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:35:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:35:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:35:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:35:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:35:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:35:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 10:35:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 10:35:09,685 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:35:09,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:35:09 BoogieIcfgContainer [2018-11-07 10:35:09,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:35:09,687 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:35:09,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:35:09,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:35:09,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:35:09" (1/3) ... [2018-11-07 10:35:09,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340c2b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:35:09, skipping insertion in model container [2018-11-07 10:35:09,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:35:09" (2/3) ... [2018-11-07 10:35:09,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340c2b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:35:09, skipping insertion in model container [2018-11-07 10:35:09,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:35:09" (3/3) ... [2018-11-07 10:35:09,694 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call2_true-termination.i [2018-11-07 10:35:09,703 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:35:09,711 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:35:09,728 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:35:09,763 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:35:09,763 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:35:09,763 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:35:09,763 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:35:09,764 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:35:09,764 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:35:09,764 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:35:09,764 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:35:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-07 10:35:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-07 10:35:09,790 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:35:09,791 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:35:09,794 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:35:09,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:35:09,801 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-07 10:35:09,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:35:09,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:09,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:35:09,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:09,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:35:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:35:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:35:09,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:35:09,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 10:35:09,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:35:09,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 10:35:09,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 10:35:09,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 10:35:09,941 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-07 10:35:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:35:09,966 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-07 10:35:09,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 10:35:09,968 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-07 10:35:09,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:35:09,982 INFO L225 Difference]: With dead ends: 29 [2018-11-07 10:35:09,982 INFO L226 Difference]: Without dead ends: 12 [2018-11-07 10:35:09,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 10:35:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-07 10:35:10,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-07 10:35:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-07 10:35:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-07 10:35:10,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-07 10:35:10,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:35:10,028 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-07 10:35:10,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 10:35:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-07 10:35:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-07 10:35:10,029 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:35:10,029 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:35:10,030 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:35:10,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:35:10,030 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-11-07 10:35:10,030 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:35:10,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:10,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:35:10,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:10,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:35:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:35:10,212 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-11-07 10:35:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:35:10,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:35:10,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:35:10,250 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:35:10,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:35:10,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:35:10,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:35:10,256 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-07 10:35:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:35:10,353 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-07 10:35:10,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:35:10,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-07 10:35:10,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:35:10,356 INFO L225 Difference]: With dead ends: 19 [2018-11-07 10:35:10,356 INFO L226 Difference]: Without dead ends: 14 [2018-11-07 10:35:10,358 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:35:10,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-07 10:35:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-07 10:35:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-07 10:35:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-07 10:35:10,365 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-07 10:35:10,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:35:10,365 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-07 10:35:10,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:35:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-07 10:35:10,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 10:35:10,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:35:10,367 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:35:10,367 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:35:10,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:35:10,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1625028318, now seen corresponding path program 1 times [2018-11-07 10:35:10,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:35:10,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:10,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:35:10,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:10,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:35:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:35:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:35:10,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:35:10,564 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:35:10,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-11-07 10:35:10,569 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [20], [23], [25], [31], [32], [33], [35] [2018-11-07 10:35:10,603 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 10:35:10,603 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:35:10,739 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:35:10,740 INFO L272 AbstractInterpreter]: Visited 12 different actions 18 times. Merged at 2 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 3 variables. [2018-11-07 10:35:10,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:35:10,767 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:35:10,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:35:10,767 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:35:10,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:35:10,790 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:35:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:35:10,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:35:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:35:10,863 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:35:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:35:11,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 10:35:11,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7] total 9 [2018-11-07 10:35:11,165 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 10:35:11,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 10:35:11,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 10:35:11,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:35:11,167 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-11-07 10:35:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:35:11,227 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-07 10:35:11,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 10:35:11,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-07 10:35:11,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:35:11,229 INFO L225 Difference]: With dead ends: 21 [2018-11-07 10:35:11,229 INFO L226 Difference]: Without dead ends: 16 [2018-11-07 10:35:11,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:35:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-07 10:35:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-07 10:35:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-07 10:35:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-07 10:35:11,234 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-07 10:35:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:35:11,235 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-07 10:35:11,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 10:35:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-07 10:35:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 10:35:11,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:35:11,236 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:35:11,236 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:35:11,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:35:11,236 INFO L82 PathProgramCache]: Analyzing trace with hash -720896604, now seen corresponding path program 2 times [2018-11-07 10:35:11,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:35:11,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:11,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:35:11,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:35:11,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:35:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:35:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:35:11,517 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:35:11,517 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:35:11,517 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 10:35:11,518 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 10:35:11,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:35:11,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:35:11,527 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 10:35:11,528 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 10:35:11,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 10:35:11,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 10:35:11,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:35:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 10:35:11,674 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:35:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 10:35:11,899 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:35:11,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [5] total 12 [2018-11-07 10:35:11,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:35:11,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 10:35:11,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 10:35:11,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-07 10:35:11,901 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2018-11-07 10:35:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:35:12,063 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-07 10:35:12,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 10:35:12,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-11-07 10:35:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:35:12,064 INFO L225 Difference]: With dead ends: 16 [2018-11-07 10:35:12,064 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 10:35:12,066 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-07 10:35:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 10:35:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 10:35:12,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 10:35:12,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 10:35:12,067 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-07 10:35:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:35:12,067 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 10:35:12,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 10:35:12,068 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 10:35:12,068 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 10:35:12,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 10:35:12,143 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 10:35:12,143 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:35:12,143 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:35:12,143 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 10:35:12,144 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 10:35:12,144 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 10:35:12,144 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-11-07 10:35:12,144 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-11-07 10:35:12,144 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-11-07 10:35:12,144 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-11-07 10:35:12,145 INFO L421 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (and (<= main_~x~0 0) (<= 0 main_~x~0)) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) [2018-11-07 10:35:12,145 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 14) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967295) 4294967296) 6) (<= 6 (mod main_~x~0 4294967296))) [2018-11-07 10:35:12,145 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-07 10:35:12,145 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-07 10:35:12,145 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-07 10:35:12,145 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-07 10:35:12,146 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-07 10:35:12,146 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-07 10:35:12,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:35:12 BoogieIcfgContainer [2018-11-07 10:35:12,157 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 10:35:12,158 INFO L168 Benchmark]: Toolchain (without parser) took 3080.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -652.7 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2018-11-07 10:35:12,159 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:35:12,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.32 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 10:35:12,161 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:35:12,161 INFO L168 Benchmark]: Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:35:12,162 INFO L168 Benchmark]: RCFGBuilder took 300.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2018-11-07 10:35:12,163 INFO L168 Benchmark]: TraceAbstraction took 2469.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 108.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. [2018-11-07 10:35:12,168 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.32 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 21.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 300.43 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.7 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2469.89 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 108.5 MB). Peak memory consumption was 108.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || (x + 4294967295) % 4294967296 < 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 50 SDtfs, 2 SDslu, 51 SDs, 0 SdLazy, 22 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 33 HoareAnnotationTreeSize, 10 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 77 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 4077 SizeOfPredicates, 3 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...