java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-lit/afnp2014_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:51:30,688 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:51:30,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:51:30,702 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:51:30,702 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:51:30,703 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:51:30,705 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:51:30,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:51:30,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:51:30,709 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:51:30,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:51:30,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:51:30,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:51:30,713 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:51:30,714 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:51:30,715 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:51:30,716 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:51:30,718 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:51:30,720 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:51:30,722 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:51:30,723 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:51:30,724 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:51:30,726 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 15:51:30,735 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 15:51:30,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:51:30,766 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:51:30,767 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:51:30,767 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:51:30,767 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:51:30,768 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:51:30,768 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:51:30,768 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:51:30,768 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:51:30,768 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:51:30,769 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:51:30,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:51:30,770 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:51:30,770 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:51:30,770 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:51:30,770 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:51:30,771 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:51:30,771 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:51:30,772 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:51:30,772 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:51:30,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:51:30,772 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:51:30,773 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:51:30,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:51:30,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:51:30,773 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:51:30,773 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:51:30,774 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:51:30,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:51:30,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:51:30,774 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:51:30,775 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:51:30,775 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:51:30,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:51:30,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:51:30,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:51:30,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:51:30,841 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:51:30,842 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/afnp2014_true-unreach-call_true-termination.c.i [2018-09-14 15:51:31,208 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d7b86d0c/75bcba8ef4e6476a8ecba2a5aa4c1ad8/FLAGea476980c [2018-09-14 15:51:31,354 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:51:31,355 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/afnp2014_true-unreach-call_true-termination.c.i [2018-09-14 15:51:31,360 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d7b86d0c/75bcba8ef4e6476a8ecba2a5aa4c1ad8/FLAGea476980c [2018-09-14 15:51:31,376 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d7b86d0c/75bcba8ef4e6476a8ecba2a5aa4c1ad8 [2018-09-14 15:51:31,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:51:31,393 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:51:31,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:51:31,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:51:31,401 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:51:31,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fcc92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31, skipping insertion in model container [2018-09-14 15:51:31,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,417 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:51:31,644 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:51:31,663 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:51:31,667 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:51:31,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31 WrapperNode [2018-09-14 15:51:31,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:51:31,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:51:31,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:51:31,681 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:51:31,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:51:31,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:51:31,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:51:31,704 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:51:31,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... [2018-09-14 15:51:31,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:51:31,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:51:31,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:51:31,726 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:51:31,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:51:31,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:51:31,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:51:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:51:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:51:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:51:31,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:51:31,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:51:31,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:51:32,153 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:51:32,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:51:32 BoogieIcfgContainer [2018-09-14 15:51:32,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:51:32,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:51:32,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:51:32,172 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:51:32,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:51:31" (1/3) ... [2018-09-14 15:51:32,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e78509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:51:32, skipping insertion in model container [2018-09-14 15:51:32,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:51:31" (2/3) ... [2018-09-14 15:51:32,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e78509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:51:32, skipping insertion in model container [2018-09-14 15:51:32,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:51:32" (3/3) ... [2018-09-14 15:51:32,181 INFO L112 eAbstractionObserver]: Analyzing ICFG afnp2014_true-unreach-call_true-termination.c.i [2018-09-14 15:51:32,204 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:51:32,220 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:51:32,283 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:51:32,284 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:51:32,284 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:51:32,284 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:51:32,284 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:51:32,284 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:51:32,285 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:51:32,285 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:51:32,285 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:51:32,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-14 15:51:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-14 15:51:32,331 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:32,334 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:32,335 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:32,350 INFO L82 PathProgramCache]: Analyzing trace with hash -2008095039, now seen corresponding path program 1 times [2018-09-14 15:51:32,353 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:32,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:32,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:32,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:32,402 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:32,460 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:51:32,460 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:51:32,460 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:51:32,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:51:32,480 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:51:32,481 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:51:32,484 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2018-09-14 15:51:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:32,507 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-09-14 15:51:32,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:51:32,508 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-14 15:51:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:32,519 INFO L225 Difference]: With dead ends: 33 [2018-09-14 15:51:32,519 INFO L226 Difference]: Without dead ends: 14 [2018-09-14 15:51:32,524 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 [2018-09-14 15:51:32,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-14 15:51:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-14 15:51:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-14 15:51:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-09-14 15:51:32,567 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2018-09-14 15:51:32,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:32,567 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-09-14 15:51:32,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:51:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-09-14 15:51:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-14 15:51:32,569 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:32,569 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:32,569 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:32,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1404763780, now seen corresponding path program 1 times [2018-09-14 15:51:32,570 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:32,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:32,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:32,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:32,572 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:32,701 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:51:32,701 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 15:51:32,701 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:51:32,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:51:32,703 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:51:32,703 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:51:32,704 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2018-09-14 15:51:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:32,826 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2018-09-14 15:51:32,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:51:32,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-09-14 15:51:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:32,829 INFO L225 Difference]: With dead ends: 23 [2018-09-14 15:51:32,829 INFO L226 Difference]: Without dead ends: 18 [2018-09-14 15:51:32,830 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:51:32,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-14 15:51:32,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-14 15:51:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-14 15:51:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-09-14 15:51:32,835 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2018-09-14 15:51:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:32,836 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-09-14 15:51:32,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:51:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-09-14 15:51:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-14 15:51:32,837 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:32,837 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:32,841 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:32,841 INFO L82 PathProgramCache]: Analyzing trace with hash 108470830, now seen corresponding path program 1 times [2018-09-14 15:51:32,841 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:32,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:32,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:32,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:32,843 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:33,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:33,031 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:51:33,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:33,042 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:33,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:33,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:33,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:33,386 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:51:33,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:33,415 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:51:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:33,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:33,556 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:33,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:33,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:51:33,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 8 [2018-09-14 15:51:33,596 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:51:33,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 15:51:33,597 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 15:51:33,597 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-09-14 15:51:33,598 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2018-09-14 15:51:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:33,694 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-09-14 15:51:33,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 15:51:33,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-09-14 15:51:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:33,696 INFO L225 Difference]: With dead ends: 27 [2018-09-14 15:51:33,696 INFO L226 Difference]: Without dead ends: 22 [2018-09-14 15:51:33,697 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:51:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-14 15:51:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-14 15:51:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-14 15:51:33,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2018-09-14 15:51:33,702 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 17 [2018-09-14 15:51:33,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:33,703 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-09-14 15:51:33,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 15:51:33,703 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2018-09-14 15:51:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-14 15:51:33,704 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:51:33,704 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:51:33,704 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:51:33,704 INFO L82 PathProgramCache]: Analyzing trace with hash -238722856, now seen corresponding path program 2 times [2018-09-14 15:51:33,705 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:51:33,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:33,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:51:33,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:51:33,706 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:51:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:51:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:33,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:33,826 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:51:33,838 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:51:33,838 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:51:33,865 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:51:33,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:51:33,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:34,011 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:34,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:51:34,159 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:51:34,175 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:51:34,175 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:51:34,200 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:51:34,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:51:34,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:51:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:34,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:51:34,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:51:34,265 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:51:34,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 10 [2018-09-14 15:51:34,265 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:51:34,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-14 15:51:34,266 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-14 15:51:34,266 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:51:34,267 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2018-09-14 15:51:34,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:51:34,321 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2018-09-14 15:51:34,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:51:34,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-09-14 15:51:34,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:51:34,322 INFO L225 Difference]: With dead ends: 22 [2018-09-14 15:51:34,322 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:51:34,322 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-14 15:51:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:51:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:51:34,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:51:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:51:34,323 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-09-14 15:51:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:51:34,324 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:51:34,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-14 15:51:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:51:34,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:51:34,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:51:34,437 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:51:34,437 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:51:34,438 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:51:34,438 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:51:34,438 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:51:34,438 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:51:34,438 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 19) the Hoare annotation is: true [2018-09-14 15:51:34,438 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2018-09-14 15:51:34,439 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-14 15:51:34,439 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2018-09-14 15:51:34,439 INFO L426 ceAbstractionStarter]: For program point L13-1(lines 13 16) no Hoare annotation was computed. [2018-09-14 15:51:34,439 INFO L426 ceAbstractionStarter]: For program point L13-2(line 13) no Hoare annotation was computed. [2018-09-14 15:51:34,439 INFO L426 ceAbstractionStarter]: For program point L13-4(lines 13 16) no Hoare annotation was computed. [2018-09-14 15:51:34,439 INFO L422 ceAbstractionStarter]: At program point L13-6(lines 13 16) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (<= 0 main_~y~0) (<= 1 main_~x~0)) [2018-09-14 15:51:34,440 INFO L422 ceAbstractionStarter]: At program point L13-7(lines 13 16) the Hoare annotation is: (<= main_~y~0 main_~x~0) [2018-09-14 15:51:34,440 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-14 15:51:34,440 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-14 15:51:34,440 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:51:34,440 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-14 15:51:34,441 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-14 15:51:34,441 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:51:34,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:51:34 BoogieIcfgContainer [2018-09-14 15:51:34,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:51:34,455 INFO L168 Benchmark]: Toolchain (without parser) took 3065.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -640.3 MB). Peak memory consumption was 106.8 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:34,457 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-14 15:51:34,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.91 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. [2018-09-14 15:51:34,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.52 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:51:34,460 INFO L168 Benchmark]: Boogie Preprocessor took 21.35 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:51:34,460 INFO L168 Benchmark]: RCFGBuilder took 431.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:34,461 INFO L168 Benchmark]: TraceAbstraction took 2296.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 147.0 MB). Peak memory consumption was 147.0 MB. Max. memory is 7.1 GB. [2018-09-14 15:51:34,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 285.91 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 22.52 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 21.35 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 431.26 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2296.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 147.0 MB). Peak memory consumption was 147.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 13]: Loop Invariant Derived loop invariant: (y <= x && 0 <= y) && 1 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 14 SDslu, 111 SDs, 0 SdLazy, 41 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 18 HoareAnnotationTreeSize, 10 FomulaSimplifications, 26 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 9817 SizeOfPredicates, 12 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 0/80 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/afnp2014_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-51-34-481.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/afnp2014_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-51-34-481.csv Received shutdown request...