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/loops/string_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:45:57,687 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:45:57,690 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:45:57,709 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:45:57,710 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:45:57,711 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:45:57,712 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:45:57,714 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:45:57,716 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:45:57,717 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:45:57,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:45:57,718 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:45:57,720 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:45:57,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:45:57,722 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:45:57,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:45:57,724 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:45:57,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:45:57,727 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:45:57,729 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:45:57,730 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:45:57,732 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:45:57,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 15:45:57,745 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 15:45:57,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 15:45:57,747 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 15:45:57,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 15:45:57,748 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 15:45:57,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:45:57,781 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:45:57,782 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:45:57,782 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:45:57,782 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:45:57,783 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:45:57,783 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:45:57,783 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:45:57,784 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:45:57,784 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:45:57,784 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:45:57,785 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:45:57,786 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:45:57,786 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:45:57,786 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:45:57,786 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:45:57,786 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:45:57,787 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:45:57,787 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:45:57,787 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:45:57,787 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:45:57,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:45:57,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:45:57,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:45:57,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:45:57,790 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:45:57,790 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:45:57,790 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:45:57,791 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:45:57,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:45:57,791 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:45:57,791 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:45:57,792 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:45:57,861 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:45:57,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:45:57,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:45:57,883 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:45:57,884 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:45:57,884 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string_true-unreach-call_true-termination.i [2018-09-14 15:45:58,238 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18096a695/5420b1f923a344348c9b52e1c690f047/FLAG3f0101d90 [2018-09-14 15:45:58,412 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:45:58,412 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string_true-unreach-call_true-termination.i [2018-09-14 15:45:58,420 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18096a695/5420b1f923a344348c9b52e1c690f047/FLAG3f0101d90 [2018-09-14 15:45:58,435 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18096a695/5420b1f923a344348c9b52e1c690f047 [2018-09-14 15:45:58,447 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:45:58,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:45:58,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:45:58,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:45:58,464 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:45:58,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ecc5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58, skipping insertion in model container [2018-09-14 15:45:58,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,481 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:45:58,749 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:45:58,769 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:45:58,783 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:45:58,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58 WrapperNode [2018-09-14 15:45:58,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:45:58,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:45:58,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:45:58,802 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:45:58,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,828 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:45:58,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:45:58,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:45:58,829 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:45:58,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (1/1) ... [2018-09-14 15:45:58,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:45:58,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:45:58,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:45:58,876 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:45:58,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (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 15:45:59,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:45:59,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:45:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:45:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:45:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:45:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:45:59,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:45:59,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:45:59,492 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:45:59,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:45:59 BoogieIcfgContainer [2018-09-14 15:45:59,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:45:59,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:45:59,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:45:59,498 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:45:59,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:45:58" (1/3) ... [2018-09-14 15:45:59,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381cbb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:45:59, skipping insertion in model container [2018-09-14 15:45:59,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:45:58" (2/3) ... [2018-09-14 15:45:59,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@381cbb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:45:59, skipping insertion in model container [2018-09-14 15:45:59,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:45:59" (3/3) ... [2018-09-14 15:45:59,502 INFO L112 eAbstractionObserver]: Analyzing ICFG string_true-unreach-call_true-termination.i [2018-09-14 15:45:59,512 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:45:59,521 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:45:59,571 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:45:59,572 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:45:59,572 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:45:59,573 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:45:59,573 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:45:59,573 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:45:59,573 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:45:59,573 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:45:59,574 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:45:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-09-14 15:45:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-14 15:45:59,600 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:45:59,601 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:45:59,602 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:45:59,607 INFO L82 PathProgramCache]: Analyzing trace with hash 511662962, now seen corresponding path program 1 times [2018-09-14 15:45:59,609 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:45:59,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:59,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:59,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:59,656 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:45:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:59,712 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 15:45:59,714 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:45:59,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:45:59,714 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:45:59,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:45:59,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:45:59,731 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:45:59,733 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-09-14 15:45:59,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:45:59,760 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2018-09-14 15:45:59,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:45:59,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-14 15:45:59,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:45:59,771 INFO L225 Difference]: With dead ends: 62 [2018-09-14 15:45:59,771 INFO L226 Difference]: Without dead ends: 28 [2018-09-14 15:45:59,775 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 15:45:59,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-14 15:45:59,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-09-14 15:45:59,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-14 15:45:59,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-09-14 15:45:59,811 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 19 [2018-09-14 15:45:59,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:45:59,811 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-09-14 15:45:59,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:45:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-09-14 15:45:59,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-14 15:45:59,813 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:45:59,813 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:45:59,813 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:45:59,814 INFO L82 PathProgramCache]: Analyzing trace with hash 696326523, now seen corresponding path program 1 times [2018-09-14 15:45:59,814 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:45:59,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:59,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:45:59,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:45:59,816 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:45:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:45:59,875 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 15:45:59,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:45:59,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 15:45:59,876 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:45:59,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 15:45:59,878 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 15:45:59,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 15:45:59,879 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-09-14 15:46:00,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:00,053 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2018-09-14 15:46:00,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 15:46:00,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-09-14 15:46:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:00,057 INFO L225 Difference]: With dead ends: 59 [2018-09-14 15:46:00,058 INFO L226 Difference]: Without dead ends: 39 [2018-09-14 15:46:00,059 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 15:46:00,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-14 15:46:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-09-14 15:46:00,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-14 15:46:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-09-14 15:46:00,067 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 24 [2018-09-14 15:46:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:00,067 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-09-14 15:46:00,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 15:46:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-09-14 15:46:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-14 15:46:00,069 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:00,069 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:00,069 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:00,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1830123429, now seen corresponding path program 1 times [2018-09-14 15:46:00,070 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:00,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:00,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:00,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:00,071 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:00,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-14 15:46:00,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:00,121 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 15:46:00,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:00,139 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:46:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:00,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-14 15:46:00,207 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-14 15:46:00,405 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:00,405 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 15:46:00,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:00,422 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:46:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:00,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-14 15:46:00,474 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (3)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 15:46:00,548 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:46:00,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-09-14 15:46:00,549 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:46:00,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 15:46:00,550 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 15:46:00,551 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:46:00,551 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 4 states. [2018-09-14 15:46:00,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:00,795 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2018-09-14 15:46:00,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 15:46:00,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-09-14 15:46:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:00,797 INFO L225 Difference]: With dead ends: 72 [2018-09-14 15:46:00,797 INFO L226 Difference]: Without dead ends: 50 [2018-09-14 15:46:00,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:46:00,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-14 15:46:00,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2018-09-14 15:46:00,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-14 15:46:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-09-14 15:46:00,809 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 30 [2018-09-14 15:46:00,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:00,810 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-09-14 15:46:00,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 15:46:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-09-14 15:46:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-14 15:46:00,813 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:00,813 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:00,813 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:00,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1865324539, now seen corresponding path program 2 times [2018-09-14 15:46:00,814 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:00,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:00,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:00,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:00,816 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:00,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:46:00,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:00,931 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 15:46:00,951 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:46:00,951 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:46:00,975 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-09-14 15:46:00,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:00,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 15:46:01,225 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-14 15:46:01,344 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 15:46:01,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [5] total 13 [2018-09-14 15:46:01,344 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:46:01,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 15:46:01,345 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 15:46:01,345 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-09-14 15:46:01,346 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2018-09-14 15:46:01,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:01,453 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-09-14 15:46:01,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:46:01,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-09-14 15:46:01,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:01,456 INFO L225 Difference]: With dead ends: 56 [2018-09-14 15:46:01,457 INFO L226 Difference]: Without dead ends: 40 [2018-09-14 15:46:01,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2018-09-14 15:46:01,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-14 15:46:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-14 15:46:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-14 15:46:01,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2018-09-14 15:46:01,464 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 36 [2018-09-14 15:46:01,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:01,464 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2018-09-14 15:46:01,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 15:46:01,465 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2018-09-14 15:46:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-14 15:46:01,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:01,466 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:01,466 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:01,467 INFO L82 PathProgramCache]: Analyzing trace with hash -705215807, now seen corresponding path program 1 times [2018-09-14 15:46:01,467 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:01,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:01,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:46:01,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:01,468 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 15:46:01,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:01,678 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:46:01,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:01,699 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:46:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:01,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 15:46:01,744 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 15:46:01,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:01,978 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:46:01,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:01,995 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:46:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:02,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 15:46:02,032 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-14 15:46:02,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:46:02,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-14 15:46:02,113 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:46:02,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:46:02,113 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:46:02,114 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-14 15:46:02,114 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 5 states. [2018-09-14 15:46:02,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:02,232 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2018-09-14 15:46:02,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:46:02,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-09-14 15:46:02,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:02,234 INFO L225 Difference]: With dead ends: 90 [2018-09-14 15:46:02,234 INFO L226 Difference]: Without dead ends: 63 [2018-09-14 15:46:02,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-14 15:46:02,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-14 15:46:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 46. [2018-09-14 15:46:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-14 15:46:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2018-09-14 15:46:02,243 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 38 [2018-09-14 15:46:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:02,243 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2018-09-14 15:46:02,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:46:02,243 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2018-09-14 15:46:02,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-14 15:46:02,245 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:46:02,245 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:46:02,245 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:46:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash -671096415, now seen corresponding path program 2 times [2018-09-14 15:46:02,246 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:46:02,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:02,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:46:02,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:46:02,247 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:46:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:46:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-09-14 15:46:02,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:46:02,360 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:46:02,374 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:46:02,375 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:46:02,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-09-14 15:46:02,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:46:02,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:46:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 15:46:02,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:46:02,550 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-09-14 15:46:02,573 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 15:46:02,573 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 11 [2018-09-14 15:46:02,573 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:46:02,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:46:02,574 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:46:02,575 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-14 15:46:02,575 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 5 states. [2018-09-14 15:46:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:46:02,635 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2018-09-14 15:46:02,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:46:02,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-09-14 15:46:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:46:02,637 INFO L225 Difference]: With dead ends: 46 [2018-09-14 15:46:02,637 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:46:02,638 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-14 15:46:02,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:46:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:46:02,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:46:02,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:46:02,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2018-09-14 15:46:02,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:46:02,640 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:46:02,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:46:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:46:02,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:46:02,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:46:02,786 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:46:02,786 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:46:02,786 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:46:02,787 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:46:02,787 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:46:02,787 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:46:02,787 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 14 58) no Hoare annotation was computed. [2018-09-14 15:46:02,787 INFO L426 ceAbstractionStarter]: For program point L23-1(lines 23 24) no Hoare annotation was computed. [2018-09-14 15:46:02,787 INFO L426 ceAbstractionStarter]: For program point L23-3(lines 23 24) no Hoare annotation was computed. [2018-09-14 15:46:02,787 INFO L422 ceAbstractionStarter]: At program point L23-4(lines 23 24) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-09-14 15:46:02,788 INFO L426 ceAbstractionStarter]: For program point L19-1(lines 19 20) no Hoare annotation was computed. [2018-09-14 15:46:02,788 INFO L426 ceAbstractionStarter]: For program point L23-5(lines 15 58) no Hoare annotation was computed. [2018-09-14 15:46:02,788 INFO L426 ceAbstractionStarter]: For program point L19-3(lines 19 20) no Hoare annotation was computed. [2018-09-14 15:46:02,788 INFO L422 ceAbstractionStarter]: At program point L19-4(lines 19 20) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-09-14 15:46:02,788 INFO L426 ceAbstractionStarter]: For program point L19-5(lines 15 58) no Hoare annotation was computed. [2018-09-14 15:46:02,788 INFO L426 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2018-09-14 15:46:02,789 INFO L422 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-09-14 15:46:02,789 INFO L426 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2018-09-14 15:46:02,789 INFO L426 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2018-09-14 15:46:02,789 INFO L422 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-09-14 15:46:02,789 INFO L426 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2018-09-14 15:46:02,789 INFO L426 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-09-14 15:46:02,789 INFO L422 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0) (and (<= 0 main_~j~0) (<= main_~nc_B~0 0))) [2018-09-14 15:46:02,790 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 14 58) no Hoare annotation was computed. [2018-09-14 15:46:02,790 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 14 58) the Hoare annotation is: true [2018-09-14 15:46:02,790 INFO L422 ceAbstractionStarter]: At program point L55(line 55) the Hoare annotation is: (or (= 0 main_~found~0) (= 1 main_~found~0)) [2018-09-14 15:46:02,790 INFO L426 ceAbstractionStarter]: For program point L55-1(line 55) no Hoare annotation was computed. [2018-09-14 15:46:02,790 INFO L426 ceAbstractionStarter]: For program point L39-1(lines 39 51) no Hoare annotation was computed. [2018-09-14 15:46:02,790 INFO L426 ceAbstractionStarter]: For program point L39-3(lines 39 51) no Hoare annotation was computed. [2018-09-14 15:46:02,790 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2018-09-14 15:46:02,791 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2018-09-14 15:46:02,791 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2018-09-14 15:46:02,791 INFO L426 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2018-09-14 15:46:02,791 INFO L426 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2018-09-14 15:46:02,791 INFO L426 ceAbstractionStarter]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2018-09-14 15:46:02,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:46:02 BoogieIcfgContainer [2018-09-14 15:46:02,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:46:02,806 INFO L168 Benchmark]: Toolchain (without parser) took 4358.27 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.2 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -513.0 MB). Peak memory consumption was 181.2 MB. Max. memory is 7.1 GB. [2018-09-14 15:46:02,811 INFO L168 Benchmark]: CDTParser took 0.22 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 15:46:02,811 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.86 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 15:46:02,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.76 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 15:46:02,813 INFO L168 Benchmark]: Boogie Preprocessor took 47.15 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 15:46:02,813 INFO L168 Benchmark]: RCFGBuilder took 617.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -743.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-14 15:46:02,814 INFO L168 Benchmark]: TraceAbstraction took 3310.97 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 220.0 MB). Peak memory consumption was 220.0 MB. Max. memory is 7.1 GB. [2018-09-14 15:46:02,819 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 348.86 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 26.76 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 47.15 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 617.52 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 694.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -743.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3310.97 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 220.0 MB). Peak memory consumption was 220.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 39]: Loop Invariant Derived loop invariant: (0 == found || 1 == found) || (0 <= j && nc_B <= 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 == found || 1 == found - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 72 SDslu, 289 SDs, 0 SdLazy, 126 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 419 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, 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, 6 MinimizatonAttempts, 36 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 17 PreInvPairs, 31 NumberOfFragments, 54 HoareAnnotationTreeSize, 17 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 407 NumberOfCodeBlocks, 375 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 605 ConstructedInterpolants, 0 QuantifiedInterpolants, 29549 SizeOfPredicates, 14 NumberOfNonLiveVariables, 404 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 171/238 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/string_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-46-02-837.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/string_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-46-02-837.csv Received shutdown request...