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-invgen/nested6_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:14:10,690 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:14:10,692 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:14:10,705 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:14:10,705 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:14:10,706 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:14:10,708 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:14:10,709 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:14:10,711 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:14:10,712 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:14:10,713 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:14:10,713 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:14:10,714 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:14:10,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:14:10,716 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:14:10,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:14:10,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:14:10,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:14:10,725 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:14:10,730 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:14:10,731 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:14:10,734 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:14:10,741 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:14:10,741 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:14:10,741 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:14:10,742 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:14:10,744 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:14:10,745 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:14:10,746 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:14:10,747 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:14:10,747 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:14:10,748 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-10 10:14:10,752 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 [2018-09-10 10:14:10,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:14:10,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:14:10,781 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:14:10,781 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:14:10,782 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:14:10,782 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:14:10,782 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:14:10,782 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:14:10,783 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:14:10,783 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:14:10,783 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:14:10,784 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:14:10,784 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:14:10,785 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:14:10,785 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:14:10,785 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:14:10,785 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:14:10,787 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:14:10,787 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:14:10,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:14:10,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:14:10,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:14:10,788 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:14:10,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:14:10,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:14:10,789 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:14:10,789 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:14:10,789 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:14:10,789 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:14:10,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:14:10,790 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:14:10,790 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:14:10,790 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:14:10,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:14:10,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:14:10,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:14:10,885 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:14:10,886 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:14:10,887 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-09-10 10:14:11,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc5e9ca1/6b70e205ed7f4cfd8e25d4a7111e81a4/FLAG5744bbe25 [2018-09-10 10:14:11,370 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:14:11,371 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-09-10 10:14:11,376 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc5e9ca1/6b70e205ed7f4cfd8e25d4a7111e81a4/FLAG5744bbe25 [2018-09-10 10:14:11,392 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc5e9ca1/6b70e205ed7f4cfd8e25d4a7111e81a4 [2018-09-10 10:14:11,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:14:11,406 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:14:11,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:14:11,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:14:11,414 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:14:11,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5eb8563f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11, skipping insertion in model container [2018-09-10 10:14:11,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,596 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:14:11,635 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:14:11,655 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:14:11,666 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:14:11,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11 WrapperNode [2018-09-10 10:14:11,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:14:11,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:14:11,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:14:11,684 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:14:11,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:14:11,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:14:11,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:14:11,710 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:14:11,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (1/1) ... [2018-09-10 10:14:11,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:14:11,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:14:11,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:14:11,744 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:14:11,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (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 [2018-09-10 10:14:11,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:14:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:14:11,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:14:11,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:14:11,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:14:11,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:14:11,822 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-10 10:14:11,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-10 10:14:12,342 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:14:12,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:14:12 BoogieIcfgContainer [2018-09-10 10:14:12,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:14:12,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:14:12,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:14:12,347 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:14:12,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:14:11" (1/3) ... [2018-09-10 10:14:12,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4b62d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:14:12, skipping insertion in model container [2018-09-10 10:14:12,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:11" (2/3) ... [2018-09-10 10:14:12,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c4b62d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:14:12, skipping insertion in model container [2018-09-10 10:14:12,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:14:12" (3/3) ... [2018-09-10 10:14:12,351 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-09-10 10:14:12,361 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:14:12,370 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:14:12,422 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:14:12,422 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:14:12,423 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:14:12,423 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:14:12,423 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:14:12,423 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:14:12,423 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:14:12,424 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:14:12,424 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:14:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-09-10 10:14:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-10 10:14:12,450 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:12,451 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:14:12,452 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:14:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash 416534784, now seen corresponding path program 1 times [2018-09-10 10:14:12,460 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:12,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:12,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:12,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:12,511 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:12,729 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:14:12,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 10:14:12,729 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:12,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:14:12,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:14:12,748 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-10 10:14:12,750 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-09-10 10:14:12,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:12,946 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2018-09-10 10:14:12,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:14:12,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-09-10 10:14:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:12,959 INFO L225 Difference]: With dead ends: 63 [2018-09-10 10:14:12,959 INFO L226 Difference]: Without dead ends: 31 [2018-09-10 10:14:12,963 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 [2018-09-10 10:14:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-10 10:14:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-10 10:14:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-10 10:14:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-09-10 10:14:13,012 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2018-09-10 10:14:13,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:13,013 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-09-10 10:14:13,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:14:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-09-10 10:14:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-10 10:14:13,014 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:13,015 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:14:13,015 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:14:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1670630326, now seen corresponding path program 1 times [2018-09-10 10:14:13,016 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:13,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,018 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:13,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:13,201 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:14:13,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-10 10:14:13,202 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:13,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:14:13,205 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:14:13,205 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:14:13,205 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2018-09-10 10:14:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:13,613 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-09-10 10:14:13,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:14:13,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-09-10 10:14:13,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:13,615 INFO L225 Difference]: With dead ends: 44 [2018-09-10 10:14:13,615 INFO L226 Difference]: Without dead ends: 42 [2018-09-10 10:14:13,616 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-10 10:14:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-10 10:14:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2018-09-10 10:14:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-10 10:14:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-09-10 10:14:13,627 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2018-09-10 10:14:13,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:13,627 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-09-10 10:14:13,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:14:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-09-10 10:14:13,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-10 10:14:13,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:13,629 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:14:13,629 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:14:13,629 INFO L82 PathProgramCache]: Analyzing trace with hash 767827044, now seen corresponding path program 1 times [2018-09-10 10:14:13,630 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:13,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:13,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,633 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:13,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:13,831 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 [2018-09-10 10:14:13,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:13,842 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:13,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:13,940 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:13,987 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:14:13,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 9 [2018-09-10 10:14:13,987 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:13,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:14:13,988 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:14:13,988 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-10 10:14:13,988 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-09-10 10:14:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:14,102 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-09-10 10:14:14,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:14:14,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-09-10 10:14:14,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:14,105 INFO L225 Difference]: With dead ends: 50 [2018-09-10 10:14:14,105 INFO L226 Difference]: Without dead ends: 48 [2018-09-10 10:14:14,106 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:14:14,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-10 10:14:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-10 10:14:14,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-10 10:14:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-10 10:14:14,118 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 22 [2018-09-10 10:14:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:14,119 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-10 10:14:14,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:14:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-10 10:14:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-10 10:14:14,120 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:14,121 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-10 10:14:14,121 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:14:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash -676333797, now seen corresponding path program 1 times [2018-09-10 10:14:14,122 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:14,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:14,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:14,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:14,123 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:14,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:14,572 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:14:14,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:14,587 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:14,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 10:14:14,774 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:14,871 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:14:14,871 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 10 [2018-09-10 10:14:14,872 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:14,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:14:14,872 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:14:14,873 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:14:14,873 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 5 states. [2018-09-10 10:14:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:15,089 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2018-09-10 10:14:15,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:14:15,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-09-10 10:14:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:15,097 INFO L225 Difference]: With dead ends: 123 [2018-09-10 10:14:15,097 INFO L226 Difference]: Without dead ends: 83 [2018-09-10 10:14:15,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:14:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-10 10:14:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 55. [2018-09-10 10:14:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-10 10:14:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2018-09-10 10:14:15,116 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 28 [2018-09-10 10:14:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:15,117 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2018-09-10 10:14:15,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:14:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2018-09-10 10:14:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-10 10:14:15,120 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:15,121 INFO L376 BasicCegarLoop]: trace histogram [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, 1] [2018-09-10 10:14:15,121 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:14:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash 542199398, now seen corresponding path program 1 times [2018-09-10 10:14:15,121 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:15,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:15,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:15,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:15,124 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-10 10:14:15,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:15,420 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 [2018-09-10 10:14:15,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:15,439 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:15,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 10:14:15,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:14:15,724 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:15,725 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 [2018-09-10 10:14:15,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:15,741 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:15,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 10:14:15,779 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:14:15,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:14:15,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 11 [2018-09-10 10:14:15,939 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:14:15,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-10 10:14:15,940 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-10 10:14:15,940 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:14:15,940 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 11 states. [2018-09-10 10:14:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:16,751 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2018-09-10 10:14:16,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-10 10:14:16,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-09-10 10:14:16,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:16,757 INFO L225 Difference]: With dead ends: 109 [2018-09-10 10:14:16,757 INFO L226 Difference]: Without dead ends: 82 [2018-09-10 10:14:16,758 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-09-10 10:14:16,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-10 10:14:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2018-09-10 10:14:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-10 10:14:16,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2018-09-10 10:14:16,774 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 36 [2018-09-10 10:14:16,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:16,775 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2018-09-10 10:14:16,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-10 10:14:16,775 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2018-09-10 10:14:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-10 10:14:16,777 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:16,777 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:14:16,777 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:14:16,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1487760091, now seen corresponding path program 1 times [2018-09-10 10:14:16,779 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:16,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:16,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:16,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:16,780 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 10:14:16,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:16,959 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:14:16,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:16,969 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:16,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-09-10 10:14:17,024 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-10 10:14:17,088 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:14:17,088 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 14 [2018-09-10 10:14:17,088 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:17,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:14:17,089 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:14:17,089 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:14:17,090 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 4 states. [2018-09-10 10:14:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:17,153 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2018-09-10 10:14:17,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 10:14:17,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-09-10 10:14:17,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:17,155 INFO L225 Difference]: With dead ends: 111 [2018-09-10 10:14:17,155 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:14:17,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:14:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:14:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:14:17,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:14:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:14:17,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-09-10 10:14:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:17,158 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:14:17,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:14:17,158 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:14:17,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:14:17,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:14:17,177 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:14:17,197 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:14:17,242 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-10 10:14:17,393 WARN L175 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 12 [2018-09-10 10:14:17,572 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-10 10:14:17,572 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:14:17,572 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:14:17,573 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-10 10:14:17,573 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-10 10:14:17,573 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-10 10:14:17,573 INFO L422 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (< main_~j~0 main_~n~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2018-09-10 10:14:17,573 INFO L422 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (< main_~j~0 main_~n~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2018-09-10 10:14:17,573 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 34) no Hoare annotation was computed. [2018-09-10 10:14:17,573 INFO L422 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (< main_~j~0 main_~n~0) (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= (+ main_~k~0 1) main_~n~0))) [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L23-1(lines 22 24) no Hoare annotation was computed. [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L19-1(lines 19 31) no Hoare annotation was computed. [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L19-3(lines 19 31) no Hoare annotation was computed. [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2018-09-10 10:14:17,574 INFO L422 ceAbstractionStarter]: At program point L19-4(lines 19 31) the Hoare annotation is: (let ((.cse0 (<= main_~k~0 main_~n~0)) (.cse1 (<= main_~n~0 main_~k~0))) (or (and .cse0 (<= main_~i~0 0) .cse1) (and .cse0 .cse1 (<= main_~n~0 main_~j~0)))) [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-09-10 10:14:17,574 INFO L429 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2018-09-10 10:14:17,574 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 30) no Hoare annotation was computed. [2018-09-10 10:14:17,575 INFO L422 ceAbstractionStarter]: At program point L20-3(lines 20 30) the Hoare annotation is: (and (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2018-09-10 10:14:17,575 INFO L426 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2018-09-10 10:14:17,575 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 34) no Hoare annotation was computed. [2018-09-10 10:14:17,575 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 34) the Hoare annotation is: true [2018-09-10 10:14:17,575 INFO L426 ceAbstractionStarter]: For program point L22-1(lines 22 24) no Hoare annotation was computed. [2018-09-10 10:14:17,575 INFO L422 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (< main_~j~0 main_~n~0) (<= .cse0 main_~j~0) (<= .cse0 main_~k~0) (<= main_~k~0 main_~n~0))) [2018-09-10 10:14:17,575 INFO L426 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-09-10 10:14:17,576 INFO L429 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-10 10:14:17,576 INFO L426 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-10 10:14:17,576 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-10 10:14:17,576 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-10 10:14:17,576 INFO L426 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-10 10:14:17,576 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-10 10:14:17,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:14:17 BoogieIcfgContainer [2018-09-10 10:14:17,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:14:17,592 INFO L168 Benchmark]: Toolchain (without parser) took 6188.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -508.5 MB). Peak memory consumption was 276.3 MB. Max. memory is 7.1 GB. [2018-09-10 10:14:17,593 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-09-10 10:14:17,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.42 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. [2018-09-10 10:14:17,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.93 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. [2018-09-10 10:14:17,595 INFO L168 Benchmark]: Boogie Preprocessor took 34.13 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. [2018-09-10 10:14:17,596 INFO L168 Benchmark]: RCFGBuilder took 599.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -835.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-10 10:14:17,597 INFO L168 Benchmark]: TraceAbstraction took 5247.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 316.6 MB). Peak memory consumption was 316.6 MB. Max. memory is 7.1 GB. [2018-09-10 10:14:17,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 275.42 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 25.93 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 34.13 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 599.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -835.6 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5247.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 316.6 MB). Peak memory consumption was 316.6 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: 20]: Loop Invariant Derived loop invariant: (2 * i <= j && k <= n) && n <= k - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((j < n && 2 * i <= j) && 2 * i <= k) && k <= n - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((k <= n && i <= 0) && n <= k) || ((k <= n && n <= k) && n <= j) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. SAFE Result, 5.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 125 SDslu, 463 SDs, 0 SdLazy, 350 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 334 SyntacticMatches, 12 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 34 PreInvPairs, 52 NumberOfFragments, 108 HoareAnnotationTreeSize, 34 FomulaSimplifications, 908 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 164 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 491 ConstructedInterpolants, 5 QuantifiedInterpolants, 33911 SizeOfPredicates, 18 NumberOfNonLiveVariables, 359 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 159/200 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/nested6_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-14-17-617.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested6_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-14-17-617.csv Received shutdown request...