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/nested9_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:14:11,657 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:14:11,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:14:11,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:14:11,671 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:14:11,672 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:14:11,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:14:11,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:14:11,677 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:14:11,678 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:14:11,679 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:14:11,679 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:14:11,680 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:14:11,681 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:14:11,682 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:14:11,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:14:11,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:14:11,686 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:14:11,691 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:14:11,693 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:14:11,700 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:14:11,701 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:14:11,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:14:11,708 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:14:11,708 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:14:11,711 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:14:11,712 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:14:11,713 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:14:11,714 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:14:11,716 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:14:11,716 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:14:11,717 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:14:11,718 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:14:11,718 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:14:11,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:14:11,721 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:14:11,721 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 10:14:11,754 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:14:11,755 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:14:11,756 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:14:11,756 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:14:11,757 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:14:11,757 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:14:11,757 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:14:11,757 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:14:11,757 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:14:11,758 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:14:11,758 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:14:11,762 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:14:11,762 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:14:11,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:14:11,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:14:11,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:14:11,763 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:14:11,763 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:14:11,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:14:11,763 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:14:11,763 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:14:11,764 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:14:11,764 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:14:11,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:14:11,764 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:14:11,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:14:11,766 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:14:11,766 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:14:11,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:14:11,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:14:11,766 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:14:11,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:14:11,767 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:14:11,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:14:11,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:14:11,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:14:11,848 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:14:11,849 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:14:11,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9_true-unreach-call_true-termination.i [2018-09-10 10:14:12,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/089015633/dfa286bceed84819a0ac0c2f6d90bb27/FLAG977e79f55 [2018-09-10 10:14:12,355 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:14:12,356 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested9_true-unreach-call_true-termination.i [2018-09-10 10:14:12,365 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/089015633/dfa286bceed84819a0ac0c2f6d90bb27/FLAG977e79f55 [2018-09-10 10:14:12,386 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/089015633/dfa286bceed84819a0ac0c2f6d90bb27 [2018-09-10 10:14:12,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:14:12,401 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:14:12,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:14:12,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:14:12,409 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:14:12,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fcc92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12, skipping insertion in model container [2018-09-10 10:14:12,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,615 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:14:12,662 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:14:12,684 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:14:12,697 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:14:12,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12 WrapperNode [2018-09-10 10:14:12,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:14:12,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:14:12,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:14:12,715 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:14:12,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:14:12,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:14:12,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:14:12,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:14:12,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (1/1) ... [2018-09-10 10:14:12,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:14:12,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:14:12,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:14:12,784 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:14:12,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (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 10:14:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:14:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:14:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:14:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:14:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:14:12,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:14:12,851 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 10:14:12,851 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 10:14:13,319 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:14:13,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:14:13 BoogieIcfgContainer [2018-09-10 10:14:13,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:14:13,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:14:13,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:14:13,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:14:13,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:14:12" (1/3) ... [2018-09-10 10:14:13,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce54c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:14:13, skipping insertion in model container [2018-09-10 10:14:13,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:14:12" (2/3) ... [2018-09-10 10:14:13,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce54c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:14:13, skipping insertion in model container [2018-09-10 10:14:13,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:14:13" (3/3) ... [2018-09-10 10:14:13,328 INFO L112 eAbstractionObserver]: Analyzing ICFG nested9_true-unreach-call_true-termination.i [2018-09-10 10:14:13,338 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:14:13,347 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:14:13,394 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:14:13,395 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:14:13,395 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:14:13,395 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:14:13,395 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:14:13,395 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:14:13,396 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:14:13,396 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:14:13,396 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:14:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-09-10 10:14:13,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-10 10:14:13,422 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:13,423 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] [2018-09-10 10:14:13,424 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 10:14:13,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1899131806, now seen corresponding path program 1 times [2018-09-10 10:14:13,433 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:13,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:13,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,485 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:13,647 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 10:14:13,649 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:14:13,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-10 10:14:13,650 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:13,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:14:13,667 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:14:13,668 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-10 10:14:13,670 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2018-09-10 10:14:13,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:13,875 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2018-09-10 10:14:13,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:14:13,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-09-10 10:14:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:13,885 INFO L225 Difference]: With dead ends: 61 [2018-09-10 10:14:13,885 INFO L226 Difference]: Without dead ends: 32 [2018-09-10 10:14:13,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-10 10:14:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-10 10:14:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-09-10 10:14:13,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-10 10:14:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-09-10 10:14:13,926 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 21 [2018-09-10 10:14:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:13,927 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-09-10 10:14:13,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:14:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-09-10 10:14:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-10 10:14:13,928 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:13,928 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] [2018-09-10 10:14:13,929 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 10:14:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1651874812, now seen corresponding path program 1 times [2018-09-10 10:14:13,930 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:13,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:13,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:13,931 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:14,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:14,182 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 10:14:14,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:14,195 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:14,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:14,499 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:15,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:14:15,177 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2018-09-10 10:14:15,177 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:15,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:14:15,178 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:14:15,179 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:14:15,179 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 8 states. [2018-09-10 10:14:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:15,406 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-09-10 10:14:15,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-10 10:14:15,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-10 10:14:15,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:15,408 INFO L225 Difference]: With dead ends: 46 [2018-09-10 10:14:15,408 INFO L226 Difference]: Without dead ends: 44 [2018-09-10 10:14:15,410 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:14:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-10 10:14:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-09-10 10:14:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-10 10:14:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-09-10 10:14:15,419 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 26 [2018-09-10 10:14:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:15,419 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-09-10 10:14:15,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 10:14:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-09-10 10:14:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-10 10:14:15,421 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:15,421 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:14:15,422 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 10:14:15,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1162553418, now seen corresponding path program 1 times [2018-09-10 10:14:15,422 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:15,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:15,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:15,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:15,424 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:15,632 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:15,632 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 10:14:15,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:15,648 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:15,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:16,058 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:16,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:16,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:16,133 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:14:16,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:16,154 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:16,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:16,216 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:14:16,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:14:16,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 10 [2018-09-10 10:14:16,290 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:14:16,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-10 10:14:16,291 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-10 10:14:16,291 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-09-10 10:14:16,292 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2018-09-10 10:14:16,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:16,677 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2018-09-10 10:14:16,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-10 10:14:16,678 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-10 10:14:16,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:16,682 INFO L225 Difference]: With dead ends: 82 [2018-09-10 10:14:16,682 INFO L226 Difference]: Without dead ends: 59 [2018-09-10 10:14:16,683 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 125 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-09-10 10:14:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-10 10:14:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2018-09-10 10:14:16,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-10 10:14:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2018-09-10 10:14:16,698 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 34 [2018-09-10 10:14:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:16,699 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2018-09-10 10:14:16,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-10 10:14:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2018-09-10 10:14:16,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-10 10:14:16,701 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:16,702 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:14:16,702 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 10:14:16,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1325122332, now seen corresponding path program 1 times [2018-09-10 10:14:16,703 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:16,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:16,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:16,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:16,704 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-10 10:14:16,839 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:16,839 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 [2018-09-10 10:14:16,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:16,848 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:14:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:16,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-10 10:14:16,923 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:14:17,043 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-10 10:14:17,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-10 10:14:17,043 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:14:17,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:14:17,044 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:14:17,044 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:14:17,045 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 6 states. [2018-09-10 10:14:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:17,299 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2018-09-10 10:14:17,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:14:17,301 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2018-09-10 10:14:17,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:17,302 INFO L225 Difference]: With dead ends: 86 [2018-09-10 10:14:17,302 INFO L226 Difference]: Without dead ends: 54 [2018-09-10 10:14:17,303 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-10 10:14:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-10 10:14:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2018-09-10 10:14:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-10 10:14:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-09-10 10:14:17,315 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 44 [2018-09-10 10:14:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:17,315 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-09-10 10:14:17,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:14:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-09-10 10:14:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-10 10:14:17,317 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:14:17,317 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2018-09-10 10:14:17,317 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 10:14:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash -908739042, now seen corresponding path program 2 times [2018-09-10 10:14:17,318 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:14:17,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:17,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:14:17,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:14:17,319 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:14:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:14:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-10 10:14:17,493 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:17,494 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 10:14:17,503 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-10 10:14:17,504 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:14:17,532 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-09-10 10:14:17,532 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:14:17,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-10 10:14:17,702 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-10 10:14:17,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:14:17,792 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:14:17,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-10 10:14:17,807 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:14:17,827 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-09-10 10:14:17,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:14:17,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:14:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-10 10:14:17,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:14:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-09-10 10:14:17,892 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:14:17,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7, 7, 7] total 19 [2018-09-10 10:14:17,892 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:14:17,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-10 10:14:17,893 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-10 10:14:17,894 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-09-10 10:14:17,894 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 16 states. [2018-09-10 10:14:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:14:18,860 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2018-09-10 10:14:18,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-10 10:14:18,860 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2018-09-10 10:14:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:14:18,862 INFO L225 Difference]: With dead ends: 105 [2018-09-10 10:14:18,862 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:14:18,864 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=864, Unknown=0, NotChecked=0, Total=1122 [2018-09-10 10:14:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:14:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:14:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:14:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:14:18,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-09-10 10:14:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:14:18,866 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:14:18,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-10 10:14:18,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:14:18,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:14:18,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:14:19,070 WARN L175 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2018-09-10 10:14:19,223 WARN L175 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2018-09-10 10:14:19,587 WARN L175 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2018-09-10 10:14:19,619 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-09-10 10:14:19,619 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-09-10 10:14:19,619 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:14:19,619 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:14:19,620 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-10 10:14:19,620 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-10 10:14:19,620 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-10 10:14:19,620 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 11 26) no Hoare annotation was computed. [2018-09-10 10:14:19,621 INFO L422 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse2 (* 3 main_~i~0))) (let ((.cse0 (< main_~i~0 main_~n~0)) (.cse1 (<= (+ main_~k~0 2) .cse2))) (or (and (exists ((main_~i~0 Int)) (and (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1) (<= main_~i~0 main_~k~0))) .cse0 (exists ((main_~i~0 Int)) (and (<= 1 main_~i~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~i~0))) (<= main_~i~0 1) .cse1) (and (<= 2 main_~i~0) (< main_~j~0 .cse2) .cse0 (<= (* 2 main_~i~0) main_~j~0) .cse1)))) [2018-09-10 10:14:19,621 INFO L426 ceAbstractionStarter]: For program point L23-1(lines 22 23) no Hoare annotation was computed. [2018-09-10 10:14:19,621 INFO L426 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-09-10 10:14:19,621 INFO L426 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-09-10 10:14:19,621 INFO L429 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2018-09-10 10:14:19,621 INFO L426 ceAbstractionStarter]: For program point L20-1(lines 20 23) no Hoare annotation was computed. [2018-09-10 10:14:19,621 INFO L426 ceAbstractionStarter]: For program point L20-3(lines 20 23) no Hoare annotation was computed. [2018-09-10 10:14:19,622 INFO L426 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-09-10 10:14:19,622 INFO L422 ceAbstractionStarter]: At program point L20-4(lines 20 23) the Hoare annotation is: (or (and (<= 1 main_~i~0) (<= main_~j~0 (* 2 main_~i~0))) (<= 2 main_~i~0) (and (<= 0 main_~i~0) (<= main_~i~0 0))) [2018-09-10 10:14:19,622 INFO L426 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-09-10 10:14:19,622 INFO L426 ceAbstractionStarter]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2018-09-10 10:14:19,622 INFO L426 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-09-10 10:14:19,622 INFO L422 ceAbstractionStarter]: At program point L21-4(lines 21 23) the Hoare annotation is: (let ((.cse4 (* 2 main_~i~0))) (let ((.cse0 (<= 1 main_~i~0)) (.cse3 (<= main_~j~0 .cse4)) (.cse1 (< main_~i~0 main_~n~0)) (.cse2 (<= .cse4 main_~j~0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 (<= main_~j~0 (+ main_~k~0 1)) .cse2) (and (<= (* 3 main_~i~0) main_~j~0) (<= 0 main_~i~0) .cse1 .cse3) (and (<= 2 main_~i~0) .cse1 .cse2)))) [2018-09-10 10:14:19,622 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 11 26) no Hoare annotation was computed. [2018-09-10 10:14:19,623 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 11 26) the Hoare annotation is: true [2018-09-10 10:14:19,623 INFO L426 ceAbstractionStarter]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2018-09-10 10:14:19,623 INFO L422 ceAbstractionStarter]: At program point L22-3(lines 22 23) the Hoare annotation is: (let ((.cse1 (* 3 main_~i~0)) (.cse0 (< main_~i~0 main_~n~0)) (.cse2 (<= (* 2 main_~i~0) main_~j~0))) (or (and (exists ((main_~i~0 Int)) (and (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1) (<= main_~i~0 main_~k~0))) .cse0 (exists ((main_~i~0 Int)) (and (<= 1 main_~i~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~i~0))) (<= main_~i~0 1) (<= (+ main_~k~0 2) .cse1)) (and (<= 2 main_~i~0) (< main_~j~0 .cse1) .cse0 .cse2) (and (<= 1 main_~i~0) (exists ((main_~i~0 Int)) (and (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1) (<= (+ main_~i~0 1) main_~k~0))) .cse0 .cse2))) [2018-09-10 10:14:19,623 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-10 10:14:19,623 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 10:14:19,623 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 10:14:19,623 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-10 10:14:19,624 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-10 10:14:19,624 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 10:14:19,624 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-10 10:14:19,640 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,641 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,641 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,641 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,642 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,642 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,642 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,642 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,643 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,645 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,645 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,645 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,646 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,646 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,646 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,647 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,647 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,647 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:14:19 BoogieIcfgContainer [2018-09-10 10:14:19,650 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:14:19,651 INFO L168 Benchmark]: Toolchain (without parser) took 7252.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -373.8 MB). Peak memory consumption was 373.3 MB. Max. memory is 7.1 GB. [2018-09-10 10:14:19,653 INFO L168 Benchmark]: CDTParser took 0.21 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 10:14:19,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.23 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 10:14:19,654 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.85 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 10:14:19,655 INFO L168 Benchmark]: Boogie Preprocessor took 42.88 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 10:14:19,655 INFO L168 Benchmark]: RCFGBuilder took 536.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-10 10:14:19,656 INFO L168 Benchmark]: TraceAbstraction took 6329.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 409.1 MB). Peak memory consumption was 409.1 MB. Max. memory is 7.1 GB. [2018-09-10 10:14:19,661 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 312.23 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 24.85 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 42.88 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 536.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -793.5 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6329.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 409.1 MB). Peak memory consumption was 409.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] * 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: 21]: Loop Invariant Derived loop invariant: (((((1 <= i && i < n) && 2 * i <= j) && j <= 2 * i) || (((1 <= i && i < n) && j <= k + 1) && 2 * i <= j)) || (((3 * i <= j && 0 <= i) && i < n) && j <= 2 * i)) || ((2 <= i && i < n) && 2 * i <= j) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2018-09-10 10:14:19,673 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,673 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,674 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,674 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,674 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,674 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,675 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,675 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,675 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,677 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,677 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,678 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,678 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,678 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,678 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,678 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,679 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-09-10 10:14:19,679 WARN L343 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] Derived loop invariant: ((((((\exists main_~i~0 : int :: (j <= 2 * main_~i~0 && main_~i~0 <= 1) && main_~i~0 <= k) && i < n) && (\exists main_~i~0 : int :: (1 <= main_~i~0 && 2 * main_~i~0 <= j) && k <= main_~i~0)) && i <= 1) && k + 2 <= 3 * i) || (((2 <= i && j < 3 * i) && i < n) && 2 * i <= j)) || (((1 <= i && (\exists main_~i~0 : int :: (j <= 2 * main_~i~0 && main_~i~0 <= 1) && main_~i~0 + 1 <= k)) && i < n) && 2 * i <= j) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((1 <= i && j <= 2 * i) || 2 <= i) || (0 <= i && i <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. SAFE Result, 6.2s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 143 SDslu, 518 SDs, 0 SdLazy, 478 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 540 GetRequests, 454 SyntacticMatches, 13 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 22 PreInvPairs, 45 NumberOfFragments, 240 HoareAnnotationTreeSize, 22 FomulaSimplifications, 503 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 85 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 419 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 644 ConstructedInterpolants, 21 QuantifiedInterpolants, 68436 SizeOfPredicates, 26 NumberOfNonLiveVariables, 411 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 298/356 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/nested9_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-14-19-685.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested9_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-14-19-685.csv Received shutdown request...