java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -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-dd2f093 [2018-07-24 10:54:20,083 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 10:54:20,085 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 10:54:20,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 10:54:20,098 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 10:54:20,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 10:54:20,100 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 10:54:20,102 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 10:54:20,104 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 10:54:20,105 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 10:54:20,106 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 10:54:20,106 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 10:54:20,107 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 10:54:20,109 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 10:54:20,110 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 10:54:20,113 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 10:54:20,114 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 10:54:20,119 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 10:54:20,122 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 10:54:20,126 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 10:54:20,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 10:54:20,131 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 10:54:20,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 10:54:20,157 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 [2018-07-24 10:54:20,187 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 10:54:20,188 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 10:54:20,189 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 10:54:20,189 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 10:54:20,189 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 10:54:20,190 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 10:54:20,190 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 10:54:20,190 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 10:54:20,190 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 10:54:20,190 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 10:54:20,191 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 10:54:20,191 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 10:54:20,192 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 10:54:20,192 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 10:54:20,192 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 10:54:20,193 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 10:54:20,194 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 10:54:20,194 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 10:54:20,194 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 10:54:20,195 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 10:54:20,196 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 10:54:20,196 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 10:54:20,196 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 10:54:20,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:54:20,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 10:54:20,197 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 10:54:20,197 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 10:54:20,197 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 10:54:20,197 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 10:54:20,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 10:54:20,198 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 10:54:20,198 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 10:54:20,198 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 10:54:20,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 10:54:20,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 10:54:20,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 10:54:20,285 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 10:54:20,286 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 10:54:20,286 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-07-24 10:54:20,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293d05d02/b4ab026032c54dbab17f94a985c9cf1d/FLAG7a03e6794 [2018-07-24 10:54:20,811 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 10:54:20,812 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-07-24 10:54:20,818 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293d05d02/b4ab026032c54dbab17f94a985c9cf1d/FLAG7a03e6794 [2018-07-24 10:54:20,833 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/293d05d02/b4ab026032c54dbab17f94a985c9cf1d [2018-07-24 10:54:20,844 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 10:54:20,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 10:54:20,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 10:54:20,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 10:54:20,854 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 10:54:20,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:54:20" (1/1) ... [2018-07-24 10:54:20,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f8f258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:20, skipping insertion in model container [2018-07-24 10:54:20,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:54:20" (1/1) ... [2018-07-24 10:54:21,043 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 10:54:21,092 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:54:21,111 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 10:54:21,117 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:54:21,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21 WrapperNode [2018-07-24 10:54:21,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 10:54:21,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 10:54:21,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 10:54:21,130 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 10:54:21,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 10:54:21,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 10:54:21,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 10:54:21,150 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 10:54:21,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (1/1) ... [2018-07-24 10:54:21,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 10:54:21,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 10:54:21,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 10:54:21,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 10:54:21,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (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 [2018-07-24 10:54:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 10:54:21,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 10:54:21,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 10:54:21,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 10:54:21,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 10:54:21,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 10:54:21,227 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 [2018-07-24 10:54:21,227 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 [2018-07-24 10:54:21,705 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 10:54:21,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:54:21 BoogieIcfgContainer [2018-07-24 10:54:21,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 10:54:21,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 10:54:21,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 10:54:21,711 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 10:54:21,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 10:54:20" (1/3) ... [2018-07-24 10:54:21,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51917e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:54:21, skipping insertion in model container [2018-07-24 10:54:21,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:21" (2/3) ... [2018-07-24 10:54:21,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51917e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:54:21, skipping insertion in model container [2018-07-24 10:54:21,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:54:21" (3/3) ... [2018-07-24 10:54:21,714 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-07-24 10:54:21,728 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 10:54:21,741 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 10:54:21,793 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 10:54:21,794 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 10:54:21,794 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 10:54:21,794 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 10:54:21,794 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 10:54:21,795 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 10:54:21,795 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 10:54:21,795 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 10:54:21,795 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 10:54:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-07-24 10:54:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-07-24 10:54:21,820 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:21,821 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:21,821 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:21,826 INFO L82 PathProgramCache]: Analyzing trace with hash 416534784, now seen corresponding path program 1 times [2018-07-24 10:54:21,829 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:21,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:21,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:21,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:21,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:22,042 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:22,043 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 10:54:22,043 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:22,047 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:22,059 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:22,059 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:54:22,062 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-07-24 10:54:22,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:22,245 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2018-07-24 10:54:22,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:22,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-07-24 10:54:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:22,257 INFO L225 Difference]: With dead ends: 63 [2018-07-24 10:54:22,258 INFO L226 Difference]: Without dead ends: 31 [2018-07-24 10:54:22,263 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:22,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-07-24 10:54:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-07-24 10:54:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-07-24 10:54:22,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2018-07-24 10:54:22,310 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2018-07-24 10:54:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:22,311 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2018-07-24 10:54:22,311 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2018-07-24 10:54:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-24 10:54:22,312 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:22,313 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:22,313 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:22,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1670630326, now seen corresponding path program 1 times [2018-07-24 10:54:22,314 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:22,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:22,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:22,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:22,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:22,498 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:22,498 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 10:54:22,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:22,500 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 10:54:22,500 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 10:54:22,501 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:22,501 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2018-07-24 10:54:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:22,961 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-07-24 10:54:22,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 10:54:22,962 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-07-24 10:54:22,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:22,964 INFO L225 Difference]: With dead ends: 44 [2018-07-24 10:54:22,964 INFO L226 Difference]: Without dead ends: 42 [2018-07-24 10:54:22,965 INFO L573 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 [2018-07-24 10:54:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-07-24 10:54:22,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2018-07-24 10:54:22,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-07-24 10:54:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-07-24 10:54:22,974 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 19 [2018-07-24 10:54:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:22,975 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-07-24 10:54:22,975 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 10:54:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-07-24 10:54:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-07-24 10:54:22,976 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:22,976 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:22,976 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash 767827044, now seen corresponding path program 1 times [2018-07-24 10:54:22,977 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:22,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:22,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:22,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:22,979 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:23,179 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:23,180 INFO L191 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 [2018-07-24 10:54:23,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:23,192 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:23,297 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:23,354 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:23,354 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 9 [2018-07-24 10:54:23,354 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:23,355 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:23,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:23,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-24 10:54:23,357 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-07-24 10:54:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:23,452 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2018-07-24 10:54:23,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:23,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-07-24 10:54:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:23,457 INFO L225 Difference]: With dead ends: 50 [2018-07-24 10:54:23,457 INFO L226 Difference]: Without dead ends: 48 [2018-07-24 10:54:23,458 INFO L573 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 [2018-07-24 10:54:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-07-24 10:54:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-07-24 10:54:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-24 10:54:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-07-24 10:54:23,468 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 22 [2018-07-24 10:54:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:23,469 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-07-24 10:54:23,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-07-24 10:54:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-24 10:54:23,471 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:23,471 INFO L353 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] [2018-07-24 10:54:23,471 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:23,471 INFO L82 PathProgramCache]: Analyzing trace with hash -676333797, now seen corresponding path program 1 times [2018-07-24 10:54:23,472 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:23,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:23,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:23,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:23,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:23,943 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:23,943 INFO L191 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 [2018-07-24 10:54:23,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:23,957 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:24,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 10:54:24,122 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:24,219 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:24,219 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 10 [2018-07-24 10:54:24,219 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:24,220 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:24,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:24,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-24 10:54:24,221 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 5 states. [2018-07-24 10:54:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:24,504 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2018-07-24 10:54:24,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:24,510 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-07-24 10:54:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:24,512 INFO L225 Difference]: With dead ends: 123 [2018-07-24 10:54:24,512 INFO L226 Difference]: Without dead ends: 83 [2018-07-24 10:54:24,513 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-07-24 10:54:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-24 10:54:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 55. [2018-07-24 10:54:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-07-24 10:54:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2018-07-24 10:54:24,531 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 28 [2018-07-24 10:54:24,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:24,531 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2018-07-24 10:54:24,531 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:24,532 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2018-07-24 10:54:24,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-07-24 10:54:24,533 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:24,533 INFO L353 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] [2018-07-24 10:54:24,533 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:24,534 INFO L82 PathProgramCache]: Analyzing trace with hash 542199398, now seen corresponding path program 1 times [2018-07-24 10:54:24,534 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:24,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:24,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:24,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:24,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-24 10:54:24,649 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:24,649 INFO L191 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 [2018-07-24 10:54:24,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:24,659 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:24,680 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 10:54:24,758 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:24,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 10:54:24,935 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:24,935 INFO L191 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 [2018-07-24 10:54:24,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:24,952 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:24,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 10:54:24,995 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 10:54:25,180 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:25,180 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6, 6, 6] total 11 [2018-07-24 10:54:25,180 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:25,181 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 10:54:25,181 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 10:54:25,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:54:25,183 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand 11 states. [2018-07-24 10:54:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:25,818 INFO L93 Difference]: Finished difference Result 109 states and 130 transitions. [2018-07-24 10:54:25,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-07-24 10:54:25,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-07-24 10:54:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:25,823 INFO L225 Difference]: With dead ends: 109 [2018-07-24 10:54:25,823 INFO L226 Difference]: Without dead ends: 82 [2018-07-24 10:54:25,824 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 139 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-07-24 10:54:25,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-07-24 10:54:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2018-07-24 10:54:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-07-24 10:54:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2018-07-24 10:54:25,840 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 36 [2018-07-24 10:54:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:25,841 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2018-07-24 10:54:25,841 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 10:54:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2018-07-24 10:54:25,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-07-24 10:54:25,843 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:25,843 INFO L353 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] [2018-07-24 10:54:25,843 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:25,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1487760091, now seen corresponding path program 1 times [2018-07-24 10:54:25,844 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:25,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:25,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:25,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:25,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 10:54:26,015 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:26,015 INFO L191 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 [2018-07-24 10:54:26,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:26,026 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:26,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-07-24 10:54:26,088 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-24 10:54:26,144 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:26,145 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 14 [2018-07-24 10:54:26,145 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:26,145 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 10:54:26,145 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 10:54:26,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-07-24 10:54:26,146 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 4 states. [2018-07-24 10:54:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:26,212 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2018-07-24 10:54:26,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 10:54:26,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-07-24 10:54:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:26,214 INFO L225 Difference]: With dead ends: 111 [2018-07-24 10:54:26,214 INFO L226 Difference]: Without dead ends: 0 [2018-07-24 10:54:26,215 INFO L573 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 [2018-07-24 10:54:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-24 10:54:26,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-24 10:54:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-24 10:54:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-24 10:54:26,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-07-24 10:54:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:26,216 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-24 10:54:26,217 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 10:54:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-24 10:54:26,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-24 10:54:26,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-24 10:54:26,241 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:54:26,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:54:26,317 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-24 10:54:26,571 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-07-24 10:54:26,571 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-07-24 10:54:26,571 INFO L424 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-07-24 10:54:26,571 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-07-24 10:54:26,571 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-24 10:54:26,571 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-24 10:54:26,571 INFO L421 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2018-07-24 10:54:26,572 INFO L421 ceAbstractionStarter]: For program point L20(lines 20 30) no Hoare annotation was computed. [2018-07-24 10:54:26,572 INFO L417 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))) [2018-07-24 10:54:26,572 INFO L421 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-07-24 10:54:26,572 INFO L417 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)) [2018-07-24 10:54:26,572 INFO L421 ceAbstractionStarter]: For program point L19''(lines 19 31) no Hoare annotation was computed. [2018-07-24 10:54:26,572 INFO L421 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2018-07-24 10:54:26,573 INFO L421 ceAbstractionStarter]: For program point L15'(lines 15 18) no Hoare annotation was computed. [2018-07-24 10:54:26,573 INFO L417 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)) [2018-07-24 10:54:26,573 INFO L421 ceAbstractionStarter]: For program point L23'(lines 22 24) no Hoare annotation was computed. [2018-07-24 10:54:26,573 INFO L421 ceAbstractionStarter]: For program point mainFINAL(lines 10 34) no Hoare annotation was computed. [2018-07-24 10:54:26,573 INFO L417 ceAbstractionStarter]: At program point L22''(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))) [2018-07-24 10:54:26,573 INFO L424 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2018-07-24 10:54:26,573 INFO L417 ceAbstractionStarter]: At program point L20''(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)) [2018-07-24 10:54:26,574 INFO L417 ceAbstractionStarter]: At program point L19'''(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)))) [2018-07-24 10:54:26,574 INFO L421 ceAbstractionStarter]: For program point mainEXIT(lines 10 34) no Hoare annotation was computed. [2018-07-24 10:54:26,574 INFO L424 ceAbstractionStarter]: At program point mainENTRY(lines 10 34) the Hoare annotation is: true [2018-07-24 10:54:26,574 INFO L421 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-07-24 10:54:26,574 INFO L421 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2018-07-24 10:54:26,574 INFO L421 ceAbstractionStarter]: For program point L19(lines 19 31) no Hoare annotation was computed. [2018-07-24 10:54:26,575 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-24 10:54:26,575 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-24 10:54:26,575 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-24 10:54:26,575 INFO L421 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. [2018-07-24 10:54:26,575 INFO L424 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 [2018-07-24 10:54:26,575 INFO L421 ceAbstractionStarter]: For program point L4''(lines 3 8) no Hoare annotation was computed. [2018-07-24 10:54:26,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 10:54:26 BoogieIcfgContainer [2018-07-24 10:54:26,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 10:54:26,589 INFO L168 Benchmark]: Toolchain (without parser) took 5744.41 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -441.9 MB). Peak memory consumption was 277.4 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:26,591 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:54:26,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.17 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:26,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.00 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. [2018-07-24 10:54:26,593 INFO L168 Benchmark]: Boogie Preprocessor took 21.66 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. [2018-07-24 10:54:26,593 INFO L168 Benchmark]: RCFGBuilder took 535.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:26,595 INFO L168 Benchmark]: TraceAbstraction took 4881.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 312.7 MB). Peak memory consumption was 312.7 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:26,599 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.17 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: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 19.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.66 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 535.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -767.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4881.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 312.7 MB). Peak memory consumption was 312.7 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: 19]: Loop Invariant Derived loop invariant: ((k <= n && i <= 0) && n <= k) || ((k <= n && n <= k) && n <= j) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((j < n && 2 * i <= j) && 2 * i <= k) && k <= n - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (2 * i <= j && k <= n) && n <= k - 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, 4.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 125 SDslu, 463 SDs, 0 SdLazy, 350 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 334 SyntacticMatches, 12 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s 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, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 164 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s 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-0-2018-07-24_10-54-26-614.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-0-2018-07-24_10-54-26-614.csv Received shutdown request...