java -Xss4m -Xmx6000000000 -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 ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-21 22:38:03,195 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-21 22:38:03,198 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-21 22:38:03,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-21 22:38:03,216 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-21 22:38:03,217 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-21 22:38:03,218 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-21 22:38:03,224 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-21 22:38:03,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-21 22:38:03,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-21 22:38:03,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-21 22:38:03,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-21 22:38:03,230 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-21 22:38:03,231 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-21 22:38:03,232 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-21 22:38:03,232 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-21 22:38:03,235 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-21 22:38:03,237 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-21 22:38:03,247 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-21 22:38:03,249 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-21 22:38:03,250 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-21 22:38:03,251 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-21 22:38:03,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-21 22:38:03,269 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-21 22:38:03,295 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-21 22:38:03,295 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-21 22:38:03,296 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-21 22:38:03,296 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-21 22:38:03,297 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-21 22:38:03,297 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-21 22:38:03,297 INFO L133 SettingsManager]: * Use SBE=true [2018-07-21 22:38:03,297 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-21 22:38:03,298 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-21 22:38:03,300 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-21 22:38:03,300 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-21 22:38:03,301 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-21 22:38:03,301 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-21 22:38:03,301 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-21 22:38:03,301 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-21 22:38:03,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-21 22:38:03,302 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-21 22:38:03,302 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-21 22:38:03,302 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-21 22:38:03,302 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-21 22:38:03,302 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-21 22:38:03,302 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-21 22:38:03,303 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-21 22:38:03,303 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-21 22:38:03,303 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-21 22:38:03,303 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-21 22:38:03,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-21 22:38:03,303 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-21 22:38:03,304 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-21 22:38:03,349 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-21 22:38:03,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-21 22:38:03,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-21 22:38:03,375 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-21 22:38:03,375 INFO L276 PluginConnector]: CDTParser initialized [2018-07-21 22:38:03,376 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-07-21 22:38:03,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1f504a84b/94a4e709179e4d7aae4d7469a3dd630b/FLAG01064eaba [2018-07-21 22:38:03,911 INFO L276 CDTParser]: Found 1 translation units. [2018-07-21 22:38:03,911 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-07-21 22:38:03,919 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1f504a84b/94a4e709179e4d7aae4d7469a3dd630b/FLAG01064eaba [2018-07-21 22:38:03,934 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/1f504a84b/94a4e709179e4d7aae4d7469a3dd630b [2018-07-21 22:38:03,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-21 22:38:03,950 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-21 22:38:03,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-21 22:38:03,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-21 22:38:03,958 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-21 22:38:03,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:38:03" (1/1) ... [2018-07-21 22:38:03,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b93645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:03, skipping insertion in model container [2018-07-21 22:38:03,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:38:03" (1/1) ... [2018-07-21 22:38:04,169 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-21 22:38:04,208 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 22:38:04,229 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-21 22:38:04,239 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-21 22:38:04,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04 WrapperNode [2018-07-21 22:38:04,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-21 22:38:04,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-21 22:38:04,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-21 22:38:04,254 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-21 22:38:04,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-21 22:38:04,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-21 22:38:04,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-21 22:38:04,295 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-21 22:38:04,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... [2018-07-21 22:38:04,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-21 22:38:04,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-21 22:38:04,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-21 22:38:04,321 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-21 22:38:04,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (1/1) ... No working directory specified, using /storage/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 [2018-07-21 22:38:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-21 22:38:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-21 22:38:04,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-21 22:38:04,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-21 22:38:04,845 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-21 22:38:04,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:38:04 BoogieIcfgContainer [2018-07-21 22:38:04,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-21 22:38:04,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-21 22:38:04,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-21 22:38:04,852 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-21 22:38:04,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:38:03" (1/3) ... [2018-07-21 22:38:04,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5e7bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:38:04, skipping insertion in model container [2018-07-21 22:38:04,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:38:04" (2/3) ... [2018-07-21 22:38:04,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5e7bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:38:04, skipping insertion in model container [2018-07-21 22:38:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:38:04" (3/3) ... [2018-07-21 22:38:04,856 INFO L112 eAbstractionObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-07-21 22:38:04,876 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-21 22:38:04,888 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-21 22:38:04,933 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-21 22:38:04,934 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-21 22:38:04,934 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-21 22:38:04,934 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-21 22:38:04,934 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-21 22:38:04,934 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-21 22:38:04,934 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-21 22:38:04,935 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-21 22:38:04,936 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-21 22:38:04,954 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-07-21 22:38:04,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-21 22:38:04,960 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:38:04,961 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:38:04,961 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:38:04,967 INFO L82 PathProgramCache]: Analyzing trace with hash -2042031757, now seen corresponding path program 1 times [2018-07-21 22:38:04,969 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:38:04,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:38:05,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:05,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:05,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:38:05,171 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 22:38:05,171 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-21 22:38:05,173 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-21 22:38:05,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-21 22:38:05,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-21 22:38:05,186 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-07-21 22:38:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:38:05,377 INFO L93 Difference]: Finished difference Result 59 states and 81 transitions. [2018-07-21 22:38:05,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-21 22:38:05,379 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-07-21 22:38:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:38:05,393 INFO L225 Difference]: With dead ends: 59 [2018-07-21 22:38:05,393 INFO L226 Difference]: Without dead ends: 28 [2018-07-21 22:38:05,397 INFO L578 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 [2018-07-21 22:38:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-07-21 22:38:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-07-21 22:38:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-07-21 22:38:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-07-21 22:38:05,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 14 [2018-07-21 22:38:05,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:38:05,438 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-07-21 22:38:05,438 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-21 22:38:05,438 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-07-21 22:38:05,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-21 22:38:05,439 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:38:05,439 INFO L358 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:38:05,440 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:38:05,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1665391785, now seen corresponding path program 1 times [2018-07-21 22:38:05,440 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:38:05,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:38:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:05,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:05,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:38:05,615 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-21 22:38:05,615 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-21 22:38:05,616 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-21 22:38:05,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-21 22:38:05,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-21 22:38:05,618 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2018-07-21 22:38:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:38:05,976 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2018-07-21 22:38:05,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-21 22:38:05,976 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-07-21 22:38:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:38:05,977 INFO L225 Difference]: With dead ends: 41 [2018-07-21 22:38:05,977 INFO L226 Difference]: Without dead ends: 39 [2018-07-21 22:38:05,978 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-21 22:38:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-07-21 22:38:05,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2018-07-21 22:38:05,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-07-21 22:38:05,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2018-07-21 22:38:05,988 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 16 [2018-07-21 22:38:05,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:38:05,988 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2018-07-21 22:38:05,989 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-21 22:38:05,989 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2018-07-21 22:38:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-07-21 22:38:05,990 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:38:05,990 INFO L358 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-21 22:38:05,990 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:38:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash -609778610, now seen corresponding path program 1 times [2018-07-21 22:38:05,990 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:38:05,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:38:05,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:05,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:05,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:38:06,205 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:38:06,205 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:38:06,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:06,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:38:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:38:06,604 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 22:38:06,605 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2018-07-21 22:38:06,605 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-21 22:38:06,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-21 22:38:06,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-07-21 22:38:06,606 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 9 states. [2018-07-21 22:38:07,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:38:07,196 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-07-21 22:38:07,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-21 22:38:07,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-07-21 22:38:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:38:07,201 INFO L225 Difference]: With dead ends: 59 [2018-07-21 22:38:07,201 INFO L226 Difference]: Without dead ends: 57 [2018-07-21 22:38:07,202 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-07-21 22:38:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-07-21 22:38:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-07-21 22:38:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-07-21 22:38:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2018-07-21 22:38:07,216 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 19 [2018-07-21 22:38:07,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:38:07,216 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2018-07-21 22:38:07,216 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-21 22:38:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2018-07-21 22:38:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-07-21 22:38:07,218 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:38:07,218 INFO L358 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] [2018-07-21 22:38:07,218 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:38:07,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1866481029, now seen corresponding path program 1 times [2018-07-21 22:38:07,219 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:38:07,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:38:07,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:07,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:07,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-21 22:38:07,359 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:38:07,359 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:38:07,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:07,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:38:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:38:07,489 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-21 22:38:07,489 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2018-07-21 22:38:07,489 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-21 22:38:07,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-21 22:38:07,490 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-07-21 22:38:07,490 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand 10 states. [2018-07-21 22:38:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:38:08,068 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2018-07-21 22:38:08,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-21 22:38:08,069 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2018-07-21 22:38:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:38:08,070 INFO L225 Difference]: With dead ends: 154 [2018-07-21 22:38:08,071 INFO L226 Difference]: Without dead ends: 102 [2018-07-21 22:38:08,072 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-07-21 22:38:08,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-07-21 22:38:08,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 63. [2018-07-21 22:38:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-07-21 22:38:08,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-07-21 22:38:08,090 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 25 [2018-07-21 22:38:08,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:38:08,090 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-07-21 22:38:08,090 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-21 22:38:08,091 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-07-21 22:38:08,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-21 22:38:08,092 INFO L350 BasicCegarLoop]: Found error trace [2018-07-21 22:38:08,092 INFO L358 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] [2018-07-21 22:38:08,092 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-21 22:38:08,092 INFO L82 PathProgramCache]: Analyzing trace with hash 545992771, now seen corresponding path program 1 times [2018-07-21 22:38:08,092 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-21 22:38:08,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-21 22:38:08,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:08,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:08,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-21 22:38:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-21 22:38:08,189 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-21 22:38:08,189 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/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 [2018-07-21 22:38:08,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-21 22:38:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-21 22:38:08,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-21 22:38:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-21 22:38:08,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-21 22:38:08,352 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2018-07-21 22:38:08,352 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-21 22:38:08,352 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-21 22:38:08,352 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-07-21 22:38:08,353 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 11 states. [2018-07-21 22:38:08,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-21 22:38:08,726 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2018-07-21 22:38:08,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-21 22:38:08,728 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2018-07-21 22:38:08,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-21 22:38:08,728 INFO L225 Difference]: With dead ends: 124 [2018-07-21 22:38:08,728 INFO L226 Difference]: Without dead ends: 0 [2018-07-21 22:38:08,729 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-07-21 22:38:08,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-21 22:38:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-21 22:38:08,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-21 22:38:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-21 22:38:08,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-07-21 22:38:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-21 22:38:08,731 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-21 22:38:08,731 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-21 22:38:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-21 22:38:08,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-21 22:38:08,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-21 22:38:08,826 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-07-21 22:38:09,003 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 15 [2018-07-21 22:38:09,212 WARN L169 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-07-21 22:38:09,263 INFO L424 ceAbstractionStarter]: At program point __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-07-21 22:38:09,263 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-07-21 22:38:09,263 INFO L421 ceAbstractionStarter]: For program point __U_MULTI_f_storage_ultimate_trunk_examples_svcomp_loop_invgen_nested__true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L4''(lines 3 8) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L20(lines 20 30) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L417 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= (+ ULTIMATE.start_main_~k~0 1) ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~j~0))) [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L417 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L19''(lines 19 31) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L28(lines 20 30) no Hoare annotation was computed. [2018-07-21 22:38:09,264 INFO L421 ceAbstractionStarter]: For program point L15'(lines 15 18) no Hoare annotation was computed. [2018-07-21 22:38:09,265 INFO L417 ceAbstractionStarter]: At program point L27'(line 27) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2018-07-21 22:38:09,265 INFO L421 ceAbstractionStarter]: For program point L23'(lines 22 24) no Hoare annotation was computed. [2018-07-21 22:38:09,265 INFO L417 ceAbstractionStarter]: At program point L22''(lines 22 24) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~j~0))) [2018-07-21 22:38:09,265 INFO L424 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2018-07-21 22:38:09,265 INFO L417 ceAbstractionStarter]: At program point L20''(lines 20 30) the Hoare annotation is: (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2018-07-21 22:38:09,265 INFO L424 ceAbstractionStarter]: At program point L33(lines 10 34) the Hoare annotation is: true [2018-07-21 22:38:09,265 INFO L417 ceAbstractionStarter]: At program point L19'''(lines 19 31) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0) .cse1) (and (<= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2018-07-21 22:38:09,265 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-07-21 22:38:09,266 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-07-21 22:38:09,266 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-07-21 22:38:09,266 INFO L421 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-07-21 22:38:09,266 INFO L421 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-07-21 22:38:09,266 INFO L421 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2018-07-21 22:38:09,266 INFO L421 ceAbstractionStarter]: For program point L19(lines 19 31) no Hoare annotation was computed. [2018-07-21 22:38:09,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:38:09 BoogieIcfgContainer [2018-07-21 22:38:09,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-21 22:38:09,279 INFO L168 Benchmark]: Toolchain (without parser) took 5333.37 ms. Allocated memory was 309.9 MB in the beginning and 488.6 MB in the end (delta: 178.8 MB). Free memory was 256.8 MB in the beginning and 345.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 90.2 MB. Max. memory is 5.3 GB. [2018-07-21 22:38:09,280 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-21 22:38:09,280 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.34 ms. Allocated memory is still 309.9 MB. Free memory was 255.8 MB in the beginning and 246.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-07-21 22:38:09,281 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 309.9 MB. Free memory was 246.6 MB in the beginning and 245.6 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-07-21 22:38:09,281 INFO L168 Benchmark]: Boogie Preprocessor took 25.61 ms. Allocated memory is still 309.9 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-07-21 22:38:09,282 INFO L168 Benchmark]: RCFGBuilder took 527.55 ms. Allocated memory was 309.9 MB in the beginning and 476.6 MB in the end (delta: 166.7 MB). Free memory was 243.6 MB in the beginning and 445.8 MB in the end (delta: -202.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 5.3 GB. [2018-07-21 22:38:09,283 INFO L168 Benchmark]: TraceAbstraction took 4428.99 ms. Allocated memory was 476.6 MB in the beginning and 488.6 MB in the end (delta: 12.1 MB). Free memory was 444.5 MB in the beginning and 345.3 MB in the end (delta: 99.2 MB). Peak memory consumption was 111.3 MB. Max. memory is 5.3 GB. [2018-07-21 22:38:09,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 302.34 ms. Allocated memory is still 309.9 MB. Free memory was 255.8 MB in the beginning and 246.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 309.9 MB. Free memory was 246.6 MB in the beginning and 245.6 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * Boogie Preprocessor took 25.61 ms. Allocated memory is still 309.9 MB. Free memory was 245.6 MB in the beginning and 243.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 527.55 ms. Allocated memory was 309.9 MB in the beginning and 476.6 MB in the end (delta: 166.7 MB). Free memory was 243.6 MB in the beginning and 445.8 MB in the end (delta: -202.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4428.99 ms. Allocated memory was 476.6 MB in the beginning and 488.6 MB in the end (delta: 12.1 MB). Free memory was 444.5 MB in the beginning and 345.3 MB in the end (delta: 99.2 MB). Peak memory consumption was 111.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (k <= n && 2 * i <= j) && n <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((k <= n && n <= j) && n <= k) || ((i <= 0 && k <= n) && n <= k) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((2 * i <= k && j + 1 <= n) && k <= n) && 2 * i <= j - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. SAFE Result, 4.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 113 SDtfs, 133 SDslu, 393 SDs, 0 SdLazy, 457 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=4, 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, 46 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 31 PreInvPairs, 53 NumberOfFragments, 114 HoareAnnotationTreeSize, 31 FomulaSimplifications, 741 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 571 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 5 QuantifiedInterpolants, 10828 SizeOfPredicates, 9 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 32/40 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/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested6_true-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-21_22-38-09-303.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested6_true-unreach-call_true-termination.i_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-21_22-38-09-303.csv Received shutdown request...