java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005_variant.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:42:26,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:42:26,335 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:42:26,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:42:26,348 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:42:26,349 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:42:26,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:42:26,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:42:26,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:42:26,355 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:42:26,356 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:42:26,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:42:26,358 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:42:26,359 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:42:26,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:42:26,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:42:26,361 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:42:26,363 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:42:26,365 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:42:26,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:42:26,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:42:26,369 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:42:26,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:42:26,372 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:42:26,372 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:42:26,373 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:42:26,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:42:26,374 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:42:26,375 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:42:26,376 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:42:26,376 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:42:26,377 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 13:42:26,377 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 13:42:26,377 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 13:42:26,378 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 13:42:26,379 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 13:42:26,379 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:42:26,393 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:42:26,393 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:42:26,394 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:42:26,395 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:42:26,395 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:42:26,395 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:42:26,395 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:42:26,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:42:26,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:42:26,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:42:26,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:42:26,474 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:42:26,474 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:42:26,475 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005_variant.c.i_3.bpl [2018-07-23 13:42:26,475 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/cggmp2005_variant.c.i_3.bpl' [2018-07-23 13:42:26,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:42:26,538 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:42:26,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:42:26,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:42:26,539 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:42:26,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:42:26,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:42:26,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:42:26,590 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:42:26,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/1) ... [2018-07-23 13:42:26,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:42:26,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:42:26,812 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:42:26,813 INFO L202 PluginConnector]: Adding new model cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:42:26 BoogieIcfgContainer [2018-07-23 13:42:26,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:42:26,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:42:26,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:42:26,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:42:26,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:42:26" (1/2) ... [2018-07-23 13:42:26,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c897104 and model type cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:42:26, skipping insertion in model container [2018-07-23 13:42:26,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:42:26" (2/2) ... [2018-07-23 13:42:26,824 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.c.i_3.bpl [2018-07-23 13:42:26,833 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:42:26,841 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:42:26,887 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:42:26,888 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:42:26,888 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:42:26,888 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:42:26,888 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:42:26,889 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:42:26,889 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:42:26,889 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:42:26,889 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:42:26,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 13:42:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:42:26,912 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:26,913 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:42:26,913 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:26,919 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-23 13:42:26,925 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:26,994 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:42:26,995 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-23 13:42:26,997 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:26,998 INFO L185 omatonBuilderFactory]: Interpolants [9#true, 10#false, 11#(< 0 ULTIMATE.start_main_~mid~5)] [2018-07-23 13:42:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:26,999 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 13:42:27,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 13:42:27,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:27,015 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-23 13:42:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:27,039 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-23 13:42:27,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:42:27,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-23 13:42:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:27,052 INFO L225 Difference]: With dead ends: 10 [2018-07-23 13:42:27,052 INFO L226 Difference]: Without dead ends: 7 [2018-07-23 13:42:27,055 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 13:42:27,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-23 13:42:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-23 13:42:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:42:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:42:27,097 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 13:42:27,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:27,097 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:42:27,097 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 13:42:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:42:27,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:42:27,098 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:27,099 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 13:42:27,099 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:27,099 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-23 13:42:27,100 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:27,229 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:42:27,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:42:27,229 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:27,230 INFO L185 omatonBuilderFactory]: Interpolants [48#(and (<= (+ ULTIMATE.start_main_~lo~5 2) ULTIMATE.start_main_~hi~5) (<= ULTIMATE.start_main_~hi~5 (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5))), 49#(and (<= ULTIMATE.start_main_~lo~5 ULTIMATE.start_main_~hi~5) (or (<= ULTIMATE.start_main_~hi~5 ULTIMATE.start_main_~lo~5) (<= ULTIMATE.start_main_~hi~5 (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5)))), 46#true, 47#false] [2018-07-23 13:42:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:27,237 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:42:27,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:42:27,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:42:27,238 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-23 13:42:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:27,273 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 13:42:27,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:42:27,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-23 13:42:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:27,275 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:42:27,275 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 13:42:27,276 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:42:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 13:42:27,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 13:42:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:42:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 13:42:27,280 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 13:42:27,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:27,281 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 13:42:27,281 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:42:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 13:42:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:42:27,281 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:42:27,282 INFO L357 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 13:42:27,282 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:42:27,282 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-23 13:42:27,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:42:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:42:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 13:42:27,351 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:42:27,351 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:42:27,351 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:42:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:42:27,352 INFO L185 omatonBuilderFactory]: Interpolants [90#true, 91#false, 92#(and (<= ULTIMATE.start_main_~hi~5 (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5)) (<= (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5) ULTIMATE.start_main_~hi~5)), 93#(and (<= ULTIMATE.start_main_~lo~5 ULTIMATE.start_main_~hi~5) (or (<= ULTIMATE.start_main_~hi~5 ULTIMATE.start_main_~lo~5) (<= ULTIMATE.start_main_~hi~5 (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5))))] [2018-07-23 13:42:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-23 13:42:27,352 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:42:27,353 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:42:27,353 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:42:27,353 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-23 13:42:27,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:42:27,401 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:42:27,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 13:42:27,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-23 13:42:27,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:42:27,404 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:42:27,404 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:42:27,405 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:42:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:42:27,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:42:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:42:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:42:27,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-23 13:42:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:42:27,410 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:42:27,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:42:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:42:27,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:42:27,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:42:27,462 INFO L417 ceAbstractionStarter]: At program point L41(lines 22 41) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5))) (and (<= ULTIMATE.start_main_~lo~5 ULTIMATE.start_main_~hi~5) (<= ULTIMATE.start_main_~hi~5 .cse0) (<= .cse0 ULTIMATE.start_main_~hi~5))) [2018-07-23 13:42:27,463 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 43) the Hoare annotation is: false [2018-07-23 13:42:27,463 INFO L417 ceAbstractionStarter]: At program point L25(lines 25 36) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~mid~5) ULTIMATE.start_main_~lo~5))) (and (<= ULTIMATE.start_main_~lo~5 ULTIMATE.start_main_~hi~5) (<= ULTIMATE.start_main_~hi~5 .cse0) (<= .cse0 ULTIMATE.start_main_~hi~5))) [2018-07-23 13:42:27,463 INFO L417 ceAbstractionStarter]: At program point L35(lines 35 42) the Hoare annotation is: false [2018-07-23 13:42:27,464 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 44) the Hoare annotation is: true [2018-07-23 13:42:27,464 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 44) no Hoare annotation was computed. [2018-07-23 13:42:27,464 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 44) the Hoare annotation is: false [2018-07-23 13:42:27,475 INFO L202 PluginConnector]: Adding new model cggmp2005_variant.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:42:27 BoogieIcfgContainer [2018-07-23 13:42:27,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:42:27,477 INFO L168 Benchmark]: Toolchain (without parser) took 938.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 13:42:27,480 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:42:27,481 INFO L168 Benchmark]: Boogie Preprocessor took 49.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 13:42:27,482 INFO L168 Benchmark]: RCFGBuilder took 223.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 13:42:27,484 INFO L168 Benchmark]: TraceAbstraction took 660.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 13:42:27,489 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.99 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 223.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 660.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (main_~lo~5 <= main_~hi~5 && main_~hi~5 <= 2 * main_~mid~5 + main_~lo~5) && 2 * main_~mid~5 + main_~lo~5 <= main_~hi~5 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (main_~lo~5 <= main_~hi~5 && main_~hi~5 <= 2 * main_~mid~5 + main_~lo~5) && 2 * main_~mid~5 + main_~lo~5 <= main_~hi~5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 2/8 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 40 HoareAnnotationTreeSize, 6 FomulaSimplifications, 112 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 943 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 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/cggmp2005_variant.c.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-42-27-512.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005_variant.c.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-42-27-512.csv Received shutdown request...