java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:24:00,493 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:24:00,495 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:24:00,507 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:24:00,507 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:24:00,508 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:24:00,510 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:24:00,511 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:24:00,513 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:24:00,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:24:00,515 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:24:00,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:24:00,516 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:24:00,517 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:24:00,518 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:24:00,519 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:24:00,520 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:24:00,522 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:24:00,523 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:24:00,525 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:24:00,526 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:24:00,527 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:24:00,530 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:24:00,530 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:24:00,530 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:24:00,531 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:24:00,532 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:24:00,533 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:24:00,534 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:24:00,535 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:24:00,536 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:24:00,536 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:24:00,537 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:24:00,537 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:24:00,538 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:24:00,539 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:24:00,539 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:24:00,549 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:24:00,549 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:24:00,553 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:24:00,553 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:24:00,554 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:24:00,554 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:24:00,554 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:24:00,554 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:24:00,624 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:24:00,642 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:24:00,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:24:00,651 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:24:00,652 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:24:00,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl [2018-07-25 13:24:00,653 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl' [2018-07-25 13:24:00,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:24:00,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:24:00,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:24:00,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:24:00,700 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:24:00,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:24:00,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:24:00,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:24:00,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:24:00,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:24:00,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:24:00,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:24:00,767 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:24:00,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/1) ... [2018-07-25 13:24:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:24:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:24:00,999 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:24:01,001 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:24:01 BoogieIcfgContainer [2018-07-25 13:24:01,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:24:01,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:24:01,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:24:01,007 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:24:01,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:24:00" (1/2) ... [2018-07-25 13:24:01,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388099ac and model type count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:24:01, skipping insertion in model container [2018-07-25 13:24:01,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:24:01" (2/2) ... [2018-07-25 13:24:01,012 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bpl [2018-07-25 13:24:01,024 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:24:01,034 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:24:01,081 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:24:01,082 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:24:01,082 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:24:01,082 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:24:01,082 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:24:01,082 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:24:01,083 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:24:01,083 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:24:01,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:24:01,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:24:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:24:01,105 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:01,106 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:24:01,107 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:01,113 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-07-25 13:24:01,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:01,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:01,195 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:24:01,195 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:24:01,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:24:01,210 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:24:01,211 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:24:01,214 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 13:24:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:01,259 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 13:24:01,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:24:01,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 13:24:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:01,273 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:24:01,277 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:24:01,281 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:24:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:24:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 13:24:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:24:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:24:01,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:24:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:01,320 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:24:01,320 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:24:01,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:24:01,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:24:01,321 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:01,321 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:24:01,321 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:01,322 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-07-25 13:24:01,322 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:01,372 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:01,372 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 13:24:01,375 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 13:24:01,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 13:24:01,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:24:01,376 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 13:24:01,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:01,410 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:24:01,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:24:01,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 13:24:01,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:01,412 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:24:01,412 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 13:24:01,416 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:24:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 13:24:01,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 13:24:01,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:24:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:24:01,421 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:24:01,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:01,421 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:24:01,421 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 13:24:01,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:24:01,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:24:01,422 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:24:01,422 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:24:01,423 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:24:01,423 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-07-25 13:24:01,423 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:24:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:24:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:24:01,510 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:24:01,510 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:24:01,510 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:24:01,511 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:24:01,511 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:24:01,512 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-25 13:24:01,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:24:01,574 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:24:01,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 13:24:01,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 13:24:01,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:24:01,575 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:24:01,575 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:24:01,576 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:24:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:24:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:24:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:24:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:24:01,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 13:24:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:24:01,578 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:24:01,578 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:24:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:24:01,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:24:01,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:24:01,669 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 35) the Hoare annotation is: false [2018-07-25 13:24:01,669 INFO L418 ceAbstractionStarter]: At program point L32(lines 32 33) the Hoare annotation is: false [2018-07-25 13:24:01,669 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 35) the Hoare annotation is: true [2018-07-25 13:24:01,669 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-07-25 13:24:01,670 INFO L418 ceAbstractionStarter]: At program point L28(lines 13 28) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~4 0) (and (<= ULTIMATE.start_main_~i~4 1000000) (= ULTIMATE.start___VERIFIER_assert_~cond 1))) [2018-07-25 13:24:01,670 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 34) the Hoare annotation is: false [2018-07-25 13:24:01,671 INFO L418 ceAbstractionStarter]: At program point L20(lines 20 29) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~i~4 999999)) [2018-07-25 13:24:01,682 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:24:01 BoogieIcfgContainer [2018-07-25 13:24:01,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:24:01,684 INFO L168 Benchmark]: Toolchain (without parser) took 985.63 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. [2018-07-25 13:24:01,686 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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. [2018-07-25 13:24:01,687 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.73 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. [2018-07-25 13:24:01,688 INFO L168 Benchmark]: Boogie Preprocessor took 23.62 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. [2018-07-25 13:24:01,689 INFO L168 Benchmark]: RCFGBuilder took 235.40 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:24:01,692 INFO L168 Benchmark]: TraceAbstraction took 680.02 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-25 13:24:01,700 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 0.18 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 Procedure Inliner took 41.73 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 23.62 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 235.40 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 680.02 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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: 32]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: main_~i~4 <= 0 || (main_~i~4 <= 1000000 && __VERIFIER_assert_~cond == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: __VERIFIER_assert_~cond == 1 && main_~i~4 <= 999999 - 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: 8 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 23 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 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, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 22 HoareAnnotationTreeSize, 6 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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/count_by_1_variant.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-24-01-719.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-24-01-719.csv Received shutdown request...