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/half.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:46:06,548 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:46:06,551 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:46:06,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:46:06,564 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:46:06,565 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:46:06,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:46:06,568 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:46:06,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:46:06,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:46:06,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:46:06,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:46:06,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:46:06,574 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:46:06,576 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:46:06,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:46:06,577 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:46:06,579 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:46:06,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:46:06,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:46:06,585 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:46:06,586 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:46:06,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:46:06,591 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:46:06,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:46:06,596 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:46:06,598 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:46:06,602 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:46:06,603 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:46:06,604 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:46:06,604 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:46:06,605 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:46:06,611 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:46:06,632 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:46:06,632 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:46:06,634 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:46:06,634 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:46:06,634 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:46:06,634 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:46:06,634 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:46:06,635 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:46:06,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:46:06,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:46:06,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:46:06,731 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:46:06,732 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:46:06,733 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl [2018-07-25 08:46:06,733 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/half.i_3.bpl' [2018-07-25 08:46:06,788 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:46:06,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:46:06,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:46:06,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:46:06,791 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:46:06,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:46:06,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:46:06,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:46:06,837 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:46:06,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:46:06,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:46:06,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:46:06,861 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:46:06,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/1) ... [2018-07-25 08:46:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:46:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:46:07,149 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:46:07,150 INFO L202 PluginConnector]: Adding new model half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:46:07 BoogieIcfgContainer [2018-07-25 08:46:07,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:46:07,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:46:07,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:46:07,155 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:46:07,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:46:06" (1/2) ... [2018-07-25 08:46:07,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f96b60c and model type half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:46:07, skipping insertion in model container [2018-07-25 08:46:07,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:46:07" (2/2) ... [2018-07-25 08:46:07,160 INFO L112 eAbstractionObserver]: Analyzing ICFG half.i_3.bpl [2018-07-25 08:46:07,170 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:46:07,177 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:46:07,224 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:46:07,224 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:46:07,225 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:46:07,225 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:46:07,225 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:46:07,225 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:46:07,225 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:46:07,225 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:46:07,226 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:46:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:46:07,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:46:07,249 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,250 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:46:07,252 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,258 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-07-25 08:46:07,264 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:07,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:07,396 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 08:46:07,398 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:46:07,399 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-25 08:46:07,403 INFO L451 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-25 08:46:07,415 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-25 08:46:07,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-25 08:46:07,419 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-07-25 08:46:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,462 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-07-25 08:46:07,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-25 08:46:07,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-07-25 08:46:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,478 INFO L225 Difference]: With dead ends: 10 [2018-07-25 08:46:07,478 INFO L226 Difference]: Without dead ends: 7 [2018-07-25 08:46:07,482 INFO L574 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 [2018-07-25 08:46:07,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-07-25 08:46:07,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-07-25 08:46:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:46:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:46:07,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:46:07,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,528 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:46:07,528 INFO L473 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-25 08:46:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:46:07,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:46:07,529 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,529 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:46:07,530 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,530 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-07-25 08:46:07,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:07,596 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 08:46:07,596 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:07,596 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:46:07,599 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:46:07,600 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:46:07,600 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:07,600 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-07-25 08:46:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,652 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:46:07,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:46:07,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-07-25 08:46:07,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,654 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:46:07,654 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:46:07,655 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:46:07,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:46:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:46:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:46:07,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:46:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,660 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:46:07,661 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:46:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:46:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:46:07,661 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:46:07,662 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:46:07,662 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:46:07,662 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-07-25 08:46:07,663 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:46:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:46:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:46:07,734 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:46:07,734 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:46:07,734 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:46:07,735 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:46:07,735 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:07,735 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-25 08:46:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:46:07,746 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:46:07,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:46:07,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 08:46:07,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:46:07,748 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:46:07,748 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:46:07,748 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:46:07,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:46:07,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:46:07,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:46:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:46:07,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 08:46:07,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:46:07,750 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:46:07,750 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:46:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:46:07,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:46:07,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:46:07,844 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 48) the Hoare annotation is: false [2018-07-25 08:46:07,844 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 48) the Hoare annotation is: true [2018-07-25 08:46:07,845 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 48) no Hoare annotation was computed. [2018-07-25 08:46:07,846 INFO L418 ceAbstractionStarter]: At program point L25(lines 25 36) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~5))) (or (and (<= (+ ULTIMATE.start_main_~i~5 1) .cse0) (<= ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)) (and (<= ULTIMATE.start_main_~i~5 .cse0) (<= .cse0 ULTIMATE.start_main_~i~5) (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0)))) [2018-07-25 08:46:07,847 INFO L418 ceAbstractionStarter]: At program point L45(lines 22 45) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~n~5))) (or (and (<= (+ ULTIMATE.start_main_~i~5 1) .cse0) (<= ULTIMATE.start_main_~n~5 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~i~5 1) (<= 1 ULTIMATE.start_main_~i~5)) (and (<= ULTIMATE.start_main_~i~5 .cse0) (<= .cse0 ULTIMATE.start_main_~i~5) (<= 0 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 0)))) [2018-07-25 08:46:07,847 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 47) the Hoare annotation is: false [2018-07-25 08:46:07,847 INFO L418 ceAbstractionStarter]: At program point L35(lines 35 46) the Hoare annotation is: false [2018-07-25 08:46:07,860 INFO L202 PluginConnector]: Adding new model half.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:46:07 BoogieIcfgContainer [2018-07-25 08:46:07,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:46:07,862 INFO L168 Benchmark]: Toolchain (without parser) took 1073.06 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:46:07,864 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:07,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:07,866 INFO L168 Benchmark]: Boogie Preprocessor took 22.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:46:07,867 INFO L168 Benchmark]: RCFGBuilder took 289.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:46:07,868 INFO L168 Benchmark]: TraceAbstraction took 709.50 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 08:46:07,873 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 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 289.87 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 709.50 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: 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: 47]: 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: 22]: Loop Invariant Derived loop invariant: (((main_~i~5 + 1 <= 2 * main_~n~5 && main_~n~5 <= main_~k~5) && main_~i~5 <= 1) && 1 <= main_~i~5) || (((main_~i~5 <= 2 * main_~n~5 && 2 * main_~n~5 <= main_~i~5) && 0 <= main_~i~5) && main_~i~5 <= 0) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (((main_~i~5 + 1 <= 2 * main_~n~5 && main_~n~5 <= main_~k~5) && main_~i~5 <= 1) && 1 <= main_~i~5) || (((main_~i~5 <= 2 * main_~n~5 && 2 * main_~n~5 <= main_~i~5) && 0 <= main_~i~5) && main_~i~5 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 8 SDs, 0 SdLazy, 14 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 74 HoareAnnotationTreeSize, 6 FomulaSimplifications, 18 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 18 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, 559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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/half.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-46-07-888.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-46-07-888.csv Received shutdown request...