java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/abstractInterpretation/unclassified/CountTillBound-LoopWithConst_noAxiom.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:15:57,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:15:57,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:15:57,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:15:57,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:15:57,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:15:57,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:15:57,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:15:57,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:15:57,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:15:57,217 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:15:57,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:15:57,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:15:57,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:15:57,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:15:57,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:15:57,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:15:57,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:15:57,224 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:15:57,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:15:57,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:15:57,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:15:57,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:15:57,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:15:57,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:15:57,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:15:57,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:15:57,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:15:57,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:15:57,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:15:57,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:15:57,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:15:57,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:15:57,239 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:15:57,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:15:57,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:15:57,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:15:57,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:15:57,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:15:57,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:15:57,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:15:57,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:15:57,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:15:57,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:15:57,287 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:15:57,288 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:15:57,289 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/unclassified/CountTillBound-LoopWithConst_noAxiom.bpl [2019-08-05 11:15:57,289 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/unclassified/CountTillBound-LoopWithConst_noAxiom.bpl' [2019-08-05 11:15:57,323 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:15:57,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:15:57,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:15:57,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:15:57,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:15:57,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,357 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:15:57,357 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:15:57,358 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:15:57,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:15:57,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:15:57,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:15:57,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:15:57,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... [2019-08-05 11:15:57,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:15:57,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:15:57,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:15:57,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:15:57,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 11:15:57,455 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 11:15:57,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 11:15:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 11:15:57,675 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:15:57,676 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:15:57,677 INFO L202 PluginConnector]: Adding new model CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:15:57 BoogieIcfgContainer [2019-08-05 11:15:57,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:15:57,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:15:57,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:15:57,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:15:57,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:15:57" (1/2) ... [2019-08-05 11:15:57,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bee0a and model type CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:15:57, skipping insertion in model container [2019-08-05 11:15:57,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:15:57" (2/2) ... [2019-08-05 11:15:57,690 INFO L109 eAbstractionObserver]: Analyzing ICFG CountTillBound-LoopWithConst_noAxiom.bpl [2019-08-05 11:15:57,700 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:15:57,708 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:15:57,722 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:15:57,744 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:15:57,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:15:57,745 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:15:57,746 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:15:57,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:15:57,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:15:57,746 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:15:57,746 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:15:57,747 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:15:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 11:15:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:15:57,768 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:15:57,769 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:15:57,771 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:15:57,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:15:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash 31970, now seen corresponding path program 1 times [2019-08-05 11:15:57,822 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:15:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:15:57,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:15:57,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:15:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:15:57,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:15:57,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:15:57,944 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:15:57,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:15:57,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:15:57,961 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2019-08-05 11:15:58,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:15:58,042 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-08-05 11:15:58,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:15:58,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:15:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:15:58,074 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:15:58,075 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:15:58,077 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:15:58,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:15:58,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:15:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:15:58,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 11:15:58,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 11:15:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:15:58,140 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 11:15:58,140 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:15:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 11:15:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:15:58,141 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:15:58,141 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:15:58,142 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:15:58,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:15:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash 989126, now seen corresponding path program 1 times [2019-08-05 11:15:58,143 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:15:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:15:58,152 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:15:58,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:15:58,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 11:15:58,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:15:58,322 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 11:15:58,324 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 11:15:58,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 11:15:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:15:58,324 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2019-08-05 11:15:58,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:15:58,369 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 11:15:58,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 11:15:58,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2019-08-05 11:15:58,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:15:58,370 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:15:58,370 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:15:58,372 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:15:58,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:15:58,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:15:58,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:15:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 11:15:58,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-08-05 11:15:58,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:15:58,375 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 11:15:58,375 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 11:15:58,375 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 11:15:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:15:58,376 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:15:58,376 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 11:15:58,376 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:15:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:15:58,377 INFO L82 PathProgramCache]: Analyzing trace with hash 30660962, now seen corresponding path program 2 times [2019-08-05 11:15:58,378 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:15:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:15:58,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 11:15:58,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:15:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-05 11:15:58,471 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:15:58,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 11:15:58,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:15:58,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:15:58,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:15:58,473 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2019-08-05 11:15:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:15:58,510 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 11:15:58,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:15:58,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 11:15:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:15:58,511 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:15:58,512 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:15:58,512 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:15:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:15:58,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:15:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:15:58,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:15:58,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-08-05 11:15:58,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:15:58,514 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:15:58,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:15:58,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:15:58,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:15:58,519 INFO L202 PluginConnector]: Adding new model CountTillBound-LoopWithConst_noAxiom.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:15:58 BoogieIcfgContainer [2019-08-05 11:15:58,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:15:58,522 INFO L168 Benchmark]: Toolchain (without parser) took 1196.37 ms. Allocated memory is still 134.7 MB. Free memory was 111.1 MB in the beginning and 67.9 MB in the end (delta: 43.2 MB). Peak memory consumption was 43.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:15:58,523 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 112.3 MB in the beginning and 112.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:15:58,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.85 ms. Allocated memory is still 134.7 MB. Free memory was 111.1 MB in the beginning and 109.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:15:58,525 INFO L168 Benchmark]: Boogie Preprocessor took 21.00 ms. Allocated memory is still 134.7 MB. Free memory was 109.1 MB in the beginning and 108.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:15:58,526 INFO L168 Benchmark]: RCFGBuilder took 298.01 ms. Allocated memory is still 134.7 MB. Free memory was 108.0 MB in the beginning and 99.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:15:58,527 INFO L168 Benchmark]: TraceAbstraction took 837.87 ms. Allocated memory is still 134.7 MB. Free memory was 99.0 MB in the beginning and 67.9 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:15:58,532 INFO L335 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 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 112.3 MB in the beginning and 112.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.85 ms. Allocated memory is still 134.7 MB. Free memory was 111.1 MB in the beginning and 109.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.00 ms. Allocated memory is still 134.7 MB. Free memory was 109.1 MB in the beginning and 108.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 298.01 ms. Allocated memory is still 134.7 MB. Free memory was 108.0 MB in the beginning and 99.2 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 837.87 ms. Allocated memory is still 134.7 MB. Free memory was 99.0 MB in the beginning and 67.9 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 19 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 136 SizeOfPredicates, 1 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...