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/loopAcceleration/loopWithConstantAssignment.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:17:04,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:17:04,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:17:04,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:17:04,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:17:04,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:17:04,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:17:04,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:17:04,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:17:04,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:17:04,339 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:17:04,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:17:04,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:17:04,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:17:04,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:17:04,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:17:04,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:17:04,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:17:04,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:17:04,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:17:04,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:17:04,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:17:04,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:17:04,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:17:04,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 11:17:04,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:17:04,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:17:04,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:17:04,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:17:04,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:17:04,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:17:04,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:17:04,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:17:04,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:17:04,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:17:04,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:17:04,430 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:17:04,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:17:04,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:17:04,455 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:17:04,455 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:17:04,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/loopAcceleration/loopWithConstantAssignment.bpl [2019-08-05 11:17:04,457 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/loopAcceleration/loopWithConstantAssignment.bpl' [2019-08-05 11:17:04,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:17:04,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:17:04,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:17:04,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:17:04,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:17:04,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,540 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 11:17:04,541 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 11:17:04,541 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 11:17:04,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:17:04,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:17:04,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:17:04,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:17:04,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/1) ... [2019-08-05 11:17:04,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:17:04,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:17:04,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:17:04,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:17:04,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (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 11:17:04,648 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 11:17:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 11:17:04,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 11:17:04,823 INFO L275 CfgBuilder]: Using library mode [2019-08-05 11:17:04,823 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:17:04,825 INFO L202 PluginConnector]: Adding new model loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:17:04 BoogieIcfgContainer [2019-08-05 11:17:04,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:17:04,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:17:04,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:17:04,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:17:04,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:17:04" (1/2) ... [2019-08-05 11:17:04,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eac4a54 and model type loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:17:04, skipping insertion in model container [2019-08-05 11:17:04,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:17:04" (2/2) ... [2019-08-05 11:17:04,836 INFO L109 eAbstractionObserver]: Analyzing ICFG loopWithConstantAssignment.bpl [2019-08-05 11:17:04,846 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:17:04,853 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-08-05 11:17:04,870 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-08-05 11:17:04,896 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:17:04,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:17:04,897 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:17:04,897 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:17:04,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:17:04,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:17:04,898 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:17:04,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:17:04,898 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:17:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-08-05 11:17:04,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:17:04,920 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:17:04,921 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:17:04,923 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:17:04,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:17:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash 929672, now seen corresponding path program 1 times [2019-08-05 11:17:04,971 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:17:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:17:05,000 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:17:05,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:17:05,043 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 11:17:05,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:17:05,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:17:05,050 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:17:05,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:17:05,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:17:05,065 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-08-05 11:17:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:17:05,154 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-08-05 11:17:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:17:05,157 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 11:17:05,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:17:05,186 INFO L225 Difference]: With dead ends: 9 [2019-08-05 11:17:05,186 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 11:17:05,192 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 11:17:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 11:17:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-08-05 11:17:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 11:17:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-08-05 11:17:05,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 4 [2019-08-05 11:17:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:17:05,254 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-08-05 11:17:05,254 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:17:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-08-05 11:17:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:17:05,255 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:17:05,255 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 11:17:05,255 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:17:05,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:17:05,256 INFO L82 PathProgramCache]: Analyzing trace with hash 28754466, now seen corresponding path program 1 times [2019-08-05 11:17:05,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:17:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:17:05,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:17:05,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:17:05,337 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 11:17:05,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:17:05,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 11:17:05,339 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:17:05,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:17:05,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:17:05,340 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-08-05 11:17:05,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:17:05,404 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-08-05 11:17:05,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:17:05,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 11:17:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:17:05,405 INFO L225 Difference]: With dead ends: 9 [2019-08-05 11:17:05,406 INFO L226 Difference]: Without dead ends: 9 [2019-08-05 11:17:05,407 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 11:17:05,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-05 11:17:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-05 11:17:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 11:17:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-08-05 11:17:05,409 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2019-08-05 11:17:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:17:05,410 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-08-05 11:17:05,410 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:17:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2019-08-05 11:17:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 11:17:05,411 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:17:05,411 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 11:17:05,411 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:17:05,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:17:05,412 INFO L82 PathProgramCache]: Analyzing trace with hash 891323080, now seen corresponding path program 2 times [2019-08-05 11:17:05,413 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:17:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:17:05,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-05 11:17:05,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:17:05,488 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 11:17:05,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:17:05,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 11:17:05,489 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:17:05,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:17:05,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:17:05,490 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2019-08-05 11:17:05,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:17:05,520 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 11:17:05,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:17:05,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-08-05 11:17:05,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:17:05,522 INFO L225 Difference]: With dead ends: 8 [2019-08-05 11:17:05,522 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 11:17:05,523 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:17:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 11:17:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-08-05 11:17:05,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 11:17:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-08-05 11:17:05,525 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-08-05 11:17:05,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:17:05,526 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-08-05 11:17:05,526 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:17:05,526 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-08-05 11:17:05,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 11:17:05,527 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:17:05,527 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-08-05 11:17:05,527 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:17:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:17:05,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1861211750, now seen corresponding path program 1 times [2019-08-05 11:17:05,529 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:17:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:17:05,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:17:05,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:17:05,570 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 11:17:05,571 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:17:05,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:17:05,571 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:17:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:17:05,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:17:05,572 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2019-08-05 11:17:05,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:17:05,578 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 11:17:05,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:17:05,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-08-05 11:17:05,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:17:05,579 INFO L225 Difference]: With dead ends: 7 [2019-08-05 11:17:05,580 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:17:05,580 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 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 11:17:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:17:05,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:17:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:17:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:17:05,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-08-05 11:17:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:17:05,582 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:17:05,582 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:17:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:17:05,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:17:05,588 INFO L202 PluginConnector]: Adding new model loopWithConstantAssignment.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:17:05 BoogieIcfgContainer [2019-08-05 11:17:05,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:17:05,591 INFO L168 Benchmark]: Toolchain (without parser) took 1092.10 ms. Allocated memory is still 141.6 MB. Free memory was 111.3 MB in the beginning and 65.1 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:17:05,592 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 141.6 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 11:17:05,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.97 ms. Allocated memory is still 141.6 MB. Free memory was 111.1 MB in the beginning and 109.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:17:05,594 INFO L168 Benchmark]: Boogie Preprocessor took 29.13 ms. Allocated memory is still 141.6 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 11:17:05,595 INFO L168 Benchmark]: RCFGBuilder took 251.41 ms. Allocated memory is still 141.6 MB. Free memory was 108.0 MB in the beginning and 98.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:17:05,596 INFO L168 Benchmark]: TraceAbstraction took 758.88 ms. Allocated memory is still 141.6 MB. Free memory was 98.4 MB in the beginning and 65.1 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:17:05,601 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 0.26 ms. Allocated memory is still 141.6 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 43.97 ms. Allocated memory is still 141.6 MB. Free memory was 111.1 MB in the beginning and 109.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.13 ms. Allocated memory is still 141.6 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 251.41 ms. Allocated memory is still 141.6 MB. Free memory was 108.0 MB in the beginning and 98.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 758.88 ms. Allocated memory is still 141.6 MB. Free memory was 98.4 MB in the beginning and 65.1 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 2 error locations. SAFE Result, 0.6s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 6 SDslu, 3 SDs, 0 SdLazy, 22 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 226 SizeOfPredicates, 2 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 6/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...