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/regression/non_con/loop-literal-widening-predicate-weakening.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:13:54,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:13:54,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:13:55,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:13:55,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:13:55,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:13:55,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:13:55,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:13:55,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:13:55,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:13:55,022 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:13:55,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:13:55,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:13:55,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:13:55,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:13:55,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:13:55,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:13:55,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:13:55,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:13:55,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:13:55,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:13:55,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:13:55,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:13:55,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:13:55,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 11:13:55,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:13:55,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:13:55,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:13:55,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:13:55,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:13:55,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:13:55,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:13:55,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:13:55,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:13:55,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:13:55,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:13:55,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:13:55,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:13:55,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:13:55,095 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:13:55,096 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:13:55,096 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/non_con/loop-literal-widening-predicate-weakening.bpl [2019-08-05 11:13:55,097 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/non_con/loop-literal-widening-predicate-weakening.bpl' [2019-08-05 11:13:55,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:13:55,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:13:55,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:13:55,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:13:55,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:13:55,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:13:55,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:13:55,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:13:55,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:13:55,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/1) ... [2019-08-05 11:13:55,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:13:55,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:13:55,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:13:55,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:13:55,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (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 11:13:55,257 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:13:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:13:55,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:13:55,509 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:13:55,509 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:13:55,513 INFO L202 PluginConnector]: Adding new model loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:13:55 BoogieIcfgContainer [2019-08-05 11:13:55,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:13:55,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:13:55,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:13:55,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:13:55,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:55" (1/2) ... [2019-08-05 11:13:55,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181b6420 and model type loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:13:55, skipping insertion in model container [2019-08-05 11:13:55,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:13:55" (2/2) ... [2019-08-05 11:13:55,526 INFO L109 eAbstractionObserver]: Analyzing ICFG loop-literal-widening-predicate-weakening.bpl [2019-08-05 11:13:55,537 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:13:55,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 11:13:55,563 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 11:13:55,595 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:13:55,596 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:13:55,596 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:13:55,596 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:13:55,596 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:13:55,596 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:13:55,597 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:13:55,597 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:13:55,597 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:13:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 11:13:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:13:55,623 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:55,624 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:13:55,626 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:55,631 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2019-08-05 11:13:55,677 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:55,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 11:13:55,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:55,771 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 11:13:55,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:55,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:13:55,779 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:13:55,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:13:55,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:13:55,795 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 11:13:55,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:55,852 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 11:13:55,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:13:55,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 11:13:55,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:55,875 INFO L225 Difference]: With dead ends: 6 [2019-08-05 11:13:55,875 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 11:13:55,877 INFO L628 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 [2019-08-05 11:13:55,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 11:13:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 11:13:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 11:13:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 11:13:55,950 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 11:13:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:55,950 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 11:13:55,950 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:13:55,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 11:13:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 11:13:55,951 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:55,952 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 11:13:55,955 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:55,956 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2019-08-05 11:13:55,957 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:55,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:13:55,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:56,046 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 11:13:56,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 11:13:56,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 11:13:56,048 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:13:56,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:13:56,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:13:56,049 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 11:13:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:56,118 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 11:13:56,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 11:13:56,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 11:13:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:56,119 INFO L225 Difference]: With dead ends: 6 [2019-08-05 11:13:56,119 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:13:56,121 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:13:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:13:56,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:13:56,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:13:56,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 11:13:56,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-08-05 11:13:56,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:56,123 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 11:13:56,123 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:13:56,124 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 11:13:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:13:56,124 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:56,124 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 11:13:56,125 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:56,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2019-08-05 11:13:56,127 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:56,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 11:13:56,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:56,153 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 11:13:56,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:56,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:13:56,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:13:56,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:13:56,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:13:56,156 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 3 states. [2019-08-05 11:13:56,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:56,186 INFO L93 Difference]: Finished difference Result 5 states and 5 transitions. [2019-08-05 11:13:56,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:13:56,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-08-05 11:13:56,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:56,187 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:13:56,187 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:13:56,188 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:13:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:13:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:13:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:13:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:13:56,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-08-05 11:13:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:56,190 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:13:56,190 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:13:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:13:56,190 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:13:56,195 INFO L202 PluginConnector]: Adding new model loop-literal-widening-predicate-weakening.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:13:56 BoogieIcfgContainer [2019-08-05 11:13:56,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:13:56,198 INFO L168 Benchmark]: Toolchain (without parser) took 1066.54 ms. Allocated memory is still 132.6 MB. Free memory was 110.1 MB in the beginning and 70.0 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:56,199 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory is still 111.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 11:13:56,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 132.6 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:56,201 INFO L168 Benchmark]: Boogie Preprocessor took 22.30 ms. Allocated memory is still 132.6 MB. Free memory was 108.4 MB in the beginning and 107.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:56,202 INFO L168 Benchmark]: RCFGBuilder took 324.01 ms. Allocated memory is still 132.6 MB. Free memory was 107.0 MB in the beginning and 98.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:56,203 INFO L168 Benchmark]: TraceAbstraction took 678.29 ms. Allocated memory is still 132.6 MB. Free memory was 97.6 MB in the beginning and 70.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:56,211 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 132.6 MB. Free memory is still 111.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 132.6 MB. Free memory was 110.1 MB in the beginning and 108.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.30 ms. Allocated memory is still 132.6 MB. Free memory was 108.4 MB in the beginning and 107.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 324.01 ms. Allocated memory is still 132.6 MB. Free memory was 107.0 MB in the beginning and 98.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 678.29 ms. Allocated memory is still 132.6 MB. Free memory was 97.6 MB in the beginning and 70.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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, 5 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 14 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 8 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...