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/stmt-assume-1.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 11:13:56,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 11:13:56,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 11:13:56,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 11:13:56,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 11:13:56,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 11:13:56,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 11:13:56,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 11:13:56,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 11:13:56,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 11:13:56,242 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 11:13:56,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 11:13:56,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 11:13:56,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 11:13:56,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 11:13:56,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 11:13:56,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 11:13:56,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 11:13:56,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 11:13:56,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 11:13:56,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 11:13:56,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 11:13:56,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 11:13:56,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 11:13:56,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 11:13:56,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 11:13:56,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 11:13:56,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 11:13:56,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 11:13:56,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 11:13:56,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 11:13:56,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 11:13:56,269 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 11:13:56,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 11:13:56,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 11:13:56,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 11:13:56,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 11:13:56,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 11:13:56,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 11:13:56,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 11:13:56,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 11:13:56,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 11:13:56,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 11:13:56,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 11:13:56,318 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 11:13:56,319 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 11:13:56,319 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/non_con/stmt-assume-1.bpl [2019-08-05 11:13:56,320 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/non_con/stmt-assume-1.bpl' [2019-08-05 11:13:56,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 11:13:56,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 11:13:56,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 11:13:56,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 11:13:56,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 11:13:56,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 11:13:56,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 11:13:56,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 11:13:56,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 11:13:56,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/1) ... [2019-08-05 11:13:56,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 11:13:56,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 11:13:56,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 11:13:56,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 11:13:56,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (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 11:13:56,477 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-05 11:13:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 11:13:56,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 11:13:56,772 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 11:13:56,772 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 11:13:56,773 INFO L202 PluginConnector]: Adding new model stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:13:56 BoogieIcfgContainer [2019-08-05 11:13:56,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 11:13:56,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 11:13:56,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 11:13:56,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 11:13:56,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 11:13:56" (1/2) ... [2019-08-05 11:13:56,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e60716e and model type stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 11:13:56, skipping insertion in model container [2019-08-05 11:13:56,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 11:13:56" (2/2) ... [2019-08-05 11:13:56,782 INFO L109 eAbstractionObserver]: Analyzing ICFG stmt-assume-1.bpl [2019-08-05 11:13:56,791 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 11:13:56,798 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-08-05 11:13:56,815 INFO L252 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-08-05 11:13:56,843 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 11:13:56,843 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 11:13:56,844 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 11:13:56,844 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 11:13:56,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 11:13:56,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 11:13:56,844 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 11:13:56,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 11:13:56,845 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 11:13:56,860 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-08-05 11:13:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 11:13:56,867 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:56,868 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 11:13:56,871 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:56,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:56,877 INFO L82 PathProgramCache]: Analyzing trace with hash 962, now seen corresponding path program 1 times [2019-08-05 11:13:56,929 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:56,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 1 conjunts are in the unsatisfiable core [2019-08-05 11:13:56,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:56,965 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 11:13:56,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:56,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 11:13:56,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-08-05 11:13:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-08-05 11:13:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-08-05 11:13:56,984 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 2 states. [2019-08-05 11:13:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:56,998 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-08-05 11:13:56,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-08-05 11:13:56,999 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 2 [2019-08-05 11:13:57,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:57,010 INFO L225 Difference]: With dead ends: 8 [2019-08-05 11:13:57,011 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 11:13:57,013 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-08-05 11:13:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 11:13:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 11:13:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 11:13:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2019-08-05 11:13:57,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 2 [2019-08-05 11:13:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:57,046 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2019-08-05 11:13:57,046 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-08-05 11:13:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2019-08-05 11:13:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 11:13:57,047 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:57,047 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 11:13:57,047 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash 29856, now seen corresponding path program 1 times [2019-08-05 11:13:57,049 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:57,067 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 11:13:57,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:57,215 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-08-05 11:13:57,295 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 11:13:57,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:57,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:13:57,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 11:13:57,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 11:13:57,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 11:13:57,299 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand 4 states. [2019-08-05 11:13:57,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:57,443 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-08-05 11:13:57,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 11:13:57,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2019-08-05 11:13:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:57,444 INFO L225 Difference]: With dead ends: 6 [2019-08-05 11:13:57,444 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 11:13:57,445 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-08-05 11:13:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 11:13:57,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 11:13:57,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 11:13:57,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5 transitions. [2019-08-05 11:13:57,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 5 transitions. Word has length 3 [2019-08-05 11:13:57,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:57,447 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 5 transitions. [2019-08-05 11:13:57,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 11:13:57,448 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 5 transitions. [2019-08-05 11:13:57,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 11:13:57,448 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 11:13:57,448 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 11:13:57,449 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr3ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT]=== [2019-08-05 11:13:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 11:13:57,449 INFO L82 PathProgramCache]: Analyzing trace with hash 28692770, now seen corresponding path program 1 times [2019-08-05 11:13:57,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 11:13:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 11:13:57,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-08-05 11:13:57,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 11:13:57,492 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 11:13:57,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 11:13:57,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 11:13:57,493 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 11:13:57,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 11:13:57,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 11:13:57,494 INFO L87 Difference]: Start difference. First operand 6 states and 5 transitions. Second operand 3 states. [2019-08-05 11:13:57,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 11:13:57,531 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-08-05 11:13:57,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 11:13:57,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-08-05 11:13:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 11:13:57,532 INFO L225 Difference]: With dead ends: 5 [2019-08-05 11:13:57,532 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 11:13:57,533 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 11:13:57,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 11:13:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 11:13:57,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 11:13:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 11:13:57,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-08-05 11:13:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 11:13:57,534 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 11:13:57,534 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 11:13:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 11:13:57,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 11:13:57,541 INFO L202 PluginConnector]: Adding new model stmt-assume-1.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 11:13:57 BoogieIcfgContainer [2019-08-05 11:13:57,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 11:13:57,543 INFO L168 Benchmark]: Toolchain (without parser) took 1193.97 ms. Allocated memory is still 132.6 MB. Free memory was 110.3 MB in the beginning and 66.0 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:57,544 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 132.6 MB. Free memory was 111.5 MB in the beginning and 111.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 11:13:57,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.16 ms. Allocated memory is still 132.6 MB. Free memory was 110.3 MB in the beginning and 108.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:57,547 INFO L168 Benchmark]: Boogie Preprocessor took 18.89 ms. Allocated memory is still 132.6 MB. Free memory was 108.6 MB in the beginning and 107.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:57,548 INFO L168 Benchmark]: RCFGBuilder took 371.48 ms. Allocated memory is still 132.6 MB. Free memory was 107.5 MB in the beginning and 97.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:57,549 INFO L168 Benchmark]: TraceAbstraction took 766.20 ms. Allocated memory is still 132.6 MB. Free memory was 97.5 MB in the beginning and 66.0 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2019-08-05 11:13:57,553 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 0.16 ms. Allocated memory is still 132.6 MB. Free memory was 111.5 MB in the beginning and 111.3 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 33.16 ms. Allocated memory is still 132.6 MB. Free memory was 110.3 MB in the beginning and 108.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.89 ms. Allocated memory is still 132.6 MB. Free memory was 108.6 MB in the beginning and 107.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 371.48 ms. Allocated memory is still 132.6 MB. Free memory was 107.5 MB in the beginning and 97.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 766.20 ms. Allocated memory is still 132.6 MB. Free memory was 97.5 MB in the beginning and 66.0 MB in the end (delta: 31.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - PositiveResult [Line: 9]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 14]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 4 error locations. SAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...