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/real-life/PricedTimedAutomata/u2b01_single_pca_SAFE.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:13:16,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:13:16,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:13:16,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:13:16,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:13:16,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:13:16,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:13:16,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:13:16,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:13:16,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:13:16,078 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:13:16,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:13:16,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:13:16,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:13:16,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:13:16,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:13:16,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:13:16,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:13:16,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:13:16,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:13:16,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:13:16,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:13:16,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:13:16,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:13:16,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:13:16,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:13:16,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:13:16,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:13:16,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:13:16,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:13:16,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:13:16,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:13:16,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:13:16,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:13:16,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:13:16,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:13:16,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:13:16,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:13:16,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:13:16,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:13:16,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:13:16,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:13:16,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:13:16,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:13:16,174 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:13:16,174 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:13:16,175 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/PricedTimedAutomata/u2b01_single_pca_SAFE.bpl [2019-08-05 10:13:16,175 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/PricedTimedAutomata/u2b01_single_pca_SAFE.bpl' [2019-08-05 10:13:16,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:13:16,220 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:13:16,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:13:16,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:13:16,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:13:16,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,253 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:13:16,254 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:13:16,254 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:13:16,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:13:16,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:13:16,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:13:16,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:13:16,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/1) ... [2019-08-05 10:13:16,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:13:16,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:13:16,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:13:16,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:13:16,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (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 10:13:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure perform_resets [2019-08-05 10:13:16,370 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset_time [2019-08-05 10:13:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset_x [2019-08-05 10:13:16,371 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 10:13:16,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 10:13:16,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 10:13:16,475 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 10:13:16,943 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:13:16,944 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:13:16,945 INFO L202 PluginConnector]: Adding new model u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:13:16 BoogieIcfgContainer [2019-08-05 10:13:16,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:13:16,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:13:16,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:13:16,950 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:13:16,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:13:16" (1/2) ... [2019-08-05 10:13:16,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7a355f and model type u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:13:16, skipping insertion in model container [2019-08-05 10:13:16,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:13:16" (2/2) ... [2019-08-05 10:13:16,953 INFO L109 eAbstractionObserver]: Analyzing ICFG u2b01_single_pca_SAFE.bpl [2019-08-05 10:13:16,962 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:13:16,970 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-08-05 10:13:16,984 INFO L252 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-08-05 10:13:17,005 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:13:17,006 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:13:17,006 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:13:17,007 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:13:17,007 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:13:17,007 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:13:17,007 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:13:17,007 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:13:17,007 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:13:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-08-05 10:13:17,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-08-05 10:13:17,027 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:17,028 INFO L399 BasicCegarLoop]: trace histogram [1, 1] [2019-08-05 10:13:17,030 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:13:17,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:17,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2762, now seen corresponding path program 1 times [2019-08-05 10:13:17,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:17,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:13:17,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:17,157 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 10:13:17,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:13:17,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-08-05 10:13:17,166 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:13:17,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:13:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:13:17,184 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-08-05 10:13:17,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:17,230 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2019-08-05 10:13:17,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:13:17,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-08-05 10:13:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:17,243 INFO L225 Difference]: With dead ends: 13 [2019-08-05 10:13:17,244 INFO L226 Difference]: Without dead ends: 11 [2019-08-05 10:13:17,246 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 10:13:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-08-05 10:13:17,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-08-05 10:13:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:13:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-08-05 10:13:17,279 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 2 [2019-08-05 10:13:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:17,279 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-08-05 10:13:17,280 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:13:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2019-08-05 10:13:17,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:13:17,281 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:17,281 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:13:17,281 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:13:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:17,282 INFO L82 PathProgramCache]: Analyzing trace with hash 2714449, now seen corresponding path program 1 times [2019-08-05 10:13:17,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:17,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-08-05 10:13:17,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:17,363 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 10:13:17,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:13:17,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:13:17,365 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:13:17,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:13:17,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:13:17,366 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand 3 states. [2019-08-05 10:13:17,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:17,440 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-08-05 10:13:17,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:13:17,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-08-05 10:13:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:17,442 INFO L225 Difference]: With dead ends: 19 [2019-08-05 10:13:17,442 INFO L226 Difference]: Without dead ends: 19 [2019-08-05 10:13:17,443 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:13:17,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-08-05 10:13:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2019-08-05 10:13:17,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-08-05 10:13:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2019-08-05 10:13:17,448 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 4 [2019-08-05 10:13:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:17,448 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-08-05 10:13:17,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:13:17,448 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2019-08-05 10:13:17,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:13:17,449 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:17,449 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-08-05 10:13:17,449 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:13:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:17,450 INFO L82 PathProgramCache]: Analyzing trace with hash 84149744, now seen corresponding path program 1 times [2019-08-05 10:13:17,452 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:17,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 7 conjunts are in the unsatisfiable core [2019-08-05 10:13:17,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:17,530 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:13:17,636 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 10:13:17,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:13:17,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:13:17,637 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:13:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:13:17,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:13:17,638 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2019-08-05 10:13:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:17,826 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-08-05 10:13:17,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:13:17,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-08-05 10:13:17,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:17,827 INFO L225 Difference]: With dead ends: 22 [2019-08-05 10:13:17,828 INFO L226 Difference]: Without dead ends: 22 [2019-08-05 10:13:17,828 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:13:17,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-08-05 10:13:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-08-05 10:13:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-08-05 10:13:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-08-05 10:13:17,832 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 5 [2019-08-05 10:13:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:17,833 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-08-05 10:13:17,833 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:13:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-08-05 10:13:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:13:17,834 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:17,834 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-08-05 10:13:17,834 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:13:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1563109312, now seen corresponding path program 1 times [2019-08-05 10:13:17,836 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:17,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 10:13:17,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:17,942 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:13:18,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:13:18,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:13:18,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:13:18,105 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 10:13:18,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 10:13:18,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:13:18,107 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 7 states. [2019-08-05 10:13:18,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:18,448 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2019-08-05 10:13:18,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-08-05 10:13:18,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-08-05 10:13:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:18,450 INFO L225 Difference]: With dead ends: 34 [2019-08-05 10:13:18,450 INFO L226 Difference]: Without dead ends: 34 [2019-08-05 10:13:18,451 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-08-05 10:13:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-08-05 10:13:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2019-08-05 10:13:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-08-05 10:13:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-08-05 10:13:18,456 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 10 [2019-08-05 10:13:18,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:18,457 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-08-05 10:13:18,457 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 10:13:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-08-05 10:13:18,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-08-05 10:13:18,458 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:13:18,458 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-08-05 10:13:18,460 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONASSERT, mainErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:13:18,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:13:18,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2023343670, now seen corresponding path program 1 times [2019-08-05 10:13:18,462 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:13:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:13:18,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2019-08-05 10:13:18,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:13:18,554 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:13:18,713 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:13:18,772 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-08-05 10:13:18,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:13:18,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:13:18,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-08-05 10:13:18,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-08-05 10:13:18,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:13:18,774 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 7 states. [2019-08-05 10:13:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:13:19,226 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-08-05 10:13:19,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-08-05 10:13:19,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-08-05 10:13:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:13:19,227 INFO L225 Difference]: With dead ends: 32 [2019-08-05 10:13:19,227 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:13:19,228 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:13:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:13:19,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:13:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:13:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:13:19,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-08-05 10:13:19,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:13:19,229 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:13:19,229 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-08-05 10:13:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:13:19,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:13:19,234 INFO L202 PluginConnector]: Adding new model u2b01_single_pca_SAFE.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:13:19 BoogieIcfgContainer [2019-08-05 10:13:19,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:13:19,237 INFO L168 Benchmark]: Toolchain (without parser) took 3016.28 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 110.5 MB in the beginning and 92.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:19,238 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:13:19,239 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.83 ms. Allocated memory is still 133.2 MB. Free memory was 110.3 MB in the beginning and 108.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:19,240 INFO L168 Benchmark]: Boogie Preprocessor took 42.15 ms. Allocated memory is still 133.2 MB. Free memory was 108.7 MB in the beginning and 107.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:19,241 INFO L168 Benchmark]: RCFGBuilder took 646.11 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 90.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:19,242 INFO L168 Benchmark]: TraceAbstraction took 2287.90 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 90.2 MB in the beginning and 92.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:13:19,249 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 0.22 ms. Allocated memory is still 133.2 MB. Free memory was 112.0 MB in the beginning and 111.8 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 35.83 ms. Allocated memory is still 133.2 MB. Free memory was 110.3 MB in the beginning and 108.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.15 ms. Allocated memory is still 133.2 MB. Free memory was 108.7 MB in the beginning and 107.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 646.11 ms. Allocated memory is still 133.2 MB. Free memory was 107.3 MB in the beginning and 90.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2287.90 ms. Allocated memory was 133.2 MB in the beginning and 171.4 MB in the end (delta: 38.3 MB). Free memory was 90.2 MB in the beginning and 92.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 113]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 82]: 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, 12 locations, 2 error locations. SAFE Result, 2.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 31 SDslu, 54 SDs, 0 SdLazy, 146 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, 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, 5 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 3153 SizeOfPredicates, 15 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...