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/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:37:28,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:37:28,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:37:28,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:37:28,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:37:28,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:37:28,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:37:28,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:37:28,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:37:28,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:37:28,224 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:37:28,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:37:28,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:37:28,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:37:28,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:37:28,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:37:28,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:37:28,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:37:28,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:37:28,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:37:28,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:37:28,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:37:28,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:37:28,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:37:28,242 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-04 21:37:28,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-04 21:37:28,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-04 21:37:28,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-04 21:37:28,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-04 21:37:28,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-04 21:37:28,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:37:28,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:37:28,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:37:28,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:37:28,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:37:28,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:37:28,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:37:28,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:37:28,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:37:28,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:37:28,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:37:28,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:37:28,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:37:28,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:37:28,312 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:37:28,312 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:37:28,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl [2019-08-04 21:37:28,314 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl' [2019-08-04 21:37:28,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:37:28,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:37:28,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:37:28,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:37:28,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:37:28,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:37:28,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:37:28,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:37:28,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:37:28,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/1) ... [2019-08-04 21:37:28,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:37:28,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:37:28,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:37:28,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:37:28,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (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 [2019-08-04 21:37:28,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-04 21:37:28,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-04 21:37:29,751 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-04 21:37:29,752 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-04 21:37:29,753 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:37:29 BoogieIcfgContainer [2019-08-04 21:37:29,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:37:29,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-04 21:37:29,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-04 21:37:29,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-04 21:37:29,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:28" (1/2) ... [2019-08-04 21:37:29,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3716c and model type pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:37:29, skipping insertion in model container [2019-08-04 21:37:29,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:37:29" (2/2) ... [2019-08-04 21:37:29,766 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl [2019-08-04 21:37:29,779 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-04 21:37:29,790 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-04 21:37:29,809 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-04 21:37:29,843 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-04 21:37:29,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-04 21:37:29,845 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-04 21:37:29,845 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-04 21:37:29,845 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-04 21:37:29,845 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-04 21:37:29,845 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-04 21:37:29,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-04 21:37:29,846 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-04 21:37:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-04 21:37:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-04 21:37:29,883 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:29,885 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-04 21:37:29,888 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:29,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1001172, now seen corresponding path program 1 times [2019-08-04 21:37:29,974 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:30,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-04 21:37:30,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:30,307 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:37:30,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-04 21:37:30,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-04 21:37:30,423 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:37:30,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:37:30,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:30,442 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-04 21:37:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:30,537 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-04 21:37:30,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:37:30,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-04 21:37:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:30,550 INFO L225 Difference]: With dead ends: 8 [2019-08-04 21:37:30,550 INFO L226 Difference]: Without dead ends: 8 [2019-08-04 21:37:30,552 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-04 21:37:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-04 21:37:30,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-04 21:37:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-04 21:37:30,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-04 21:37:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:30,587 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-04 21:37:30,587 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:37:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-04 21:37:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-04 21:37:30,588 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:30,588 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-04 21:37:30,589 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash 962207787, now seen corresponding path program 1 times [2019-08-04 21:37:30,592 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:30,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 14 conjunts are in the unsatisfiable core [2019-08-04 21:37:30,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:30,879 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:31,043 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:37:31,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:37:31,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-04 21:37:31,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-04 21:37:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-04 21:37:31,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:37:31,109 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-04 21:37:31,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:31,312 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-04 21:37:31,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-04 21:37:31,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-04 21:37:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:31,314 INFO L225 Difference]: With dead ends: 10 [2019-08-04 21:37:31,314 INFO L226 Difference]: Without dead ends: 10 [2019-08-04 21:37:31,315 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-04 21:37:31,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-04 21:37:31,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-04 21:37:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-04 21:37:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-04 21:37:31,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-04 21:37:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:31,318 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-04 21:37:31,318 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-04 21:37:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-04 21:37:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-04 21:37:31,319 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:31,319 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-04 21:37:31,320 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1263796162, now seen corresponding path program 2 times [2019-08-04 21:37:31,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:31,496 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2019-08-04 21:37:31,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:31,602 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:31,703 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:37:31,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:37:31,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-04 21:37:31,845 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-04 21:37:31,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-04 21:37:31,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-04 21:37:31,846 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-08-04 21:37:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:31,978 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-08-04 21:37:31,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-04 21:37:31,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-08-04 21:37:31,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:31,980 INFO L225 Difference]: With dead ends: 12 [2019-08-04 21:37:31,981 INFO L226 Difference]: Without dead ends: 12 [2019-08-04 21:37:31,982 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-08-04 21:37:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-04 21:37:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-08-04 21:37:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-04 21:37:31,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-04 21:37:31,984 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-08-04 21:37:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:31,985 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-04 21:37:31,985 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-04 21:37:31,985 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-04 21:37:31,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-04 21:37:31,986 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:31,986 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2019-08-04 21:37:31,986 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:31,987 INFO L82 PathProgramCache]: Analyzing trace with hash -967551591, now seen corresponding path program 3 times [2019-08-04 21:37:31,989 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:32,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-04 21:37:32,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:32,244 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-08-04 21:37:32,248 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:32,266 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:32,439 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-08-04 21:37:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-08-04 21:37:32,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:37:32,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-04 21:37:32,475 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:37:32,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:37:32,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:32,475 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-08-04 21:37:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:32,495 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-04 21:37:32,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:37:32,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-04 21:37:32,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:32,497 INFO L225 Difference]: With dead ends: 4 [2019-08-04 21:37:32,497 INFO L226 Difference]: Without dead ends: 0 [2019-08-04 21:37:32,498 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-04 21:37:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-04 21:37:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-04 21:37:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-04 21:37:32,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-08-04 21:37:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:32,500 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-04 21:37:32,500 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:37:32,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-04 21:37:32,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-04 21:37:32,506 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:37:32 BoogieIcfgContainer [2019-08-04 21:37:32,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-04 21:37:32,509 INFO L168 Benchmark]: Toolchain (without parser) took 4117.47 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 110.2 MB in the beginning and 161.0 MB in the end (delta: -50.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:32,510 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 112.5 MB in the beginning and 112.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-08-04 21:37:32,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.64 ms. Allocated memory is still 133.7 MB. Free memory was 110.0 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:32,512 INFO L168 Benchmark]: Boogie Preprocessor took 64.50 ms. Allocated memory is still 133.7 MB. Free memory was 108.4 MB in the beginning and 106.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:32,513 INFO L168 Benchmark]: RCFGBuilder took 1242.96 ms. Allocated memory was 133.7 MB in the beginning and 170.9 MB in the end (delta: 37.2 MB). Free memory was 106.8 MB in the beginning and 145.6 MB in the end (delta: -38.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:32,514 INFO L168 Benchmark]: TraceAbstraction took 2750.18 ms. Allocated memory was 170.9 MB in the beginning and 196.6 MB in the end (delta: 25.7 MB). Free memory was 144.9 MB in the beginning and 161.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:32,519 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 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 112.5 MB in the beginning and 112.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.64 ms. Allocated memory is still 133.7 MB. Free memory was 110.0 MB in the beginning and 108.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.50 ms. Allocated memory is still 133.7 MB. Free memory was 108.4 MB in the beginning and 106.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1242.96 ms. Allocated memory was 133.7 MB in the beginning and 170.9 MB in the end (delta: 37.2 MB). Free memory was 106.8 MB in the beginning and 145.6 MB in the end (delta: -38.8 MB). Peak memory consumption was 52.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2750.18 ms. Allocated memory was 170.9 MB in the beginning and 196.6 MB in the end (delta: 25.7 MB). Free memory was 144.9 MB in the beginning and 161.0 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 467]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 19 SDs, 0 SdLazy, 44 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 2 QuantifiedInterpolants, 1719 SizeOfPredicates, 67 NumberOfNonLiveVariables, 850 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 11/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...