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.6.1.ufo.UNBOUNDED.pals.c_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:37:35,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:37:35,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:37:35,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:37:35,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:37:35,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:37:35,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:37:35,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:37:35,093 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:37:35,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:37:35,095 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:37:35,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:37:35,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:37:35,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:37:35,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:37:35,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:37:35,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:37:35,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:37:35,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:37:35,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:37:35,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:37:35,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:37:35,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:37:35,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:37:35,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-04 21:37:35,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:37:35,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:37:35,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:37:35,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:37:35,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:37:35,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:37:35,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:37:35,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:37:35,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:37:35,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:37:35,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:37:35,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:37:35,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:37:35,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:37:35,188 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:37:35,189 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:37:35,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl [2019-08-04 21:37:35,190 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl' [2019-08-04 21:37:35,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:37:35,267 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:37:35,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:37:35,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:37:35,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:37:35,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:37:35,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:37:35,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:37:35,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:37:35,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/1) ... [2019-08-04 21:37:35,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:37:35,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:37:35,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:37:35,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:37:35,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (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 21:37:35,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-04 21:37:35,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-04 21:37:36,921 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-04 21:37:36,921 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-04 21:37:36,923 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:37:36 BoogieIcfgContainer [2019-08-04 21:37:36,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:37:36,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-04 21:37:36,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-04 21:37:36,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-04 21:37:36,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:37:35" (1/2) ... [2019-08-04 21:37:36,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d204b4e and model type pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:37:36, skipping insertion in model container [2019-08-04 21:37:36,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:37:36" (2/2) ... [2019-08-04 21:37:36,933 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl [2019-08-04 21:37:36,945 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-04 21:37:36,955 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-04 21:37:36,976 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-04 21:37:37,009 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-04 21:37:37,010 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-04 21:37:37,010 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-04 21:37:37,010 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-04 21:37:37,010 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-04 21:37:37,011 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-04 21:37:37,011 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-04 21:37:37,011 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-04 21:37:37,012 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-04 21:37:37,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-04 21:37:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-04 21:37:37,041 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:37,043 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-04 21:37:37,049 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:37,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:37,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1011999, now seen corresponding path program 1 times [2019-08-04 21:37:37,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:37,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 13 conjunts are in the unsatisfiable core [2019-08-04 21:37:37,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:37,461 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:37,581 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 21:37:37,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-04 21:37:37,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-04 21:37:37,590 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:37:37,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:37:37,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:37,615 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-04 21:37:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:37,743 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-04 21:37:37,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:37:37,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-04 21:37:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:37,755 INFO L225 Difference]: With dead ends: 8 [2019-08-04 21:37:37,755 INFO L226 Difference]: Without dead ends: 8 [2019-08-04 21:37:37,757 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 21:37:37,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-04 21:37:37,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-04 21:37:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-04 21:37:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-04 21:37:37,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-04 21:37:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:37,792 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-04 21:37:37,792 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:37:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-04 21:37:37,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-04 21:37:37,793 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:37,793 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-04 21:37:37,794 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:37,795 INFO L82 PathProgramCache]: Analyzing trace with hash 972615673, now seen corresponding path program 1 times [2019-08-04 21:37:37,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:37,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2019-08-04 21:37:37,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:38,012 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:38,217 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 15 [2019-08-04 21:37:38,222 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:38,290 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 21:37:38,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:37:38,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-04 21:37:38,292 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-04 21:37:38,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-04 21:37:38,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:37:38,293 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-04 21:37:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:38,436 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-04 21:37:38,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-04 21:37:38,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-04 21:37:38,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:38,442 INFO L225 Difference]: With dead ends: 10 [2019-08-04 21:37:38,442 INFO L226 Difference]: Without dead ends: 10 [2019-08-04 21:37:38,443 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 21:37:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-04 21:37:38,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-04 21:37:38,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-04 21:37:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-04 21:37:38,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-04 21:37:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:38,446 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-04 21:37:38,446 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-04 21:37:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-04 21:37:38,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-04 21:37:38,447 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:37:38,447 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-04 21:37:38,448 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:37:38,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:37:38,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1619124141, now seen corresponding path program 2 times [2019-08-04 21:37:38,450 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:37:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:37:38,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-04 21:37:38,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:37:38,688 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:38,703 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:37:39,190 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-08-04 21:37:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-08-04 21:37:39,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:37:39,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-04 21:37:39,210 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:37:39,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:37:39,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:39,211 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2019-08-04 21:37:39,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:37:39,265 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-04 21:37:39,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:37:39,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-08-04 21:37:39,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:37:39,267 INFO L225 Difference]: With dead ends: 4 [2019-08-04 21:37:39,267 INFO L226 Difference]: Without dead ends: 0 [2019-08-04 21:37:39,267 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:37:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-04 21:37:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-04 21:37:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-04 21:37:39,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-04 21:37:39,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-08-04 21:37:39,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:37:39,269 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-04 21:37:39,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:37:39,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-04 21:37:39,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-04 21:37:39,275 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.6.1.ufo.UNBOUNDED.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:37:39 BoogieIcfgContainer [2019-08-04 21:37:39,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-04 21:37:39,278 INFO L168 Benchmark]: Toolchain (without parser) took 4009.57 ms. Allocated memory was 136.8 MB in the beginning and 172.0 MB in the end (delta: 35.1 MB). Free memory was 109.7 MB in the beginning and 57.6 MB in the end (delta: 52.1 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:39,279 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory is still 111.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-04 21:37:39,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.26 ms. Allocated memory is still 136.8 MB. Free memory was 109.7 MB in the beginning and 108.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:39,282 INFO L168 Benchmark]: Boogie Preprocessor took 64.80 ms. Allocated memory is still 136.8 MB. Free memory was 108.0 MB in the beginning and 106.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:39,283 INFO L168 Benchmark]: RCFGBuilder took 1545.63 ms. Allocated memory was 136.8 MB in the beginning and 172.0 MB in the end (delta: 35.1 MB). Free memory was 106.3 MB in the beginning and 137.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:39,284 INFO L168 Benchmark]: TraceAbstraction took 2349.90 ms. Allocated memory is still 172.0 MB. Free memory was 137.5 MB in the beginning and 57.6 MB in the end (delta: 79.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. [2019-08-04 21:37:39,290 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 136.8 MB. Free memory is still 111.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.26 ms. Allocated memory is still 136.8 MB. Free memory was 109.7 MB in the beginning and 108.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.80 ms. Allocated memory is still 136.8 MB. Free memory was 108.0 MB in the beginning and 106.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1545.63 ms. Allocated memory was 136.8 MB in the beginning and 172.0 MB in the end (delta: 35.1 MB). Free memory was 106.3 MB in the beginning and 137.5 MB in the end (delta: -31.2 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2349.90 ms. Allocated memory is still 172.0 MB. Free memory was 137.5 MB in the beginning and 57.6 MB in the end (delta: 79.9 MB). Peak memory consumption was 79.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 541]: 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, 2.2s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 23 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 2 QuantifiedInterpolants, 1018 SizeOfPredicates, 51 NumberOfNonLiveVariables, 657 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...