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.4.2.ufo.UNBOUNDED.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:21:06,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:21:06,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:21:06,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:21:06,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:21:06,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:21:06,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:21:06,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:21:06,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:21:06,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:21:06,555 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:21:06,555 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:21:06,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:21:06,557 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:21:06,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:21:06,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:21:06,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:21:06,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:21:06,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:21:06,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:21:06,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:21:06,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:21:06,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:21:06,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:21:06,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:21:06,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:21:06,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:21:06,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:21:06,574 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:21:06,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:21:06,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:21:06,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:21:06,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:21:06,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:21:06,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:21:06,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:21:06,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:21:06,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:21:06,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:21:06,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:21:06,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:21:06,616 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:21:06,635 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:21:06,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:21:06,640 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:21:06,641 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:21:06,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl [2019-08-05 10:21:06,643 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl' [2019-08-05 10:21:06,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:21:06,702 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:21:06,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:21:06,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:21:06,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:21:06,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:21:06,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:21:06,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:21:06,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:21:06,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/1) ... [2019-08-05 10:21:06,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:21:06,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:21:06,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:21:06,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:21:06,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (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 10:21:06,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:21:06,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:21:07,822 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:21:07,823 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:21:07,824 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:21:07 BoogieIcfgContainer [2019-08-05 10:21:07,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:21:07,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:21:07,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:21:07,830 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:21:07,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:21:06" (1/2) ... [2019-08-05 10:21:07,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3869749e and model type pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:21:07, skipping insertion in model container [2019-08-05 10:21:07,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:21:07" (2/2) ... [2019-08-05 10:21:07,835 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl [2019-08-05 10:21:07,845 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:21:07,853 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:21:07,889 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:21:07,916 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:21:07,917 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:21:07,917 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:21:07,917 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:21:07,917 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:21:07,918 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:21:07,918 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:21:07,918 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:21:07,918 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:21:07,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:21:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:21:07,942 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:21:07,943 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:21:07,945 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:21:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:21:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash 990345, now seen corresponding path program 1 times [2019-08-05 10:21:08,023 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:21:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:21:08,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2019-08-05 10:21:08,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:21:08,318 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:08,370 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 10:21:08,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:21:08,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:21:08,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:21:08,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:21:08,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:21:08,388 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:21:08,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:21:08,479 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:21:08,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:21:08,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:21:08,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:21:08,492 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:21:08,492 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:21:08,494 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:21:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:21:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:21:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:21:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:21:08,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:21:08,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:21:08,524 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:21:08,524 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:21:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:21:08,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:21:08,524 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:21:08,525 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:21:08,525 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:21:08,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:21:08,526 INFO L82 PathProgramCache]: Analyzing trace with hash 951799901, now seen corresponding path program 1 times [2019-08-05 10:21:08,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:21:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:21:08,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2019-08-05 10:21:08,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:21:08,735 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:09,000 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 12 [2019-08-05 10:21:09,018 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:21:09,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:21:09,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:21:09,052 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:21:09,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:21:09,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:21:09,053 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:21:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:21:09,178 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:21:09,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:21:09,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:21:09,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:21:09,179 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:21:09,179 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:21:09,180 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 [2019-08-05 10:21:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:21:09,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-05 10:21:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:21:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:21:09,183 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:21:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:21:09,183 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:21:09,183 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:21:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:21:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:21:09,184 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:21:09,184 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:21:09,184 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:21:09,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:21:09,185 INFO L82 PathProgramCache]: Analyzing trace with hash -148250831, now seen corresponding path program 2 times [2019-08-05 10:21:09,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:21:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:21:09,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 16 conjunts are in the unsatisfiable core [2019-08-05 10:21:09,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:21:09,409 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:09,630 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:21:09,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:21:09,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:21:09,683 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:21:09,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:21:09,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:21:09,684 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-08-05 10:21:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:21:09,846 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-08-05 10:21:09,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:21:09,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-08-05 10:21:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:21:09,849 INFO L225 Difference]: With dead ends: 12 [2019-08-05 10:21:09,849 INFO L226 Difference]: Without dead ends: 12 [2019-08-05 10:21:09,850 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 [2019-08-05 10:21:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-05 10:21:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-08-05 10:21:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:21:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:21:09,853 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-08-05 10:21:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:21:09,853 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:21:09,853 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:21:09,853 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:21:09,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:21:09,854 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:21:09,854 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2019-08-05 10:21:09,855 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:21:09,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:21:09,855 INFO L82 PathProgramCache]: Analyzing trace with hash -735049467, now seen corresponding path program 3 times [2019-08-05 10:21:09,857 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:21:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:21:09,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 10:21:09,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:21:10,064 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:10,074 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:21:10,400 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-08-05 10:21:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-08-05 10:21:10,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:21:10,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:21:10,420 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:21:10,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:21:10,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:21:10,421 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-08-05 10:21:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:21:10,471 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 10:21:10,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:21:10,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-05 10:21:10,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:21:10,472 INFO L225 Difference]: With dead ends: 4 [2019-08-05 10:21:10,472 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:21:10,472 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:21:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:21:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:21:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:21:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:21:10,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-08-05 10:21:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:21:10,473 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:21:10,473 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:21:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:21:10,474 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:21:10,478 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:21:10 BoogieIcfgContainer [2019-08-05 10:21:10,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:21:10,481 INFO L168 Benchmark]: Toolchain (without parser) took 3778.85 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 110.3 MB in the beginning and 174.2 MB in the end (delta: -63.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:21:10,482 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 112.3 MB in the beginning and 112.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-08-05 10:21:10,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 141.6 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. [2019-08-05 10:21:10,484 INFO L168 Benchmark]: Boogie Preprocessor took 33.33 ms. Allocated memory is still 141.6 MB. Free memory was 108.4 MB in the beginning and 107.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-08-05 10:21:10,485 INFO L168 Benchmark]: RCFGBuilder took 1046.91 ms. Allocated memory is still 141.6 MB. Free memory was 106.8 MB in the beginning and 64.8 MB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:21:10,486 INFO L168 Benchmark]: TraceAbstraction took 2652.43 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 64.6 MB in the beginning and 174.2 MB in the end (delta: -109.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:21:10,490 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 141.6 MB. Free memory was 112.3 MB in the beginning and 112.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.15 ms. Allocated memory is still 141.6 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 33.33 ms. Allocated memory is still 141.6 MB. Free memory was 108.4 MB in the beginning and 107.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1046.91 ms. Allocated memory is still 141.6 MB. Free memory was 106.8 MB in the beginning and 64.8 MB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2652.43 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 64.6 MB in the beginning and 174.2 MB in the end (delta: -109.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 384]: 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, 2.5s 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, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 4 QuantifiedInterpolants, 1921 SizeOfPredicates, 60 NumberOfNonLiveVariables, 686 ConjunctsInSsa, 55 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...