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.5.2.ufo.BOUNDED-10.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:15:03,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:15:03,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:15:03,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:15:03,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:15:03,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:15:03,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:15:03,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:15:03,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:15:03,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:15:03,556 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:15:03,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:15:03,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:15:03,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:15:03,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:15:03,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:15:03,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:15:03,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:15:03,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:15:03,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:15:03,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:15:03,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:15:03,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:15:03,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:15:03,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 10:15:03,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 10:15:03,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 10:15:03,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 10:15:03,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 10:15:03,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 10:15:03,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:15:03,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:15:03,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:15:03,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:15:03,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:15:03,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:15:03,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:15:03,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:15:03,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:15:03,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:15:03,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:15:03,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:15:03,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:15:03,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:15:03,629 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:15:03,629 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:15:03,630 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl [2019-08-05 10:15:03,630 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl' [2019-08-05 10:15:03,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:15:03,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:15:03,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:15:03,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:15:03,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:15:03,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:15:03,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:15:03,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:15:03,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:15:03,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/1) ... [2019-08-05 10:15:03,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:15:03,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:15:03,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:15:03,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:15:03,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (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 10:15:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-05 10:15:03,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-05 10:15:05,149 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-05 10:15:05,149 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 10:15:05,151 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:15:05 BoogieIcfgContainer [2019-08-05 10:15:05,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:15:05,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:15:05,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:15:05,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:15:05,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:15:03" (1/2) ... [2019-08-05 10:15:05,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34ed3eb1 and model type pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:15:05, skipping insertion in model container [2019-08-05 10:15:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:15:05" (2/2) ... [2019-08-05 10:15:05,168 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl [2019-08-05 10:15:05,193 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:15:05,211 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:15:05,228 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:15:05,261 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:15:05,262 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:15:05,262 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:15:05,262 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:15:05,262 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:15:05,262 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:15:05,263 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:15:05,263 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:15:05,263 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:15:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-05 10:15:05,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:15:05,286 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:15:05,287 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:15:05,289 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:15:05,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:15:05,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1001234, now seen corresponding path program 1 times [2019-08-05 10:15:05,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:15:05,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:15:05,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 12 conjunts are in the unsatisfiable core [2019-08-05 10:15:05,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:15:05,696 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:05,765 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 10:15:05,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:15:05,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-05 10:15:05,770 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:15:05,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:15:05,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:15:05,784 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-05 10:15:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:15:05,880 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:15:05,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:15:05,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:15:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:15:05,891 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:15:05,891 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:15:05,893 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 [2019-08-05 10:15:05,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:15:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-08-05 10:15:05,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:15:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:15:05,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-05 10:15:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:15:05,927 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:15:05,927 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:15:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:15:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:15:05,928 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:15:05,928 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-05 10:15:05,928 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:15:05,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:15:05,929 INFO L82 PathProgramCache]: Analyzing trace with hash 962148267, now seen corresponding path program 1 times [2019-08-05 10:15:05,932 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:15:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:15:06,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 14 conjunts are in the unsatisfiable core [2019-08-05 10:15:06,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:15:06,195 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:06,364 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:06,439 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 10:15:06,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:15:06,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:15:06,443 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:15:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:15:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:15:06,444 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-05 10:15:06,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:15:06,637 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-08-05 10:15:06,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:15:06,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-05 10:15:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:15:06,638 INFO L225 Difference]: With dead ends: 10 [2019-08-05 10:15:06,638 INFO L226 Difference]: Without dead ends: 10 [2019-08-05 10:15:06,639 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 10:15:06,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-08-05 10:15:06,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2019-08-05 10:15:06,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-05 10:15:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-05 10:15:06,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-05 10:15:06,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:15:06,641 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-05 10:15:06,642 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:15:06,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-05 10:15:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-05 10:15:06,642 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:15:06,642 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-05 10:15:06,642 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:15:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:15:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1206478340, now seen corresponding path program 2 times [2019-08-05 10:15:06,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:15:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:15:06,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 15 conjunts are in the unsatisfiable core [2019-08-05 10:15:06,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:15:06,837 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:06,996 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:07,069 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 10:15:07,072 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:15:07,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:15:07,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:15:07,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:15:07,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:15:07,076 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2019-08-05 10:15:07,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:15:07,301 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-08-05 10:15:07,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:15:07,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-08-05 10:15:07,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:15:07,303 INFO L225 Difference]: With dead ends: 12 [2019-08-05 10:15:07,303 INFO L226 Difference]: Without dead ends: 12 [2019-08-05 10:15:07,304 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:15:07,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-08-05 10:15:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2019-08-05 10:15:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-08-05 10:15:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-08-05 10:15:07,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2019-08-05 10:15:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:15:07,307 INFO L475 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-08-05 10:15:07,308 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:15:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-08-05 10:15:07,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-08-05 10:15:07,308 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:15:07,309 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2019-08-05 10:15:07,309 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:15:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:15:07,309 INFO L82 PathProgramCache]: Analyzing trace with hash -215522787, now seen corresponding path program 3 times [2019-08-05 10:15:07,311 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:15:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:15:07,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2019-08-05 10:15:07,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:15:07,556 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-08-05 10:15:07,560 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:07,574 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:15:07,838 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2019-08-05 10:15:07,853 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 10:15:07,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:15:07,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:15:07,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:15:07,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:15:07,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:15:07,854 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-08-05 10:15:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:15:07,880 INFO L93 Difference]: Finished difference Result 4 states and 3 transitions. [2019-08-05 10:15:07,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:15:07,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-08-05 10:15:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:15:07,881 INFO L225 Difference]: With dead ends: 4 [2019-08-05 10:15:07,881 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:15:07,882 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:15:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:15:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:15:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:15:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:15:07,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-08-05 10:15:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:15:07,902 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:15:07,903 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:15:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:15:07,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:15:07,908 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:15:07 BoogieIcfgContainer [2019-08-05 10:15:07,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:15:07,910 INFO L168 Benchmark]: Toolchain (without parser) took 4215.10 ms. Allocated memory was 133.2 MB in the beginning and 196.1 MB in the end (delta: 62.9 MB). Free memory was 106.6 MB in the beginning and 171.9 MB in the end (delta: -65.3 MB). Peak memory consumption was 100.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:15:07,911 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.2 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-08-05 10:15:07,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.18 ms. Allocated memory is still 133.2 MB. Free memory was 106.4 MB in the beginning and 104.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:15:07,916 INFO L168 Benchmark]: Boogie Preprocessor took 66.88 ms. Allocated memory is still 133.2 MB. Free memory was 104.7 MB in the beginning and 103.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-08-05 10:15:07,919 INFO L168 Benchmark]: RCFGBuilder took 1345.19 ms. Allocated memory was 133.2 MB in the beginning and 174.1 MB in the end (delta: 40.9 MB). Free memory was 103.2 MB in the beginning and 150.4 MB in the end (delta: -47.3 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2019-08-05 10:15:07,920 INFO L168 Benchmark]: TraceAbstraction took 2752.93 ms. Allocated memory was 174.1 MB in the beginning and 196.1 MB in the end (delta: 22.0 MB). Free memory was 150.4 MB in the beginning and 171.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 102.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:15:07,925 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 133.2 MB. Free memory was 108.9 MB in the beginning and 108.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.18 ms. Allocated memory is still 133.2 MB. Free memory was 106.4 MB in the beginning and 104.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.88 ms. Allocated memory is still 133.2 MB. Free memory was 104.7 MB in the beginning and 103.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1345.19 ms. Allocated memory was 133.2 MB in the beginning and 174.1 MB in the end (delta: 40.9 MB). Free memory was 103.2 MB in the beginning and 150.4 MB in the end (delta: -47.3 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2752.93 ms. Allocated memory was 174.1 MB in the beginning and 196.1 MB in the end (delta: 22.0 MB). Free memory was 150.4 MB in the beginning and 171.9 MB in the end (delta: -21.5 MB). Peak memory consumption was 102.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 465]: 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, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 19 SDs, 0 SdLazy, 44 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s 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, 1605 SizeOfPredicates, 61 NumberOfNonLiveVariables, 850 ConjunctsInSsa, 52 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...