java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:19:20,423 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:19:20,425 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:19:20,437 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:19:20,438 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:19:20,439 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:19:20,440 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:19:20,444 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:19:20,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:19:20,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:19:20,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 08:19:20,502 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-09-26 08:19:20,519 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:19:20,519 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:19:20,521 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 08:19:20,521 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 08:19:20,522 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:19:20,522 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-09-26 08:19:20,523 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 08:19:20,523 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:19:20,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:19:20,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:19:20,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:19:20,641 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:19:20,642 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:19:20,643 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl [2018-09-26 08:19:20,643 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl' [2018-09-26 08:19:20,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:19:20,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:19:20,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:19:20,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:19:20,732 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:19:20,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:19:20,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:19:20,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:19:20,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:19:20,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:19:20,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:19:20,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:19:20,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:19:20,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/1) ... [2018-09-26 08:19:20,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 08:19:20,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 08:19:21,894 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 08:19:21,895 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:19:21 BoogieIcfgContainer [2018-09-26 08:19:21,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:19:21,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:19:21,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:19:21,903 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:19:21,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:19:20" (1/2) ... [2018-09-26 08:19:21,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74b15e48 and model type pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:19:21, skipping insertion in model container [2018-09-26 08:19:21,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:19:21" (2/2) ... [2018-09-26 08:19:21,908 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl [2018-09-26 08:19:21,919 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:19:21,933 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:19:21,981 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:19:21,982 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:19:21,982 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:19:21,982 INFO L383 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-09-26 08:19:21,982 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:19:21,983 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:19:21,983 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:19:21,983 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:19:21,983 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:19:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 08:19:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:19:22,008 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:19:22,009 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:19:22,010 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:19:22,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:19:22,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1011999, now seen corresponding path program 1 times [2018-09-26 08:19:22,028 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:19:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:19:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:19:22,234 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:19:22,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 08:19:22,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 08:19:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 08:19:22,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:19:22,261 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-09-26 08:19:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:19:22,362 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-09-26 08:19:22,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 08:19:22,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-26 08:19:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:19:22,391 INFO L225 Difference]: With dead ends: 11 [2018-09-26 08:19:22,391 INFO L226 Difference]: Without dead ends: 8 [2018-09-26 08:19:22,396 INFO L605 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 [2018-09-26 08:19:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-26 08:19:22,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-09-26 08:19:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 08:19:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 08:19:22,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 08:19:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:19:22,438 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 08:19:22,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 08:19:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 08:19:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 08:19:22,439 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:19:22,439 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 08:19:22,440 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:19:22,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:19:22,441 INFO L82 PathProgramCache]: Analyzing trace with hash 972615673, now seen corresponding path program 1 times [2018-09-26 08:19:22,441 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:19:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:19:22,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:19:22,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:19:22,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-09-26 08:19:22,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 08:19:22,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 08:19:22,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:19:22,595 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-09-26 08:19:22,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:19:22,673 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-09-26 08:19:22,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 08:19:22,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-09-26 08:19:22,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:19:22,679 INFO L225 Difference]: With dead ends: 12 [2018-09-26 08:19:22,680 INFO L226 Difference]: Without dead ends: 10 [2018-09-26 08:19:22,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:19:22,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-26 08:19:22,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-09-26 08:19:22,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 08:19:22,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-26 08:19:22,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-26 08:19:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:19:22,686 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-26 08:19:22,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 08:19:22,686 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-26 08:19:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 08:19:22,687 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:19:22,687 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-26 08:19:22,688 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:19:22,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:19:22,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1619124141, now seen corresponding path program 2 times [2018-09-26 08:19:22,688 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:19:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:19:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:19:22,873 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:19:22,873 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-09-26 08:19:22,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 08:19:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 08:19:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:19:22,874 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-09-26 08:19:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:19:22,973 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-26 08:19:22,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 08:19:22,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2018-09-26 08:19:22,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:19:22,976 INFO L225 Difference]: With dead ends: 14 [2018-09-26 08:19:22,976 INFO L226 Difference]: Without dead ends: 12 [2018-09-26 08:19:22,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-26 08:19:22,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-26 08:19:22,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-09-26 08:19:22,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-26 08:19:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-26 08:19:22,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-26 08:19:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:19:22,989 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-26 08:19:22,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 08:19:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-26 08:19:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 08:19:22,990 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:19:22,990 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-26 08:19:22,992 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:19:22,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:19:22,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1200053715, now seen corresponding path program 3 times [2018-09-26 08:19:22,993 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:19:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:19:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:19:23,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:19:23,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-09-26 08:19:23,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 08:19:23,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 08:19:23,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 08:19:23,197 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-09-26 08:19:23,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:19:23,343 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-09-26 08:19:23,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 08:19:23,344 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-09-26 08:19:23,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:19:23,345 INFO L225 Difference]: With dead ends: 16 [2018-09-26 08:19:23,345 INFO L226 Difference]: Without dead ends: 14 [2018-09-26 08:19:23,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-09-26 08:19:23,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-26 08:19:23,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-09-26 08:19:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-26 08:19:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-26 08:19:23,351 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-26 08:19:23,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:19:23,351 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-26 08:19:23,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 08:19:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-26 08:19:23,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 08:19:23,352 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:19:23,353 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-09-26 08:19:23,353 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:19:23,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:19:23,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2094667143, now seen corresponding path program 4 times [2018-09-26 08:19:23,354 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:19:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:19:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-09-26 08:19:23,517 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:19:23,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-09-26 08:19:23,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 08:19:23,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 08:19:23,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:19:23,519 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-09-26 08:19:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:19:23,549 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-26 08:19:23,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 08:19:23,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-09-26 08:19:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:19:23,550 INFO L225 Difference]: With dead ends: 13 [2018-09-26 08:19:23,551 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 08:19:23,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:19:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 08:19:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 08:19:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 08:19:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 08:19:23,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-09-26 08:19:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:19:23,553 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 08:19:23,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 08:19:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 08:19:23,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 08:19:23,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 08:19:23,599 INFO L422 ceAbstractionStarter]: At program point L543(lines 366 543) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and .cse0 (<= 0 ~send1) (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (= ~mode2 (* 256 (div ~mode2 256))) (<= ~send1 127) (= 0 (+ ~nomsg 1)) .cse1) (and (not (= ~p1_old ~nomsg)) (= ~mode1 1) .cse0 (= ULTIMATE.start_assert_~arg 1) (= ~mode3 1) (= ~mode2 1) .cse1))) [2018-09-26 08:19:23,600 INFO L426 ceAbstractionStarter]: For program point L510(lines 510 517) no Hoare annotation was computed. [2018-09-26 08:19:23,600 INFO L426 ceAbstractionStarter]: For program point L477(lines 477 487) no Hoare annotation was computed. [2018-09-26 08:19:23,600 INFO L422 ceAbstractionStarter]: At program point L531(lines 531 538) the Hoare annotation is: (and (not (= ~p1_old ~nomsg)) (= ~mode1 1) (<= ~r1 0) (= ULTIMATE.start_assert_~arg 1) (= ~mode3 1) (= ~mode2 1) (<= 0 ~r1)) [2018-09-26 08:19:23,601 INFO L426 ceAbstractionStarter]: For program point L432(lines 426 433) no Hoare annotation was computed. [2018-09-26 08:19:23,601 INFO L426 ceAbstractionStarter]: For program point L457(lines 457 466) no Hoare annotation was computed. [2018-09-26 08:19:23,601 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 108 546) the Hoare annotation is: true [2018-09-26 08:19:23,601 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 108 546) no Hoare annotation was computed. [2018-09-26 08:19:23,601 INFO L426 ceAbstractionStarter]: For program point L412(lines 406 413) no Hoare annotation was computed. [2018-09-26 08:19:23,602 INFO L422 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 545) the Hoare annotation is: false [2018-09-26 08:19:23,602 INFO L426 ceAbstractionStarter]: For program point L437(lines 437 447) no Hoare annotation was computed. [2018-09-26 08:19:23,602 INFO L426 ceAbstractionStarter]: For program point L392(lines 383 393) no Hoare annotation was computed. [2018-09-26 08:19:23,602 INFO L426 ceAbstractionStarter]: For program point L417(lines 417 427) no Hoare annotation was computed. [2018-09-26 08:19:23,602 INFO L422 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 108 546) the Hoare annotation is: false [2018-09-26 08:19:23,603 INFO L422 ceAbstractionStarter]: At program point L537(lines 537 544) the Hoare annotation is: false [2018-09-26 08:19:23,603 INFO L426 ceAbstractionStarter]: For program point L397(lines 397 407) no Hoare annotation was computed. [2018-09-26 08:19:23,603 INFO L426 ceAbstractionStarter]: For program point L492(lines 486 493) no Hoare annotation was computed. [2018-09-26 08:19:23,603 INFO L426 ceAbstractionStarter]: For program point L521(lines 516 522) no Hoare annotation was computed. [2018-09-26 08:19:23,603 INFO L426 ceAbstractionStarter]: For program point L472(lines 465 473) no Hoare annotation was computed. [2018-09-26 08:19:23,603 INFO L426 ceAbstractionStarter]: For program point L373(lines 373 384) no Hoare annotation was computed. [2018-09-26 08:19:23,604 INFO L426 ceAbstractionStarter]: For program point L452(lines 446 453) no Hoare annotation was computed. [2018-09-26 08:19:23,619 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 08:19:23 BoogieIcfgContainer [2018-09-26 08:19:23,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 08:19:23,620 INFO L168 Benchmark]: Toolchain (without parser) took 2892.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-09-26 08:19:23,623 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:19:23,623 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:19:23,624 INFO L168 Benchmark]: Boogie Preprocessor took 71.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:19:23,625 INFO L168 Benchmark]: RCFGBuilder took 1043.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-26 08:19:23,626 INFO L168 Benchmark]: TraceAbstraction took 1722.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-09-26 08:19:23,630 INFO L336 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 71.59 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1043.46 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1722.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 545]: 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 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 531]: Loop Invariant Derived loop invariant: (((((!(~p1_old == ~nomsg) && ~mode1 == 1) && ~r1 <= 0) && assert_~arg == 1) && ~mode3 == 1) && ~mode2 == 1) && 0 <= ~r1 - InvariantResult [Line: 366]: Loop Invariant Derived loop invariant: (((((((~r1 <= 0 && 0 <= ~send1) && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && ~mode2 == 256 * (~mode2 / 256)) && ~send1 <= 127) && 0 == ~nomsg + 1) && 0 <= ~r1) || ((((((!(~p1_old == ~nomsg) && ~mode1 == 1) && ~r1 <= 0) && assert_~arg == 1) && ~mode3 == 1) && ~mode2 == 1) && 0 <= ~r1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15 SDtfs, 10 SDslu, 29 SDs, 0 SdLazy, 60 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 90 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 2254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 19/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_08-19-23-653.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c_12.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_08-19-23-653.csv Received shutdown request...