java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./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.4.ufo.UNBOUNDED.pals.c_16.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:49:31,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:49:31,817 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:49:31,830 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:49:31,831 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:49:31,832 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:49:31,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:49:31,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:49:31,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:49:31,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:49:31,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:49:31,841 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:49:31,842 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:49:31,843 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:49:31,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:49:31,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:49:31,847 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:49:31,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:49:31,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:49:31,853 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:49:31,855 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:49:31,856 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:49:31,859 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:49:31,859 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:49:31,860 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:49:31,861 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:49:31,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:49:31,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:49:31,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:49:31,866 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:49:31,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:49:31,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:49:31,867 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:49:31,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:49:31,869 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:49:31,870 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:49:31,871 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:49:31,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:49:31,887 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:49:31,888 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:49:31,889 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:49:31,889 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:49:31,889 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:49:31,889 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:49:31,890 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:49:31,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:49:31,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:49:31,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:49:31,963 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:49:31,964 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:49:31,964 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl [2018-07-25 08:49:31,965 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl' [2018-07-25 08:49:32,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:49:32,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:49:32,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:32,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:49:32,059 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:49:32,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:32,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:49:32,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:49:32,112 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:49:32,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:49:32,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:49:32,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:49:32,160 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:49:32,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/1) ... [2018-07-25 08:49:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:49:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:49:33,137 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:49:33,139 INFO L202 PluginConnector]: Adding new model pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:33 BoogieIcfgContainer [2018-07-25 08:49:33,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:49:33,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:49:33,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:49:33,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:49:33,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:32" (1/2) ... [2018-07-25 08:49:33,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9491f2 and model type pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:49:33, skipping insertion in model container [2018-07-25 08:49:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:33" (2/2) ... [2018-07-25 08:49:33,150 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl [2018-07-25 08:49:33,160 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:49:33,172 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:49:33,215 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:49:33,216 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:49:33,216 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:49:33,216 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:49:33,216 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:49:33,217 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:49:33,217 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:49:33,217 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:49:33,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:49:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:49:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:49:33,241 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:33,242 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:49:33,244 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash 998225, now seen corresponding path program 1 times [2018-07-25 08:49:33,256 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:33,437 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:49:33,438 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:49:33,443 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:33,459 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:33,459 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:33,462 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:49:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:33,530 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:49:33,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:33,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:49:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:33,558 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:49:33,559 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:49:33,568 INFO L574 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 [2018-07-25 08:49:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:49:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:49:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:49:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:49:33,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:49:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:33,613 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:49:33,613 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:49:33,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:49:33,614 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:33,614 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:49:33,615 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:33,615 INFO L82 PathProgramCache]: Analyzing trace with hash 959374695, now seen corresponding path program 1 times [2018-07-25 08:49:33,615 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:33,706 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:33,706 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:49:33,709 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:49:33,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:49:33,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:49:33,710 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 08:49:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:33,835 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:49:33,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:49:33,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 08:49:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:33,838 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:49:33,839 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:49:33,840 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:49:33,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:49:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 08:49:33,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:49:33,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:49:33,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:49:33,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:33,847 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:49:33,847 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:49:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:49:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:49:33,850 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:33,850 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:49:33,850 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:33,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1458806275, now seen corresponding path program 2 times [2018-07-25 08:49:33,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:34,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:49:34,019 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:34,019 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:49:34,020 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:34,020 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:34,024 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:34,024 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-25 08:49:34,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:34,061 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:49:34,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:34,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 08:49:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:34,065 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:49:34,065 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:49:34,066 INFO L574 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 [2018-07-25 08:49:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:49:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:49:34,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:49:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:49:34,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 08:49:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:34,069 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:49:34,069 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:34,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:49:34,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:49:34,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:49:34,126 INFO L422 ceAbstractionStarter]: For program point L316(lines 308 317) no Hoare annotation was computed. [2018-07-25 08:49:34,126 INFO L422 ceAbstractionStarter]: For program point L250(lines 242 251) no Hoare annotation was computed. [2018-07-25 08:49:34,126 INFO L418 ceAbstractionStarter]: At program point L366(lines 366 370) the Hoare annotation is: false [2018-07-25 08:49:34,127 INFO L422 ceAbstractionStarter]: For program point L255(lines 255 265) no Hoare annotation was computed. [2018-07-25 08:49:34,127 INFO L422 ceAbstractionStarter]: For program point L350(lines 345 351) no Hoare annotation was computed. [2018-07-25 08:49:34,127 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 66 372) the Hoare annotation is: true [2018-07-25 08:49:34,127 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 66 372) no Hoare annotation was computed. [2018-07-25 08:49:34,127 INFO L422 ceAbstractionStarter]: For program point L272(lines 264 273) no Hoare annotation was computed. [2018-07-25 08:49:34,128 INFO L422 ceAbstractionStarter]: For program point L330(lines 330 336) no Hoare annotation was computed. [2018-07-25 08:49:34,128 INFO L422 ceAbstractionStarter]: For program point L231(lines 231 243) no Hoare annotation was computed. [2018-07-25 08:49:34,128 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 66 372) the Hoare annotation is: false [2018-07-25 08:49:34,128 INFO L422 ceAbstractionStarter]: For program point L277(lines 277 287) no Hoare annotation was computed. [2018-07-25 08:49:34,128 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 371) the Hoare annotation is: false [2018-07-25 08:49:34,129 INFO L422 ceAbstractionStarter]: For program point L339(lines 335 346) no Hoare annotation was computed. [2018-07-25 08:49:34,129 INFO L418 ceAbstractionStarter]: At program point L360(lines 360 367) the Hoare annotation is: (and (<= ULTIMATE.start_assert_~arg 1) (<= 1 ~mode1) (<= ~mode1 1) (<= 1 ULTIMATE.start_assert_~arg) (<= ~r1 (* 256 (div ~r1 256))) (not (= ~p4_old ~nomsg))) [2018-07-25 08:49:34,129 INFO L422 ceAbstractionStarter]: For program point L294(lines 286 295) no Hoare annotation was computed. [2018-07-25 08:49:34,131 INFO L418 ceAbstractionStarter]: At program point L369(lines 224 369) the Hoare annotation is: (let ((.cse0 (<= ~r1 (* 256 (div ~r1 256))))) (or (and (= ~mode1 (* 256 (div ~mode1 256))) (<= 0 ~send4) (<= ~send4 127) (= 0 (+ ~nomsg 1)) .cse0 (= ~mode4 (* 256 (div ~mode4 256)))) (and (<= ULTIMATE.start_assert_~arg 1) (<= 1 ~mode1) (<= ~mode1 1) (<= 1 ULTIMATE.start_assert_~arg) .cse0 (not (= ~p4_old ~nomsg))))) [2018-07-25 08:49:34,131 INFO L422 ceAbstractionStarter]: For program point L299(lines 299 309) no Hoare annotation was computed. [2018-07-25 08:49:34,145 INFO L202 PluginConnector]: Adding new model pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:49:34 BoogieIcfgContainer [2018-07-25 08:49:34,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:49:34,146 INFO L168 Benchmark]: Toolchain (without parser) took 2090.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:34,149 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:34,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:34,150 INFO L168 Benchmark]: Boogie Preprocessor took 47.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:34,151 INFO L168 Benchmark]: RCFGBuilder took 980.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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. [2018-07-25 08:49:34,153 INFO L168 Benchmark]: TraceAbstraction took 1004.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:34,158 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 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.94 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.61 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 980.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 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 1004.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 371]: 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: 366]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 360]: Loop Invariant Derived loop invariant: ((((assert_~arg <= 1 && 1 <= ~mode1) && ~mode1 <= 1) && 1 <= assert_~arg) && ~r1 <= 256 * (~r1 / 256)) && !(~p4_old == ~nomsg) - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: (((((~mode1 == 256 * (~mode1 / 256) && 0 <= ~send4) && ~send4 <= 127) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) && ~mode4 == 256 * (~mode4 / 256)) || (((((assert_~arg <= 1 && 1 <= ~mode1) && ~mode1 <= 1) && 1 <= assert_~arg) && ~r1 <= 256 * (~r1 / 256)) && !(~p4_old == ~nomsg)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 23 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 86 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 688 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-49-34-172.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4.ufo.UNBOUNDED.pals.c_16.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-49-34-172.csv Received shutdown request...