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-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:28:33,574 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:28:33,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:28:33,593 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:28:33,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:28:33,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:28:33,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:28:33,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:28:33,599 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:28:33,600 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:28:33,601 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:28:33,602 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:28:33,602 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:28:33,603 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:28:33,604 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:28:33,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:28:33,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:28:33,608 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:28:33,610 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:28:33,612 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:28:33,613 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:28:33,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:28:33,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:28:33,617 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:28:33,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:28:33,618 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:28:33,619 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:28:33,622 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:28:33,623 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:28:33,624 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:28:33,624 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:28:33,628 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:28:33,632 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:28:33,648 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:28:33,652 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:28:33,656 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:28:33,656 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:28:33,656 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:28:33,656 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:28:33,657 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:28:33,657 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:28:33,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:28:33,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:28:33,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:28:33,754 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:28:33,755 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:28:33,756 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl [2018-07-25 13:28:33,756 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl' [2018-07-25 13:28:33,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:28:33,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:28:33,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:28:33,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:28:33,836 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:28:33,855 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,874 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:28:33,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:28:33,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:28:33,886 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:28:33,897 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,897 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,902 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,902 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,930 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,937 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,944 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:33,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:28:33,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:28:33,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:28:33,953 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:28:33,954 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 25.07 01:28:33" (1/1) ... [2018-07-25 13:28:34,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:28:34,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:28:34,855 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:28:34,856 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 25.07 01:28:34 BoogieIcfgContainer [2018-07-25 13:28:34,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:28:34,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:28:34,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:28:34,864 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:28:34,864 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 25.07 01:28:33" (1/2) ... [2018-07-25 13:28:34,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df0d526 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 25.07 01:28:34, skipping insertion in model container [2018-07-25 13:28:34,866 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 25.07 01:28:34" (2/2) ... [2018-07-25 13:28:34,870 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl [2018-07-25 13:28:34,879 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:28:34,887 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:28:34,941 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:28:34,941 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:28:34,942 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:28:34,942 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:28:34,942 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:28:34,942 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:28:34,942 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:28:34,942 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:28:34,943 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:28:34,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:28:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:28:34,965 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:34,966 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:28:34,967 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:34,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1001234, now seen corresponding path program 1 times [2018-07-25 13:28:34,978 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:35,165 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 13:28:35,168 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:28:35,168 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:28:35,173 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:28:35,191 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:28:35,192 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:28:35,194 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 13:28:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:35,269 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 13:28:35,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:28:35,271 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 13:28:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:35,282 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:28:35,283 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:28:35,287 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 13:28:35,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:28:35,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 13:28:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:28:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:28:35,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:28:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:35,321 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:28:35,321 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:28:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:28:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:28:35,322 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:35,322 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:28:35,323 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash 962148267, now seen corresponding path program 1 times [2018-07-25 13:28:35,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:35,429 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 13:28:35,429 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:35,430 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:28:35,432 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:28:35,433 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:28:35,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:28:35,433 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 13:28:35,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:35,517 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 13:28:35,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:28:35,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 13:28:35,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:35,520 INFO L225 Difference]: With dead ends: 12 [2018-07-25 13:28:35,520 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:28:35,523 INFO L574 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 [2018-07-25 13:28:35,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:28:35,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 13:28:35,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:28:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:28:35,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:28:35,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:35,529 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:28:35,529 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:28:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:28:35,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:28:35,530 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:35,530 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:28:35,531 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:35,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1206478340, now seen corresponding path program 2 times [2018-07-25 13:28:35,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:35,687 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 13:28:35,688 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:35,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:28:35,689 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:28:35,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:28:35,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:28:35,691 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-25 13:28:35,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:35,726 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 13:28:35,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:28:35,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 13:28:35,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:35,728 INFO L225 Difference]: With dead ends: 9 [2018-07-25 13:28:35,728 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:28:35,730 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 13:28:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:28:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:28:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:28:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:28:35,732 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 13:28:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:35,734 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:28:35,734 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:28:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:28:35,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:28:35,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:28:35,810 INFO L422 ceAbstractionStarter]: For program point L316(lines 316 327) no Hoare annotation was computed. [2018-07-25 13:28:35,810 INFO L422 ceAbstractionStarter]: For program point L399(lines 399 409) no Hoare annotation was computed. [2018-07-25 13:28:35,811 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 91 466) the Hoare annotation is: true [2018-07-25 13:28:35,811 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 91 466) no Hoare annotation was computed. [2018-07-25 13:28:35,811 INFO L422 ceAbstractionStarter]: For program point L441(lines 436 442) no Hoare annotation was computed. [2018-07-25 13:28:35,811 INFO L422 ceAbstractionStarter]: For program point L371(lines 365 372) no Hoare annotation was computed. [2018-07-25 13:28:35,812 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 91 466) the Hoare annotation is: false [2018-07-25 13:28:35,812 INFO L422 ceAbstractionStarter]: For program point L351(lines 345 352) no Hoare annotation was computed. [2018-07-25 13:28:35,812 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 465) the Hoare annotation is: false [2018-07-25 13:28:35,812 INFO L422 ceAbstractionStarter]: For program point L376(lines 376 388) no Hoare annotation was computed. [2018-07-25 13:28:35,813 INFO L418 ceAbstractionStarter]: At program point L463(lines 463 464) the Hoare annotation is: false [2018-07-25 13:28:35,813 INFO L422 ceAbstractionStarter]: For program point L430(lines 430 437) no Hoare annotation was computed. [2018-07-25 13:28:35,813 INFO L422 ceAbstractionStarter]: For program point L331(lines 326 332) no Hoare annotation was computed. [2018-07-25 13:28:35,815 INFO L418 ceAbstractionStarter]: At program point L459(lines 309 459) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and .cse0 (= ~mode5 (* 256 (div ~mode5 256))) (= ~mode1 (* 256 (div ~mode1 256))) (<= 0 ~send4) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (= ~mode4 (* 256 (div ~mode4 256))) .cse1) (and (<= ULTIMATE.start_assert_~arg 1) .cse0 (<= 1 ~mode5) (<= 1 ULTIMATE.start_assert_~arg) (not (= ~p4_old ~nomsg)) (<= ~mode5 1) .cse1))) [2018-07-25 13:28:35,815 INFO L422 ceAbstractionStarter]: For program point L356(lines 356 366) no Hoare annotation was computed. [2018-07-25 13:28:35,815 INFO L418 ceAbstractionStarter]: At program point L451(lines 451 460) the Hoare annotation is: (and (<= ULTIMATE.start_assert_~arg 1) (<= ~r1 0) (<= 1 ~mode5) (<= 1 ULTIMATE.start_assert_~arg) (not (= ~p4_old ~nomsg)) (<= ~mode5 1) (<= 0 ~r1)) [2018-07-25 13:28:35,816 INFO L422 ceAbstractionStarter]: For program point L414(lines 408 415) no Hoare annotation was computed. [2018-07-25 13:28:35,816 INFO L422 ceAbstractionStarter]: For program point L336(lines 336 346) no Hoare annotation was computed. [2018-07-25 13:28:35,816 INFO L422 ceAbstractionStarter]: For program point L394(lines 387 395) no Hoare annotation was computed. [2018-07-25 13:28:35,829 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 25.07 01:28:35 BoogieIcfgContainer [2018-07-25 13:28:35,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:28:35,830 INFO L168 Benchmark]: Toolchain (without parser) took 1995.99 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:35,832 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 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 13:28:35,833 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.48 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 13:28:35,834 INFO L168 Benchmark]: Boogie Preprocessor took 66.32 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 13:28:35,835 INFO L168 Benchmark]: RCFGBuilder took 903.99 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:35,836 INFO L168 Benchmark]: TraceAbstraction took 971.30 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:35,840 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 0.17 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 49.48 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 66.32 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 903.99 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 971.30 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: 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: 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 - InvariantResult [Line: 451]: Loop Invariant Derived loop invariant: (((((assert_~arg <= 1 && ~r1 <= 0) && 1 <= ~mode5) && 1 <= assert_~arg) && !(~p4_old == ~nomsg)) && ~mode5 <= 1) && 0 <= ~r1 - InvariantResult [Line: 309]: Loop Invariant Derived loop invariant: (((((((~r1 <= 0 && ~mode5 == 256 * (~mode5 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && 0 <= ~send4) && ~send4 <= 127) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 <= ~r1) || ((((((assert_~arg <= 1 && ~r1 <= 0) && 1 <= ~mode5) && 1 <= assert_~arg) && !(~p4_old == ~nomsg)) && ~mode5 <= 1) && 0 <= ~r1) - InvariantResult [Line: 463]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 22 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, 1 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, 90 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 601 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-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-28-35-864.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c_11.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-28-35-864.csv Received shutdown request...