java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:49:20,548 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:49:20,550 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:49:20,562 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:49:20,562 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:49:20,563 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:49:20,564 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:49:20,566 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:49:20,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:49:20,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:49:20,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:49:20,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:49:20,571 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:49:20,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:49:20,573 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:49:20,574 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:49:20,575 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:49:20,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:49:20,579 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:49:20,580 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:49:20,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:49:20,583 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:49:20,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:49:20,587 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:49:20,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:49:20,588 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:49:20,592 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:49:20,592 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:49:20,593 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:49:20,598 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:49:20,599 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:49:20,601 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:49:20,606 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:49:20,628 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:49:20,628 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:49:20,629 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:49:20,629 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:49:20,630 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:49:20,630 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:49:20,630 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:49:20,630 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:49:20,678 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:49:20,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:49:20,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:49:20,696 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:49:20,698 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:49:20,699 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl [2018-07-23 13:49:20,699 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl' [2018-07-23 13:49:20,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:49:20,784 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:49:20,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:49:20,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:49:20,785 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:49:20,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:49:20,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:49:20,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:49:20,850 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:49:20,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/1) ... [2018-07-23 13:49:20,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:49:20,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:49:21,703 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:49:21,703 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:21 BoogieIcfgContainer [2018-07-23 13:49:21,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:49:21,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:49:21,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:49:21,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:49:21,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:20" (1/2) ... [2018-07-23 13:49:21,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ff8ca6 and model type pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:49:21, skipping insertion in model container [2018-07-23 13:49:21,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:21" (2/2) ... [2018-07-23 13:49:21,715 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl [2018-07-23 13:49:21,731 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:49:21,741 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:49:21,798 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:49:21,799 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:49:21,799 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:49:21,799 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:49:21,800 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:49:21,800 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:49:21,800 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:49:21,801 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:49:21,801 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:49:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 13:49:21,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:49:21,831 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:21,832 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:49:21,833 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:21,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1001172, now seen corresponding path program 1 times [2018-07-23 13:49:21,846 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,039 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:22,040 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:49:22,042 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,043 INFO L185 omatonBuilderFactory]: Interpolants [9#true, 10#false, 11#(and (= ~mode1 (* 256 (div ~mode1 256))) (<= ~r1 (* 256 (div ~r1 256)))), 12#(= 1 ULTIMATE.start_assert_~arg)] [2018-07-23 13:49:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,045 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:22,060 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:22,061 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:22,065 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 13:49:22,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:22,165 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 13:49:22,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:49:22,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:49:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:22,179 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:49:22,179 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 13:49:22,186 INFO L575 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 [2018-07-23 13:49:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 13:49:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-23 13:49:22,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:49:22,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:49:22,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 13:49:22,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:22,230 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:49:22,231 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:49:22,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:49:22,231 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:22,232 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 13:49:22,232 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:22,232 INFO L82 PathProgramCache]: Analyzing trace with hash 962207787, now seen corresponding path program 1 times [2018-07-23 13:49:22,232 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,407 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:22,407 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 13:49:22,407 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:22,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,409 INFO L185 omatonBuilderFactory]: Interpolants [49#true, 50#false, 51#(and (= ~mode1 (* 256 (div ~mode1 256))) (<= ~r1 (* 256 (div ~r1 256)))), 52#(and (= ~mode1 1) (= ULTIMATE.start_assert_~arg 1) (<= ~r1 (* 256 (div ~r1 256)))), 53#(and (= ~mode1 1) (<= ~r1 (* 256 (div ~r1 256)))), 54#(and (<= ULTIMATE.start_assert_~arg 1) (<= 1 ULTIMATE.start_assert_~arg))] [2018-07-23 13:49:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,412 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 13:49:22,413 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 13:49:22,413 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:49:22,414 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-23 13:49:22,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:22,517 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-23 13:49:22,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:49:22,517 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-23 13:49:22,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:22,518 INFO L225 Difference]: With dead ends: 12 [2018-07-23 13:49:22,518 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 13:49:22,519 INFO L575 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 [2018-07-23 13:49:22,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 13:49:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-23 13:49:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:49:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 13:49:22,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 13:49:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:22,524 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 13:49:22,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 13:49:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 13:49:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:49:22,525 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:22,525 INFO L357 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 13:49:22,525 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:22,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1263796162, now seen corresponding path program 2 times [2018-07-23 13:49:22,526 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,673 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:22,673 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-23 13:49:22,673 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,674 INFO L185 omatonBuilderFactory]: Interpolants [97#true, 98#false, 99#(= ~mode1 (* 256 (div ~mode1 256))), 100#(= ~mode1 1), 101#(and (or (and (<= ~r1 (+ (* 256 (div ~r1 256)) 4)) (<= (div ~r1 256) 0) (<= 1 ~r1)) (= ULTIMATE.start_assert_~arg 0)) (= ~mode1 0)), 102#(and (<= ~r1 (+ (* 256 (div ~r1 256)) 4)) (<= (div ~r1 256) 0) (= ~mode1 0) (<= 1 ~r1)), 103#(= ULTIMATE.start_assert_~arg 1)] [2018-07-23 13:49:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,675 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 13:49:22,675 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 13:49:22,676 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-23 13:49:22,678 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-23 13:49:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:22,784 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-23 13:49:22,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 13:49:22,785 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-23 13:49:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:22,786 INFO L225 Difference]: With dead ends: 13 [2018-07-23 13:49:22,786 INFO L226 Difference]: Without dead ends: 11 [2018-07-23 13:49:22,787 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-07-23 13:49:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-23 13:49:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-23 13:49:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-23 13:49:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-23 13:49:22,803 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-23 13:49:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:22,804 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-23 13:49:22,804 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 13:49:22,804 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-23 13:49:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-23 13:49:22,805 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:22,805 INFO L357 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-23 13:49:22,806 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:22,806 INFO L82 PathProgramCache]: Analyzing trace with hash -967551591, now seen corresponding path program 3 times [2018-07-23 13:49:22,806 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:22,928 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 13:49:22,930 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:22,930 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:49:22,931 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:49:22,933 INFO L185 omatonBuilderFactory]: Interpolants [154#true, 155#false, 156#(and (<= 0 ~send1) (= ~mode1 (* 256 (div ~mode1 256))) (= ~mode2 (* 256 (div ~mode2 256))) (<= ~send1 127) (= 0 (+ ~nomsg 1))), 157#(and (not (= ~p1_old ~nomsg)) (= ~mode2 1))] [2018-07-23 13:49:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-23 13:49:22,934 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:22,934 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:22,934 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:22,935 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-07-23 13:49:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:22,953 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 13:49:22,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:49:22,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-07-23 13:49:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:22,956 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:49:22,957 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:49:22,957 INFO L575 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 [2018-07-23 13:49:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:49:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:49:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:49:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:49:22,959 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-07-23 13:49:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:22,959 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:49:22,959 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:49:22,960 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:49:22,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:49:23,004 INFO L421 ceAbstractionStarter]: For program point L340(lines 340 350) no Hoare annotation was computed. [2018-07-23 13:49:23,006 INFO L417 ceAbstractionStarter]: At program point L461(lines 308 461) the Hoare annotation is: (let ((.cse0 (<= ~r1 (* 256 (div ~r1 256))))) (or (and (<= 0 ~send1) (= ~mode1 (* 256 (div ~mode1 256))) (= ~mode2 (* 256 (div ~mode2 256))) (<= ~send1 127) (= 0 (+ ~nomsg 1)) .cse0) (and (not (= ~p1_old ~nomsg)) (= ~mode1 1) (= ULTIMATE.start_assert_~arg 1) (= ~mode2 1) .cse0))) [2018-07-23 13:49:23,006 INFO L421 ceAbstractionStarter]: For program point L375(lines 369 376) no Hoare annotation was computed. [2018-07-23 13:49:23,006 INFO L417 ceAbstractionStarter]: At program point L452(lines 452 459) the Hoare annotation is: (and (not (= ~p1_old ~nomsg)) (= ~mode1 1) (= ~mode2 1) (<= ~r1 (* 256 (div ~r1 256))) (= 1 ULTIMATE.start_assert_~arg)) [2018-07-23 13:49:23,007 INFO L417 ceAbstractionStarter]: At program point L458(lines 458 462) the Hoare annotation is: false [2018-07-23 13:49:23,007 INFO L421 ceAbstractionStarter]: For program point L335(lines 326 336) no Hoare annotation was computed. [2018-07-23 13:49:23,007 INFO L421 ceAbstractionStarter]: For program point L415(lines 409 416) no Hoare annotation was computed. [2018-07-23 13:49:23,007 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 91 464) no Hoare annotation was computed. [2018-07-23 13:49:23,007 INFO L421 ceAbstractionStarter]: For program point L380(lines 380 390) no Hoare annotation was computed. [2018-07-23 13:49:23,008 INFO L421 ceAbstractionStarter]: For program point L360(lines 360 370) no Hoare annotation was computed. [2018-07-23 13:49:23,008 INFO L421 ceAbstractionStarter]: For program point L442(lines 438 443) no Hoare annotation was computed. [2018-07-23 13:49:23,008 INFO L421 ceAbstractionStarter]: For program point L400(lines 400 410) no Hoare annotation was computed. [2018-07-23 13:49:23,008 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 91 464) the Hoare annotation is: true [2018-07-23 13:49:23,009 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 91 464) the Hoare annotation is: false [2018-07-23 13:49:23,009 INFO L421 ceAbstractionStarter]: For program point L395(lines 389 396) no Hoare annotation was computed. [2018-07-23 13:49:23,009 INFO L421 ceAbstractionStarter]: For program point L355(lines 349 356) no Hoare annotation was computed. [2018-07-23 13:49:23,009 INFO L421 ceAbstractionStarter]: For program point L431(lines 431 439) no Hoare annotation was computed. [2018-07-23 13:49:23,009 INFO L421 ceAbstractionStarter]: For program point L315(lines 315 327) no Hoare annotation was computed. [2018-07-23 13:49:23,010 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 463) the Hoare annotation is: false [2018-07-23 13:49:23,023 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:49:23 BoogieIcfgContainer [2018-07-23 13:49:23,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:49:23,025 INFO L168 Benchmark]: Toolchain (without parser) took 2241.56 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:23,029 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 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. [2018-07-23 13:49:23,031 INFO L168 Benchmark]: Boogie Preprocessor took 64.36 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. [2018-07-23 13:49:23,032 INFO L168 Benchmark]: RCFGBuilder took 854.29 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. [2018-07-23 13:49:23,033 INFO L168 Benchmark]: TraceAbstraction took 1318.88 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:23,038 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 0.20 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 64.36 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 854.29 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 1318.88 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 463]: 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: 452]: Loop Invariant Derived loop invariant: (((!(~p1_old == ~nomsg) && ~mode1 == 1) && ~mode2 == 1) && ~r1 <= 256 * (~r1 / 256)) && 1 == assert_~arg - InvariantResult [Line: 458]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 308]: Loop Invariant Derived loop invariant: (((((0 <= ~send1 && ~mode1 == 256 * (~mode1 / 256)) && ~mode2 == 256 * (~mode2 / 256)) && ~send1 <= 127) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) || ((((!(~p1_old == ~nomsg) && ~mode1 == 1) && assert_~arg == 1) && ~mode2 == 1) && ~r1 <= 256 * (~r1 / 256)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 10 SDslu, 17 SDs, 0 SdLazy, 52 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 12/20 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 80 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 12/20 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.ufo.UNBOUNDED.pals.c_11.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-49-23-058.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c_11.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-49-23-058.csv Received shutdown request...