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.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:49:34,442 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:49:34,444 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:49:34,458 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:49:34,458 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:49:34,459 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:49:34,461 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:49:34,462 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:49:34,464 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:49:34,465 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:49:34,466 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:49:34,466 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:49:34,467 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:49:34,468 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:49:34,469 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:49:34,470 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:49:34,471 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:49:34,473 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:49:34,475 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:49:34,476 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:49:34,477 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:49:34,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:49:34,481 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:49:34,481 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:49:34,482 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:49:34,486 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:49:34,487 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:49:34,487 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:49:34,490 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:49:34,492 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:49:34,492 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:49:34,493 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:49:34,500 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 13:49:34,525 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:49:34,525 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:49:34,528 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:49:34,528 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:49:34,528 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:49:34,528 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:49:34,528 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:49:34,529 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:49:34,592 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:49:34,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:49:34,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:49:34,621 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:49:34,621 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:49:34,622 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl [2018-07-23 13:49:34,623 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl' [2018-07-23 13:49:34,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:49:34,728 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:49:34,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:49:34,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:49:34,730 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:49:34,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:49:34,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:49:34,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:49:34,809 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:49:34,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/1) ... [2018-07-23 13:49:34,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:49:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:49:35,736 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:49:35,737 INFO L202 PluginConnector]: Adding new model pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:35 BoogieIcfgContainer [2018-07-23 13:49:35,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:49:35,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:49:35,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:49:35,744 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:49:35,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:34" (1/2) ... [2018-07-23 13:49:35,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da3f2b6 and model type pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:49:35, skipping insertion in model container [2018-07-23 13:49:35,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:35" (2/2) ... [2018-07-23 13:49:35,749 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl [2018-07-23 13:49:35,759 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:49:35,771 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:49:35,820 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:49:35,821 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:49:35,821 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:49:35,822 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:49:35,822 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:49:35,822 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:49:35,822 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:49:35,822 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:49:35,823 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:49:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 13:49:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:49:35,851 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:35,852 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:49:35,853 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash 998225, now seen corresponding path program 1 times [2018-07-23 13:49:35,868 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:36,074 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 13:49:36,077 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:36,078 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:49:36,080 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:36,080 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 13:49:36,082 INFO L185 omatonBuilderFactory]: Interpolants [9#true, 10#false, 11#(and (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (<= ~r1 (* 256 (div ~r1 256)))), 12#(= ULTIMATE.start_assert_~arg 1)] [2018-07-23 13:49:36,082 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 13:49:36,083 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:36,101 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:36,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:36,106 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 13:49:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:36,184 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 13:49:36,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:49:36,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:49:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:36,201 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:49:36,202 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 13:49:36,206 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 13:49:36,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 13:49:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-23 13:49:36,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:49:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:49:36,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 13:49:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:36,243 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:49:36,244 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:49:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:49:36,245 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:36,245 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 13:49:36,245 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:36,245 INFO L82 PathProgramCache]: Analyzing trace with hash 959374695, now seen corresponding path program 1 times [2018-07-23 13:49:36,246 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:36,362 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 13:49:36,362 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:36,363 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 13:49:36,363 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:36,363 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 13:49:36,365 INFO L185 omatonBuilderFactory]: Interpolants [49#true, 50#false, 51#(and (= ~mode1 (* 256 (div ~mode1 256))) (<= ~r1 (* 256 (div ~r1 256)))), 52#(and (= ~mode1 1) (<= ~r1 (* 256 (div ~r1 256)))), 53#(= ULTIMATE.start_assert_~arg 1)] [2018-07-23 13:49:36,366 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 13:49:36,368 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:49:36,368 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:49:36,368 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:49:36,370 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-23 13:49:36,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:36,437 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-23 13:49:36,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:49:36,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-23 13:49:36,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:36,438 INFO L225 Difference]: With dead ends: 12 [2018-07-23 13:49:36,439 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 13:49:36,440 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 13:49:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 13:49:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-23 13:49:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:49:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 13:49:36,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 13:49:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:36,444 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 13:49:36,444 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:49:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 13:49:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:49:36,445 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:36,446 INFO L357 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 13:49:36,446 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:36,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1458806275, now seen corresponding path program 2 times [2018-07-23 13:49:36,447 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:36,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 13:49:36,572 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:36,572 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:49:36,572 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:36,572 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 13:49:36,573 INFO L185 omatonBuilderFactory]: Interpolants [98#true, 99#false, 100#(and (<= 0 ~send1) (= ~mode1 (* 256 (div ~mode1 256))) (= ~mode2 (* 256 (div ~mode2 256))) (<= ~send1 127) (= 0 (+ ~nomsg 1))), 101#(and (not (= ~p1_old ~nomsg)) (= ~mode2 1))] [2018-07-23 13:49:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 13:49:36,578 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:36,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:36,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:36,579 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-23 13:49:36,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:36,607 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:49:36,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:49:36,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-23 13:49:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:36,613 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:49:36,616 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:49:36,616 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 13:49:36,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:49:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:49:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:49:36,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:49:36,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-23 13:49:36,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:36,619 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:49:36,619 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:49:36,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:49:36,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:49:36,668 INFO L421 ceAbstractionStarter]: For program point L349(lines 344 350) no Hoare annotation was computed. [2018-07-23 13:49:36,668 INFO L421 ceAbstractionStarter]: For program point L293(lines 285 294) no Hoare annotation was computed. [2018-07-23 13:49:36,668 INFO L421 ceAbstractionStarter]: For program point L254(lines 254 264) no Hoare annotation was computed. [2018-07-23 13:49:36,668 INFO L421 ceAbstractionStarter]: For program point L298(lines 298 309) no Hoare annotation was computed. [2018-07-23 13:49:36,668 INFO L421 ceAbstractionStarter]: For program point L338(lines 334 345) no Hoare annotation was computed. [2018-07-23 13:49:36,669 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 66 371) no Hoare annotation was computed. [2018-07-23 13:49:36,669 INFO L417 ceAbstractionStarter]: At program point L365(lines 365 369) the Hoare annotation is: false [2018-07-23 13:49:36,669 INFO L421 ceAbstractionStarter]: For program point L249(lines 241 250) no Hoare annotation was computed. [2018-07-23 13:49:36,671 INFO L417 ceAbstractionStarter]: At program point L368(lines 224 368) the Hoare annotation is: (let ((.cse0 (<= ~r1 (* 256 (div ~r1 256))))) (or (and (<= 0 ~send1) (= ~mode3 (* 256 (div ~mode3 256))) (= ~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 13:49:36,671 INFO L421 ceAbstractionStarter]: For program point L329(lines 329 335) no Hoare annotation was computed. [2018-07-23 13:49:36,671 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 66 371) the Hoare annotation is: true [2018-07-23 13:49:36,672 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 66 371) the Hoare annotation is: false [2018-07-23 13:49:36,672 INFO L421 ceAbstractionStarter]: For program point L271(lines 263 272) no Hoare annotation was computed. [2018-07-23 13:49:36,672 INFO L421 ceAbstractionStarter]: For program point L276(lines 276 286) no Hoare annotation was computed. [2018-07-23 13:49:36,672 INFO L421 ceAbstractionStarter]: For program point L231(lines 231 242) no Hoare annotation was computed. [2018-07-23 13:49:36,672 INFO L421 ceAbstractionStarter]: For program point L315(lines 308 316) no Hoare annotation was computed. [2018-07-23 13:49:36,673 INFO L417 ceAbstractionStarter]: At program point L359(lines 359 366) the Hoare annotation is: (and (not (= ~p1_old ~nomsg)) (= ~mode1 1) (= ULTIMATE.start_assert_~arg 1) (= ~mode2 1) (<= ~r1 (* 256 (div ~r1 256)))) [2018-07-23 13:49:36,673 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 370) the Hoare annotation is: false [2018-07-23 13:49:36,690 INFO L202 PluginConnector]: Adding new model pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:49:36 BoogieIcfgContainer [2018-07-23 13:49:36,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:49:36,691 INFO L168 Benchmark]: Toolchain (without parser) took 1966.18 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: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:36,694 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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 13:49:36,696 INFO L168 Benchmark]: Boogie Preprocessor took 77.06 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 13:49:36,697 INFO L168 Benchmark]: RCFGBuilder took 930.25 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:36,699 INFO L168 Benchmark]: TraceAbstraction took 950.25 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:36,705 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 0.22 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 77.06 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 930.25 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 950.25 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 370]: 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: 365]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 359]: Loop Invariant Derived loop invariant: (((!(~p1_old == ~nomsg) && ~mode1 == 1) && assert_~arg == 1) && ~mode2 == 1) && ~r1 <= 256 * (~r1 / 256) - InvariantResult [Line: 224]: Loop Invariant Derived loop invariant: ((((((0 <= ~send1 && ~mode3 == 256 * (~mode3 / 256)) && ~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, 18 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, 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, 5/8 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, 87 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, 605 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_overflow.ufo.UNBOUNDED.pals.c_19.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-49-36-725.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.4_overflow.ufo.UNBOUNDED.pals.c_19.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-49-36-725.csv Received shutdown request...