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.ufo.BOUNDED-10.pals.c_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:49:18,300 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:49:18,303 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:49:18,317 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:49:18,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:49:18,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:49:18,323 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:49:18,325 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:49:18,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:49:18,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:49:18,338 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:49:18,338 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:49:18,342 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:49:18,343 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:49:18,344 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:49:18,345 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:49:18,346 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:49:18,349 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:49:18,351 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:49:18,359 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:49:18,361 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:49:18,362 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:49:18,367 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:49:18,367 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:49:18,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:49:18,368 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:49:18,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:49:18,370 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:49:18,371 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:49:18,372 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:49:18,372 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:49:18,373 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 08:49:18,377 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:49:18,393 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:49:18,394 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:49:18,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:49:18,395 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:49:18,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:49:18,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:49:18,396 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:49:18,396 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:49:18,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:49:18,472 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:49:18,480 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:49:18,481 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:49:18,482 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:49:18,483 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl [2018-07-25 08:49:18,483 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl' [2018-07-25 08:49:18,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:49:18,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:49:18,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:18,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:49:18,590 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:49:18,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:49:18,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:49:18,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:49:18,651 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:49:18,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:49:18,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:49:18,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:49:18,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:49:18,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/1) ... [2018-07-25 08:49:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:49:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:49:19,637 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:49:19,638 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:19 BoogieIcfgContainer [2018-07-25 08:49:19,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:49:19,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:49:19,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:49:19,644 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:49:19,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:49:18" (1/2) ... [2018-07-25 08:49:19,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ee56d2 and model type pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:49:19, skipping insertion in model container [2018-07-25 08:49:19,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:49:19" (2/2) ... [2018-07-25 08:49:19,649 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl [2018-07-25 08:49:19,659 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:49:19,669 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:49:19,718 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:49:19,718 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:49:19,719 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:49:19,719 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:49:19,719 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:49:19,719 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:49:19,719 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:49:19,720 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:49:19,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:49:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:49:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:49:19,749 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:19,750 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:49:19,751 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:19,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1001172, now seen corresponding path program 1 times [2018-07-25 08:49:19,763 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:19,980 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:49:19,980 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:49:19,985 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:20,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:20,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:20,008 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:49:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:20,065 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:49:20,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:20,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:49:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:20,079 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:49:20,080 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:49:20,084 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:20,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:49:20,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:49:20,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:49:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:49:20,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:49:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:20,120 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:49:20,120 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:49:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:49:20,121 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:20,121 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:49:20,122 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:20,122 INFO L82 PathProgramCache]: Analyzing trace with hash 962207787, now seen corresponding path program 1 times [2018-07-25 08:49:20,122 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:20,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:49:20,214 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:20,214 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 08:49:20,216 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 08:49:20,217 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 08:49:20,217 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:49:20,218 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 08:49:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:20,290 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 08:49:20,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:49:20,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 08:49:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:20,291 INFO L225 Difference]: With dead ends: 12 [2018-07-25 08:49:20,292 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 08:49:20,293 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:49:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 08:49:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 08:49:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:49:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:49:20,302 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:49:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:20,303 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:49:20,303 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 08:49:20,303 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:49:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:49:20,304 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:49:20,304 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:49:20,305 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:49:20,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1263796162, now seen corresponding path program 2 times [2018-07-25 08:49:20,306 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:49:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:49:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-25 08:49:20,436 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:49:20,436 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 08:49:20,436 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:49:20,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:49:20,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:20,438 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-25 08:49:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:49:20,466 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:49:20,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 08:49:20,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-25 08:49:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:49:20,471 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:49:20,471 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:49:20,472 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:49:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:49:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:49:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:49:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:49:20,476 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 08:49:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:49:20,476 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:49:20,476 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:49:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:49:20,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:49:20,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:49:20,571 INFO L422 ceAbstractionStarter]: For program point L353(lines 347 354) no Hoare annotation was computed. [2018-07-25 08:49:20,573 INFO L418 ceAbstractionStarter]: At program point L465(lines 310 465) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and (<= ULTIMATE.start_assert_~arg 1) .cse0 (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode4 1) (<= 1 ULTIMATE.start_assert_~arg) .cse1 (not (= ~p3_old ~nomsg))) (and .cse0 (<= ~send3 127) (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (= 0 (+ ~nomsg 1)) (= ~mode4 (* 256 (div ~mode4 256))) (<= 0 ~send3) .cse1))) [2018-07-25 08:49:20,573 INFO L422 ceAbstractionStarter]: For program point L432(lines 432 439) no Hoare annotation was computed. [2018-07-25 08:49:20,573 INFO L422 ceAbstractionStarter]: For program point L333(lines 327 334) no Hoare annotation was computed. [2018-07-25 08:49:20,573 INFO L422 ceAbstractionStarter]: For program point L358(lines 358 368) no Hoare annotation was computed. [2018-07-25 08:49:20,574 INFO L418 ceAbstractionStarter]: At program point L453(lines 453 460) the Hoare annotation is: (and (<= ULTIMATE.start_assert_~arg 1) (<= ~r1 0) (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode4 1) (<= 1 ULTIMATE.start_assert_~arg) (<= 0 ~r1) (not (= ~p3_old ~nomsg))) [2018-07-25 08:49:20,577 INFO L422 ceAbstractionStarter]: For program point L416(lines 410 417) no Hoare annotation was computed. [2018-07-25 08:49:20,577 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 91 468) the Hoare annotation is: true [2018-07-25 08:49:20,577 INFO L422 ceAbstractionStarter]: For program point L317(lines 317 328) no Hoare annotation was computed. [2018-07-25 08:49:20,577 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 91 468) no Hoare annotation was computed. [2018-07-25 08:49:20,577 INFO L422 ceAbstractionStarter]: For program point L338(lines 338 348) no Hoare annotation was computed. [2018-07-25 08:49:20,578 INFO L422 ceAbstractionStarter]: For program point L396(lines 390 397) no Hoare annotation was computed. [2018-07-25 08:49:20,578 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 91 468) the Hoare annotation is: false [2018-07-25 08:49:20,578 INFO L422 ceAbstractionStarter]: For program point L376(lines 367 377) no Hoare annotation was computed. [2018-07-25 08:49:20,579 INFO L422 ceAbstractionStarter]: For program point L401(lines 401 411) no Hoare annotation was computed. [2018-07-25 08:49:20,579 INFO L418 ceAbstractionStarter]: At program point L459(lines 459 466) the Hoare annotation is: false [2018-07-25 08:49:20,579 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 467) the Hoare annotation is: false [2018-07-25 08:49:20,579 INFO L422 ceAbstractionStarter]: For program point L381(lines 381 391) no Hoare annotation was computed. [2018-07-25 08:49:20,580 INFO L422 ceAbstractionStarter]: For program point L443(lines 438 444) no Hoare annotation was computed. [2018-07-25 08:49:20,597 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:49:20 BoogieIcfgContainer [2018-07-25 08:49:20,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:49:20,598 INFO L168 Benchmark]: Toolchain (without parser) took 2010.21 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-07-25 08:49:20,601 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. [2018-07-25 08:49:20,603 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:49:20,604 INFO L168 Benchmark]: Boogie Preprocessor took 65.20 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. [2018-07-25 08:49:20,605 INFO L168 Benchmark]: RCFGBuilder took 919.20 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. [2018-07-25 08:49:20,606 INFO L168 Benchmark]: TraceAbstraction took 957.72 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 08:49:20,611 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 Procedure Inliner took 60.27 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 65.20 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. * RCFGBuilder took 919.20 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 957.72 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: 467]: 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: 310]: Loop Invariant Derived loop invariant: ((((((((assert_~arg <= 1 && ~r1 <= 0) && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode4 <= 1) && 1 <= assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg)) || (((((((~r1 <= 0 && ~send3 <= 127) && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 <= ~send3) && 0 <= ~r1) - InvariantResult [Line: 459]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 453]: Loop Invariant Derived loop invariant: (((((((assert_~arg <= 1 && ~r1 <= 0) && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode4 <= 1) && 1 <= assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg) - 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, 23 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 102 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 661 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.ufo.BOUNDED-10.pals.c_11.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-49-20-638.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c_11.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-49-20-638.csv Received shutdown request...