java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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/jm2006.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:16:35,670 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:16:35,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:16:35,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:16:35,686 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:16:35,687 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:16:35,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:16:35,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:16:35,692 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:16:35,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:16:35,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 08:16:35,697 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 08:16:35,700 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 08:16:35,701 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 08:16:35,702 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 08:16:35,704 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 08:16:35,705 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 08:16:35,709 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 08:16:35,712 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 08:16:35,719 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 08:16:35,720 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 08:16:35,726 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 08:16:35,729 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 08:16:35,730 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 08:16:35,730 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 08:16:35,731 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 08:16:35,732 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 08:16:35,733 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 08:16:35,734 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 08:16:35,735 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 08:16:35,735 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 08:16:35,735 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-26 08:16:35,736 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-26 08:16:35,736 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-26 08:16:35,737 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-26 08:16:35,738 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-26 08:16:35,738 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-09-26 08:16:35,746 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:16:35,746 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:16:35,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 08:16:35,748 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 08:16:35,748 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:16:35,748 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-09-26 08:16:35,748 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 08:16:35,749 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:16:35,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:16:35,809 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:16:35,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:16:35,814 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:16:35,815 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:16:35,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jm2006.c.i_3.bpl [2018-09-26 08:16:35,815 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/jm2006.c.i_3.bpl' [2018-09-26 08:16:35,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:16:35,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:16:35,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:16:35,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:16:35,872 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:16:35,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:16:35,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:16:35,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:16:35,917 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:16:35,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:35,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:16:35,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:16:35,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:16:35,941 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:16:35,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/1) ... [2018-09-26 08:16:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 08:16:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 08:16:36,208 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 08:16:36,209 INFO L202 PluginConnector]: Adding new model jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:16:36 BoogieIcfgContainer [2018-09-26 08:16:36,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:16:36,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:16:36,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:16:36,215 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:16:36,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:16:35" (1/2) ... [2018-09-26 08:16:36,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e606f9 and model type jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:16:36, skipping insertion in model container [2018-09-26 08:16:36,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:16:36" (2/2) ... [2018-09-26 08:16:36,220 INFO L112 eAbstractionObserver]: Analyzing ICFG jm2006.c.i_3.bpl [2018-09-26 08:16:36,231 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:16:36,240 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:16:36,288 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:16:36,289 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:16:36,289 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:16:36,289 INFO L383 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-09-26 08:16:36,289 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:16:36,290 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:16:36,290 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:16:36,290 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:16:36,290 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:16:36,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 08:16:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:16:36,317 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:16:36,318 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:16:36,320 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:16:36,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:16:36,327 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-26 08:16:36,334 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:16:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:16:36,700 WARN L178 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 20 [2018-09-26 08:16:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:16:36,707 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:16:36,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 08:16:36,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 08:16:36,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 08:16:36,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 08:16:36,732 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 08:16:36,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:16:36,765 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 08:16:36,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 08:16:36,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 08:16:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:16:36,793 INFO L225 Difference]: With dead ends: 10 [2018-09-26 08:16:36,793 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 08:16:36,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 08:16:36,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 08:16:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 08:16:36,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 08:16:36,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 08:16:36,838 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 08:16:36,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:16:36,839 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 08:16:36,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 08:16:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 08:16:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 08:16:36,840 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:16:36,840 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 08:16:36,840 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:16:36,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:16:36,841 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-26 08:16:36,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:16:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:16:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:16:36,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:16:36,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-09-26 08:16:36,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 08:16:36,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 08:16:36,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:16:36,955 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-09-26 08:16:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:16:36,987 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-26 08:16:36,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 08:16:36,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-26 08:16:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:16:36,988 INFO L225 Difference]: With dead ends: 11 [2018-09-26 08:16:36,989 INFO L226 Difference]: Without dead ends: 9 [2018-09-26 08:16:36,990 INFO L605 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 [2018-09-26 08:16:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-26 08:16:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-26 08:16:36,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 08:16:36,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-26 08:16:36,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-26 08:16:36,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:16:36,996 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-26 08:16:36,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 08:16:36,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-26 08:16:36,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 08:16:36,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:16:36,998 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-26 08:16:36,998 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:16:36,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:16:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-09-26 08:16:36,999 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:16:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:16:37,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:16:37,098 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:16:37,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-09-26 08:16:37,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 08:16:37,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 08:16:37,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:16:37,103 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-09-26 08:16:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:16:37,134 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-26 08:16:37,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 08:16:37,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-09-26 08:16:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:16:37,135 INFO L225 Difference]: With dead ends: 13 [2018-09-26 08:16:37,136 INFO L226 Difference]: Without dead ends: 11 [2018-09-26 08:16:37,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:16:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-26 08:16:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-26 08:16:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-26 08:16:37,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-26 08:16:37,143 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-26 08:16:37,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:16:37,144 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-26 08:16:37,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 08:16:37,144 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-26 08:16:37,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 08:16:37,145 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:16:37,145 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-26 08:16:37,145 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:16:37,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:16:37,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-09-26 08:16:37,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:16:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:16:37,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:16:37,235 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:16:37,235 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-09-26 08:16:37,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 08:16:37,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 08:16:37,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:16:37,237 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-09-26 08:16:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:16:37,252 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-26 08:16:37,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 08:16:37,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-09-26 08:16:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:16:37,254 INFO L225 Difference]: With dead ends: 11 [2018-09-26 08:16:37,254 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 08:16:37,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:16:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 08:16:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 08:16:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 08:16:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 08:16:37,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-09-26 08:16:37,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:16:37,256 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 08:16:37,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 08:16:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 08:16:37,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 08:16:37,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 08:16:37,348 INFO L422 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 54) the Hoare annotation is: false [2018-09-26 08:16:37,350 INFO L422 ceAbstractionStarter]: At program point L31(lines 31 43) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (.cse0 (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-09-26 08:16:37,350 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 54) the Hoare annotation is: true [2018-09-26 08:16:37,350 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 54) no Hoare annotation was computed. [2018-09-26 08:16:37,350 INFO L422 ceAbstractionStarter]: At program point L51(lines 28 51) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~i~5 ULTIMATE.start_main_~y~5)) (.cse0 (+ ULTIMATE.start_main_~j~5 ULTIMATE.start_main_~x~5))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-09-26 08:16:37,351 INFO L422 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 53) the Hoare annotation is: false [2018-09-26 08:16:37,351 INFO L422 ceAbstractionStarter]: At program point L42(lines 42 52) the Hoare annotation is: false [2018-09-26 08:16:37,369 INFO L202 PluginConnector]: Adding new model jm2006.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 08:16:37 BoogieIcfgContainer [2018-09-26 08:16:37,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 08:16:37,371 INFO L168 Benchmark]: Toolchain (without parser) took 1501.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-09-26 08:16:37,372 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 08:16:37,373 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.73 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. [2018-09-26 08:16:37,374 INFO L168 Benchmark]: Boogie Preprocessor took 23.00 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. [2018-09-26 08:16:37,375 INFO L168 Benchmark]: RCFGBuilder took 269.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-26 08:16:37,376 INFO L168 Benchmark]: TraceAbstraction took 1158.73 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. [2018-09-26 08:16:37,380 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.73 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 23.00 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 269.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1158.73 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: 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: 31]: Loop Invariant Derived loop invariant: main_~j~5 + main_~x~5 <= main_~i~5 + main_~y~5 && main_~i~5 + main_~y~5 <= main_~j~5 + main_~x~5 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: main_~j~5 + main_~x~5 <= main_~i~5 + main_~y~5 && main_~i~5 + main_~y~5 <= main_~j~5 + main_~x~5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 14 SDs, 0 SdLazy, 27 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 12 NumberOfFragments, 34 HoareAnnotationTreeSize, 6 FomulaSimplifications, 134 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2454 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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/jm2006.c.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_08-16-37-397.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/jm2006.c.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_08-16-37-397.csv Received shutdown request...