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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4eac566 [2018-09-23 19:48:38,886 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-23 19:48:38,888 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-23 19:48:38,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-23 19:48:38,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-23 19:48:38,905 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-23 19:48:38,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-23 19:48:38,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-23 19:48:38,910 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-23 19:48:38,910 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-23 19:48:38,911 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-23 19:48:38,940 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-23 19:48:38,969 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-23 19:48:38,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-23 19:48:38,972 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-23 19:48:38,972 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-23 19:48:38,973 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-23 19:48:38,973 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-23 19:48:38,973 INFO L133 SettingsManager]: * Use SBE=true [2018-09-23 19:48:38,975 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-23 19:48:38,975 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-23 19:48:38,975 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-23 19:48:38,975 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-23 19:48:38,975 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-23 19:48:38,976 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-23 19:48:38,976 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-23 19:48:38,976 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-23 19:48:38,976 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-23 19:48:38,976 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-23 19:48:38,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-23 19:48:38,978 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-23 19:48:38,978 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-23 19:48:38,978 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-23 19:48:38,978 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-23 19:48:38,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:48:38,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-23 19:48:38,979 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-23 19:48:38,979 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-23 19:48:38,979 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-23 19:48:38,981 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-23 19:48:38,981 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-23 19:48:38,981 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-23 19:48:39,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-23 19:48:39,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-23 19:48:39,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-23 19:48:39,075 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-23 19:48:39,075 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-23 19:48:39,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl [2018-09-23 19:48:39,076 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LargeConstant-ForwardSuccess.bpl' [2018-09-23 19:48:39,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-23 19:48:39,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-23 19:48:39,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-23 19:48:39,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-23 19:48:39,135 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-23 19:48:39,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,170 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-23 19:48:39,171 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-23 19:48:39,171 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-23 19:48:39,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-23 19:48:39,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-23 19:48:39,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-23 19:48:39,175 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-23 19:48:39,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... [2018-09-23 19:48:39,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-23 19:48:39,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-23 19:48:39,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-23 19:48:39,200 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-23 19:48:39,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:48:39,280 INFO L130 BoogieDeclarations]: Found specification of procedure proc [2018-09-23 19:48:39,281 INFO L138 BoogieDeclarations]: Found implementation of procedure proc [2018-09-23 19:48:39,470 INFO L351 CfgBuilder]: Using library mode [2018-09-23 19:48:39,471 INFO L202 PluginConnector]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:48:39 BoogieIcfgContainer [2018-09-23 19:48:39,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-23 19:48:39,472 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-23 19:48:39,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-23 19:48:39,476 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-23 19:48:39,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:48:39" (1/2) ... [2018-09-23 19:48:39,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60e156f and model type LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.09 07:48:39, skipping insertion in model container [2018-09-23 19:48:39,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:48:39" (2/2) ... [2018-09-23 19:48:39,481 INFO L112 eAbstractionObserver]: Analyzing ICFG LargeConstant-ForwardSuccess.bpl [2018-09-23 19:48:39,490 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-23 19:48:39,498 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-23 19:48:39,549 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-23 19:48:39,550 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-23 19:48:39,550 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-23 19:48:39,550 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-23 19:48:39,551 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-23 19:48:39,551 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-23 19:48:39,551 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-23 19:48:39,551 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-23 19:48:39,551 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-23 19:48:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-09-23 19:48:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-23 19:48:39,573 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:48:39,574 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-23 19:48:39,575 INFO L423 AbstractCegarLoop]: === Iteration 1 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:48:39,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:48:39,580 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times [2018-09-23 19:48:39,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:48:39,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:48:39,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:39,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:48:39,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:48:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:48:39,740 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:48:39,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-23 19:48:39,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:48:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:48:39,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:48:39,764 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-09-23 19:48:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:48:39,826 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-23 19:48:39,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:48:39,828 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-23 19:48:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:48:39,839 INFO L225 Difference]: With dead ends: 9 [2018-09-23 19:48:39,839 INFO L226 Difference]: Without dead ends: 6 [2018-09-23 19:48:39,844 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:48:39,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-23 19:48:39,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-23 19:48:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-23 19:48:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-23 19:48:39,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3 [2018-09-23 19:48:39,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:48:39,886 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-23 19:48:39,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:48:39,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-23 19:48:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-23 19:48:39,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:48:39,887 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-23 19:48:39,888 INFO L423 AbstractCegarLoop]: === Iteration 2 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:48:39,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:48:39,888 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times [2018-09-23 19:48:39,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:48:39,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:48:39,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:39,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:48:39,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:48:40,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:48:40,014 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:48:40,015 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:48:40,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:48:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:48:40,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:48:40,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:48:40,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:48:40,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2018-09-23 19:48:40,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-23 19:48:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-23 19:48:40,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:48:40,131 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2018-09-23 19:48:40,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:48:40,208 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-23 19:48:40,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-23 19:48:40,209 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2018-09-23 19:48:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:48:40,210 INFO L225 Difference]: With dead ends: 9 [2018-09-23 19:48:40,210 INFO L226 Difference]: Without dead ends: 8 [2018-09-23 19:48:40,211 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-23 19:48:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-23 19:48:40,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-23 19:48:40,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-23 19:48:40,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-23 19:48:40,214 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2018-09-23 19:48:40,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:48:40,214 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-23 19:48:40,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-23 19:48:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-23 19:48:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-23 19:48:40,215 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:48:40,215 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1] [2018-09-23 19:48:40,216 INFO L423 AbstractCegarLoop]: === Iteration 3 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:48:40,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:48:40,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times [2018-09-23 19:48:40,216 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:48:40,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:48:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:40,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:48:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:48:40,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:48:40,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:48:40,306 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:48:40,317 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:48:40,334 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:48:40,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:48:40,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:48:40,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:48:40,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:48:40,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-23 19:48:40,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-23 19:48:40,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-23 19:48:40,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:48:40,364 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-09-23 19:48:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:48:40,397 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-23 19:48:40,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 19:48:40,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2018-09-23 19:48:40,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:48:40,398 INFO L225 Difference]: With dead ends: 11 [2018-09-23 19:48:40,398 INFO L226 Difference]: Without dead ends: 10 [2018-09-23 19:48:40,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:48:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-23 19:48:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-23 19:48:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-23 19:48:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-23 19:48:40,402 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-09-23 19:48:40,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:48:40,402 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-23 19:48:40,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-23 19:48:40,403 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-23 19:48:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-23 19:48:40,403 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:48:40,403 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1] [2018-09-23 19:48:40,404 INFO L423 AbstractCegarLoop]: === Iteration 4 === [procErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:48:40,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:48:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times [2018-09-23 19:48:40,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:48:40,405 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:48:40,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:40,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:48:40,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:48:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:48:40,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:48:40,520 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:48:40,520 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:48:40,539 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:48:40,556 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-09-23 19:48:40,556 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:48:40,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:48:40,593 INFO L682 Elim1Store]: detected equality via solver [2018-09-23 19:48:40,599 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-09-23 19:48:40,601 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-23 19:48:40,635 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-23 19:48:40,635 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:3 [2018-09-23 19:48:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-23 19:48:40,726 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-23 19:48:40,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2018-09-23 19:48:40,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-23 19:48:40,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-23 19:48:40,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:48:40,728 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2018-09-23 19:48:40,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:48:40,743 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-09-23 19:48:40,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-23 19:48:40,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2018-09-23 19:48:40,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:48:40,744 INFO L225 Difference]: With dead ends: 12 [2018-09-23 19:48:40,744 INFO L226 Difference]: Without dead ends: 0 [2018-09-23 19:48:40,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:48:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-23 19:48:40,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-23 19:48:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-23 19:48:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-23 19:48:40,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-09-23 19:48:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:48:40,746 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-23 19:48:40,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-23 19:48:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-23 19:48:40,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-23 19:48:40,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-23 19:48:40,862 INFO L426 ceAbstractionStarter]: For program point procErr0ASSERT_VIOLATIONASSERT(line 18) no Hoare annotation was computed. [2018-09-23 19:48:40,863 INFO L422 ceAbstractionStarter]: At program point L17-1(lines 12 25) the Hoare annotation is: (<= proc_i 999) [2018-09-23 19:48:40,863 INFO L426 ceAbstractionStarter]: For program point procEXIT(lines 12 25) no Hoare annotation was computed. [2018-09-23 19:48:40,863 INFO L426 ceAbstractionStarter]: For program point procENTRY(lines 12 25) no Hoare annotation was computed. [2018-09-23 19:48:40,863 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-23 19:48:40,874 INFO L202 PluginConnector]: Adding new model LargeConstant-ForwardSuccess.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.09 07:48:40 BoogieIcfgContainer [2018-09-23 19:48:40,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-23 19:48:40,875 INFO L168 Benchmark]: Toolchain (without parser) took 1743.23 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-09-23 19:48:40,877 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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. [2018-09-23 19:48:40,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.77 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. [2018-09-23 19:48:40,878 INFO L168 Benchmark]: Boogie Preprocessor took 25.13 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. [2018-09-23 19:48:40,879 INFO L168 Benchmark]: RCFGBuilder took 271.87 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-23 19:48:40,880 INFO L168 Benchmark]: TraceAbstraction took 1401.58 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. [2018-09-23 19:48:40,884 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 0.18 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 38.77 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 25.13 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 271.87 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1401.58 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: 76.7 MB). Peak memory consumption was 76.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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: 12]: Loop Invariant Derived loop invariant: i <= 999 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 13 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 45 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 612 SizeOfPredicates, 2 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 12/40 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/LargeConstant-ForwardSuccess.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-23_19-48-40-896.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LargeConstant-ForwardSuccess.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-23_19-48-40-896.csv Received shutdown request...