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_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/INT_add_vs_inc.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:18:32,911 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:18:32,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:18:32,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:18:32,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:18:32,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:18:32,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:18:32,930 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:18:32,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:18:32,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:18:32,934 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:18:32,956 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:18:32,974 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:18:32,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:18:32,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:18:32,975 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:18:32,976 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:18:32,976 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:18:32,976 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:18:32,976 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:18:32,976 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:18:32,977 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:18:32,977 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:18:32,977 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:18:32,977 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:18:32,977 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:18:32,978 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:18:32,978 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:18:32,978 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:18:32,978 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:18:32,978 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:18:32,979 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:18:32,979 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:18:32,979 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:18:32,979 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:18:32,979 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:18:32,980 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:18:32,980 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:18:32,980 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:18:32,980 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:18:32,980 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:18:32,981 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:18:32,981 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:18:33,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:18:33,041 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:18:33,046 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:18:33,048 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:18:33,048 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:18:33,049 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/INT_add_vs_inc.bpl [2018-10-02 12:18:33,049 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/INT_add_vs_inc.bpl' [2018-10-02 12:18:33,101 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:18:33,106 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:18:33,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:18:33,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:18:33,107 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:18:33,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,148 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:18:33,149 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:18:33,149 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:18:33,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:18:33,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:18:33,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:18:33,153 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:18:33,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/1) ... [2018-10-02 12:18:33,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:18:33,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:18:33,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:18:33,179 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:18:33,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (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 [2018-10-02 12:18:33,252 INFO L124 BoogieDeclarations]: Specification and implementation of procedure add given in one single declaration [2018-10-02 12:18:33,253 INFO L130 BoogieDeclarations]: Found specification of procedure add [2018-10-02 12:18:33,253 INFO L138 BoogieDeclarations]: Found implementation of procedure add [2018-10-02 12:18:33,462 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:18:33,463 INFO L202 PluginConnector]: Adding new model INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:18:33 BoogieIcfgContainer [2018-10-02 12:18:33,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:18:33,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:18:33,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:18:33,473 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:18:33,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:18:33" (1/2) ... [2018-10-02 12:18:33,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad7c196 and model type INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:18:33, skipping insertion in model container [2018-10-02 12:18:33,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:18:33" (2/2) ... [2018-10-02 12:18:33,476 INFO L112 eAbstractionObserver]: Analyzing ICFG INT_add_vs_inc.bpl [2018-10-02 12:18:33,488 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:18:33,496 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:18:33,555 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:18:33,556 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:18:33,556 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:18:33,556 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:18:33,556 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:18:33,556 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:18:33,557 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:18:33,557 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:18:33,557 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:18:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-02 12:18:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-02 12:18:33,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:33,591 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-02 12:18:33,592 INFO L423 AbstractCegarLoop]: === Iteration 1 === [addErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:33,600 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:33,601 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-10-02 12:18:33,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:33,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:33,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:33,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:33,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:33,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:18:33,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:18:33,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 12:18:33,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 12:18:33,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:33,890 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-10-02 12:18:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:34,163 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 12:18:34,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:18:34,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-10-02 12:18:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:34,188 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:18:34,191 INFO L226 Difference]: Without dead ends: 5 [2018-10-02 12:18:34,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:18:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-02 12:18:34,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-02 12:18:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-02 12:18:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-02 12:18:34,232 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-02 12:18:34,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:34,233 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-02 12:18:34,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 12:18:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-02 12:18:34,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:18:34,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:34,233 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:18:34,234 INFO L423 AbstractCegarLoop]: === Iteration 2 === [addErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:34,234 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:34,234 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-10-02 12:18:34,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:34,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:34,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:34,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:34,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:34,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:34,388 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 [2018-10-02 12:18:34,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:34,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:34,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:34,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2018-10-02 12:18:34,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:18:34,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:18:34,553 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:34,553 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 7 states. [2018-10-02 12:18:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:35,086 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-02 12:18:35,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:18:35,087 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 4 [2018-10-02 12:18:35,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:35,088 INFO L225 Difference]: With dead ends: 8 [2018-10-02 12:18:35,088 INFO L226 Difference]: Without dead ends: 6 [2018-10-02 12:18:35,089 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:18:35,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-02 12:18:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-02 12:18:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-02 12:18:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-02 12:18:35,093 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-02 12:18:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:35,093 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-02 12:18:35,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:18:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-02 12:18:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:18:35,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:18:35,094 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-02 12:18:35,095 INFO L423 AbstractCegarLoop]: === Iteration 3 === [addErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:18:35,095 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:18:35,095 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2018-10-02 12:18:35,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:18:35,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:18:35,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:35,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:18:35,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:18:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:18:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:35,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:18:35,227 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 [2018-10-02 12:18:35,240 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:18:35,280 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:18:35,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:18:35,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:18:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:18:35,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:18:35,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-02 12:18:35,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:18:35,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:18:35,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:18:35,473 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 9 states. [2018-10-02 12:18:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:18:36,097 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2018-10-02 12:18:36,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:18:36,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 5 [2018-10-02 12:18:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:18:36,098 INFO L225 Difference]: With dead ends: 8 [2018-10-02 12:18:36,098 INFO L226 Difference]: Without dead ends: 0 [2018-10-02 12:18:36,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:18:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-02 12:18:36,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-02 12:18:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-02 12:18:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-02 12:18:36,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-10-02 12:18:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:18:36,100 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-02 12:18:36,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:18:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-02 12:18:36,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-02 12:18:36,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-02 12:18:36,257 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 10 [2018-10-02 12:18:36,261 INFO L425 ceAbstractionStarter]: For program point addEXIT(lines 8 24) no Hoare annotation was computed. [2018-10-02 12:18:36,262 INFO L421 ceAbstractionStarter]: At program point L17-1(lines 17 21) the Hoare annotation is: (let ((.cse0 (+ add_x add_y0)) (.cse1 (+ add_y add_result))) (and (<= add_result .cse0) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2018-10-02 12:18:36,262 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-10-02 12:18:36,262 INFO L425 ceAbstractionStarter]: For program point addENTRY(lines 8 24) no Hoare annotation was computed. [2018-10-02 12:18:36,262 INFO L425 ceAbstractionStarter]: For program point addErr0ASSERT_VIOLATIONASSERT(line 23) no Hoare annotation was computed. [2018-10-02 12:18:36,262 INFO L425 ceAbstractionStarter]: For program point addFINAL(lines 8 24) no Hoare annotation was computed. [2018-10-02 12:18:36,273 INFO L202 PluginConnector]: Adding new model INT_add_vs_inc.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:18:36 BoogieIcfgContainer [2018-10-02 12:18:36,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:18:36,274 INFO L168 Benchmark]: Toolchain (without parser) took 3172.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-10-02 12:18:36,276 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 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. [2018-10-02 12:18:36,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.32 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. [2018-10-02 12:18:36,277 INFO L168 Benchmark]: Boogie Preprocessor took 25.44 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. [2018-10-02 12:18:36,278 INFO L168 Benchmark]: RCFGBuilder took 285.30 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-02 12:18:36,279 INFO L168 Benchmark]: TraceAbstraction took 2808.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-10-02 12:18:36,284 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 0.21 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 45.32 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 25.44 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 285.30 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2808.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: 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: 17]: Loop Invariant Derived loop invariant: (result <= x + y0 && y + result <= x + y0) && x + y0 <= y + result - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 2.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 12 SDslu, 2 SDs, 0 SdLazy, 46 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 20 HoareAnnotationTreeSize, 1 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 850 SizeOfPredicates, 2 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/INT_add_vs_inc.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-18-36-297.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/INT_add_vs_inc.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-18-36-297.csv Received shutdown request...