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/ValueTerminatedArrayIteration01.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4eac566 [2018-09-23 19:52:42,648 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-23 19:52:42,650 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-23 19:52:42,662 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-23 19:52:42,696 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 19:52:42,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-23 19:52:42,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-23 19:52:42,724 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-23 19:52:42,724 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-23 19:52:42,725 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-23 19:52:42,725 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-23 19:52:42,725 INFO L133 SettingsManager]: * Use SBE=true [2018-09-23 19:52:42,725 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-23 19:52:42,725 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-23 19:52:42,726 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-23 19:52:42,726 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-23 19:52:42,726 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-23 19:52:42,726 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-23 19:52:42,726 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-23 19:52:42,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-23 19:52:42,727 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-23 19:52:42,727 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-23 19:52:42,727 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-23 19:52:42,727 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-23 19:52:42,728 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-23 19:52:42,728 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-23 19:52:42,728 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-23 19:52:42,728 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:52:42,728 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-23 19:52:42,729 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-23 19:52:42,729 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-23 19:52:42,729 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-23 19:52:42,729 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-23 19:52:42,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-23 19:52:42,729 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-23 19:52:42,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-23 19:52:42,804 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-23 19:52:42,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-23 19:52:42,812 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-23 19:52:42,813 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-23 19:52:42,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl [2018-09-23 19:52:42,815 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl' [2018-09-23 19:52:42,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-23 19:52:42,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-23 19:52:42,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-23 19:52:42,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-23 19:52:42,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-23 19:52:42,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,902 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-23 19:52:42,902 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-23 19:52:42,902 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-23 19:52:42,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-23 19:52:42,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-23 19:52:42,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-23 19:52:42,906 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-23 19:52:42,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/1) ... [2018-09-23 19:52:42,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-23 19:52:42,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-23 19:52:42,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-23 19:52:42,930 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-23 19:52:42,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (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 19:52:43,003 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-23 19:52:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-23 19:52:43,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-23 19:52:43,222 INFO L351 CfgBuilder]: Using library mode [2018-09-23 19:52:43,223 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:52:43 BoogieIcfgContainer [2018-09-23 19:52:43,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-23 19:52:43,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-23 19:52:43,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-23 19:52:43,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-23 19:52:43,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:52:42" (1/2) ... [2018-09-23 19:52:43,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d8bf87b and model type ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.09 07:52:43, skipping insertion in model container [2018-09-23 19:52:43,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:52:43" (2/2) ... [2018-09-23 19:52:43,243 INFO L112 eAbstractionObserver]: Analyzing ICFG ValueTerminatedArrayIteration01.bpl [2018-09-23 19:52:43,253 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-23 19:52:43,263 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-23 19:52:43,320 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-23 19:52:43,321 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-23 19:52:43,321 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-23 19:52:43,321 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-23 19:52:43,321 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-23 19:52:43,322 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-23 19:52:43,322 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-23 19:52:43,322 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-23 19:52:43,322 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-23 19:52:43,342 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-23 19:52:43,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-23 19:52:43,356 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:52:43,357 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-23 19:52:43,358 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:52:43,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:52:43,366 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-09-23 19:52:43,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:52:43,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:52:43,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:52:43,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:52:43,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:52:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:52:43,530 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 19:52:43,532 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:52:43,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-23 19:52:43,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:52:43,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:52:43,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:52:43,551 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-23 19:52:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:52:43,636 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-23 19:52:43,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:52:43,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-23 19:52:43,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:52:43,651 INFO L225 Difference]: With dead ends: 9 [2018-09-23 19:52:43,651 INFO L226 Difference]: Without dead ends: 5 [2018-09-23 19:52:43,656 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 19:52:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-23 19:52:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-23 19:52:43,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-23 19:52:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-23 19:52:43,704 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-23 19:52:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:52:43,705 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-23 19:52:43,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:52:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-23 19:52:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-23 19:52:43,706 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:52:43,706 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-23 19:52:43,706 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:52:43,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:52:43,707 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-09-23 19:52:43,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:52:43,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:52:43,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:52:43,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:52:43,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:52:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:52:44,027 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-09-23 19:52:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:52:44,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:52:44,038 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 19:52:44,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:52:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:52:44,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:52:44,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-09-23 19:52:44,143 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-23 19:52:44,191 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-23 19:52:44,192 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-09-23 19:52:44,232 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2018-09-23 19:52:44,233 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-23 19:52:44,253 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 19:52:44,254 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:21 [2018-09-23 19:52:44,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:52:44,371 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:52:44,372 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-09-23 19:52:44,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-23 19:52:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-23 19:52:44,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-23 19:52:44,374 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2018-09-23 19:52:44,677 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-09-23 19:52:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:52:44,745 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-23 19:52:44,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-23 19:52:44,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2018-09-23 19:52:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:52:44,746 INFO L225 Difference]: With dead ends: 10 [2018-09-23 19:52:44,746 INFO L226 Difference]: Without dead ends: 7 [2018-09-23 19:52:44,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:52:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-23 19:52:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-23 19:52:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-23 19:52:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-23 19:52:44,751 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-23 19:52:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:52:44,751 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-23 19:52:44,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-23 19:52:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-23 19:52:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-23 19:52:44,752 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:52:44,753 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-23 19:52:44,754 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:52:44,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:52:44,754 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 2 times [2018-09-23 19:52:44,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:52:44,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:52:44,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:52:44,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:52:44,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:52:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:52:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-23 19:52:45,006 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:52:45,007 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 19:52:45,016 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:52:45,030 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:52:45,031 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:52:45,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:52:45,049 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-09-23 19:52:45,050 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-23 19:52:45,066 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-23 19:52:45,066 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-09-23 19:52:45,294 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 49 [2018-09-23 19:52:45,303 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 8 xjuncts. [2018-09-23 19:52:45,489 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-23 19:52:45,490 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:69 [2018-09-23 19:52:45,590 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 19:52:45,612 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:52:45,613 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2018-09-23 19:52:45,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-23 19:52:45,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-23 19:52:45,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-09-23 19:52:45,614 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2018-09-23 19:52:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:52:45,697 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-23 19:52:45,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-23 19:52:45,698 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2018-09-23 19:52:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:52:45,698 INFO L225 Difference]: With dead ends: 9 [2018-09-23 19:52:45,698 INFO L226 Difference]: Without dead ends: 0 [2018-09-23 19:52:45,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2018-09-23 19:52:45,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-23 19:52:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-23 19:52:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-23 19:52:45,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-23 19:52:45,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-09-23 19:52:45,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:52:45,701 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-23 19:52:45,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-23 19:52:45,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-23 19:52:45,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-23 19:52:45,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-23 19:52:45,913 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 10 [2018-09-23 19:52:45,918 INFO L422 ceAbstractionStarter]: At program point L17-1(lines 17 19) the Hoare annotation is: (and (< i (+ end 1)) (= 42 (select a end))) [2018-09-23 19:52:45,918 INFO L426 ceAbstractionStarter]: For program point mainENTRY(lines 11 21) no Hoare annotation was computed. [2018-09-23 19:52:45,918 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-09-23 19:52:45,918 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-09-23 19:52:45,919 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-23 19:52:45,919 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 20) no Hoare annotation was computed. [2018-09-23 19:52:45,932 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.09 07:52:45 BoogieIcfgContainer [2018-09-23 19:52:45,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-23 19:52:45,934 INFO L168 Benchmark]: Toolchain (without parser) took 3071.52 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. [2018-09-23 19:52:45,935 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:52:45,936 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.53 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 19:52:45,937 INFO L168 Benchmark]: Boogie Preprocessor took 23.59 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 19:52:45,938 INFO L168 Benchmark]: RCFGBuilder took 293.37 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 19:52:45,939 INFO L168 Benchmark]: TraceAbstraction took 2708.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-09-23 19:52:45,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.53 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 23.59 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 293.37 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 2708.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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: 20]: 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: i < end + 1 && 42 == a[end] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 32 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 5 NumberOfFragments, 11 HoareAnnotationTreeSize, 1 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 18 ConstructedInterpolants, 2 QuantifiedInterpolants, 859 SizeOfPredicates, 2 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/14 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/ValueTerminatedArrayIteration01.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-23_19-52-45-965.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ValueTerminatedArrayIteration01.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-23_19-52-45-965.csv Received shutdown request...