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-b2fde6a [2018-09-28 10:17:27,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:17:27,109 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:17:27,131 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:17:27,132 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:17:27,133 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:17:27,134 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:17:27,136 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:17:27,137 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:17:27,138 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:17:27,139 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-28 10:17:27,163 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 [2018-09-28 10:17:27,178 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:17:27,178 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:17:27,179 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:17:27,179 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:17:27,180 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:17:27,180 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:17:27,180 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:17:27,181 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:17:27,181 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:17:27,181 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:17:27,181 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:17:27,181 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:17:27,182 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:17:27,182 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:17:27,182 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:17:27,182 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:17:27,182 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:17:27,183 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:17:27,183 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:17:27,183 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:17:27,183 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:17:27,183 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:17:27,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:17:27,184 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:17:27,184 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:17:27,184 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:17:27,184 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:17:27,185 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:17:27,185 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:17:27,185 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:17:27,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:17:27,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:17:27,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:17:27,279 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:17:27,279 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:17:27,281 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl [2018-09-28 10:17:27,282 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/ValueTerminatedArrayIteration01.bpl' [2018-09-28 10:17:27,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:17:27,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:17:27,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:17:27,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:17:27,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:17:27,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,382 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-28 10:17:27,382 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-28 10:17:27,383 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-28 10:17:27,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:17:27,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:17:27,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:17:27,386 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:17:27,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/1) ... [2018-09-28 10:17:27,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:17:27,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:17:27,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:17:27,414 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:17:27,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (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 [2018-09-28 10:17:27,496 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-28 10:17:27,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-28 10:17:27,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-28 10:17:27,717 INFO L350 CfgBuilder]: Using library mode [2018-09-28 10:17:27,718 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:17:27 BoogieIcfgContainer [2018-09-28 10:17:27,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:17:27,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:17:27,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:17:27,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:17:27,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:17:27" (1/2) ... [2018-09-28 10:17:27,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b70ae2e and model type ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:17:27, skipping insertion in model container [2018-09-28 10:17:27,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:17:27" (2/2) ... [2018-09-28 10:17:27,733 INFO L112 eAbstractionObserver]: Analyzing ICFG ValueTerminatedArrayIteration01.bpl [2018-09-28 10:17:27,742 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:17:27,749 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 10:17:27,797 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:17:27,798 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:17:27,798 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:17:27,798 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:17:27,799 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:17:27,799 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:17:27,799 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:17:27,799 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:17:27,799 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:17:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-28 10:17:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-28 10:17:27,822 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:17:27,827 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-28 10:17:27,828 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:17:27,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:17:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-09-28 10:17:27,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:17:27,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:17:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:17:27,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:17:27,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:17:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:17:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:17:28,036 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:17:28,037 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-28 10:17:28,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:17:28,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:17:28,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-28 10:17:28,057 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-28 10:17:28,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:17:28,153 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-28 10:17:28,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:17:28,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-28 10:17:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:17:28,171 INFO L225 Difference]: With dead ends: 9 [2018-09-28 10:17:28,171 INFO L226 Difference]: Without dead ends: 5 [2018-09-28 10:17:28,176 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 [2018-09-28 10:17:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-28 10:17:28,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-28 10:17:28,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-28 10:17:28,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-28 10:17:28,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-28 10:17:28,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:17:28,223 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-28 10:17:28,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:17:28,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-28 10:17:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-28 10:17:28,224 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:17:28,224 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-28 10:17:28,225 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:17:28,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:17:28,225 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-09-28 10:17:28,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:17:28,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:17:28,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:17:28,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:17:28,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:17:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:17:28,441 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-09-28 10:17:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:17:28,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:17:28,469 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 [2018-09-28 10:17:28,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:17:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:17:28,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:17:28,579 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 [2018-09-28 10:17:28,581 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-28 10:17:28,681 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-28 10:17:28,682 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-09-28 10:17:28,854 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 [2018-09-28 10:17:28,855 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-28 10:17:28,925 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-28 10:17:28,926 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:21 [2018-09-28 10:17:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:17:29,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:17:29,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-09-28 10:17:29,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-28 10:17:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-28 10:17:29,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-09-28 10:17:29,113 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 6 states. [2018-09-28 10:17:29,441 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-09-28 10:17:29,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:17:29,505 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-28 10:17:29,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:17:29,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2018-09-28 10:17:29,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:17:29,506 INFO L225 Difference]: With dead ends: 10 [2018-09-28 10:17:29,506 INFO L226 Difference]: Without dead ends: 7 [2018-09-28 10:17:29,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-09-28 10:17:29,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-28 10:17:29,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-28 10:17:29,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-28 10:17:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-28 10:17:29,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-28 10:17:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:17:29,512 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-28 10:17:29,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-28 10:17:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-28 10:17:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-28 10:17:29,513 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:17:29,513 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-28 10:17:29,513 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:17:29,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-28 10:17:29,514 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 2 times [2018-09-28 10:17:29,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:17:29,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:17:29,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:17:29,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:17:29,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:17:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:17:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-28 10:17:29,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:17:29,792 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 [2018-09-28 10:17:29,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:17:29,850 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:17:29,850 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:17:29,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:17:29,869 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 [2018-09-28 10:17:29,869 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-28 10:17:29,880 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-28 10:17:29,881 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-09-28 10:17:30,102 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 [2018-09-28 10:17:30,112 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 8 xjuncts. [2018-09-28 10:17:30,220 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-28 10:17:30,220 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:69 [2018-09-28 10:17:30,592 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 9 [2018-09-28 10:17:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:17:30,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:17:30,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2018-09-28 10:17:30,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-28 10:17:30,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-28 10:17:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2018-09-28 10:17:30,633 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 9 states. [2018-09-28 10:17:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:17:30,751 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-28 10:17:30,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:17:30,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 6 [2018-09-28 10:17:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:17:30,755 INFO L225 Difference]: With dead ends: 9 [2018-09-28 10:17:30,755 INFO L226 Difference]: Without dead ends: 0 [2018-09-28 10:17:30,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2018-09-28 10:17:30,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-28 10:17:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-28 10:17:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-28 10:17:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-28 10:17:30,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-09-28 10:17:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:17:30,757 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-28 10:17:30,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-28 10:17:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-28 10:17:30,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-28 10:17:30,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-28 10:17:30,828 INFO L422 ceAbstractionStarter]: At program point L17-1(lines 17 19) the Hoare annotation is: (and (< i (+ end 1)) (= 42 (select a end))) [2018-09-28 10:17:30,828 INFO L426 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 20) no Hoare annotation was computed. [2018-09-28 10:17:30,828 INFO L426 ceAbstractionStarter]: For program point mainENTRY(lines 11 21) no Hoare annotation was computed. [2018-09-28 10:17:30,829 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-09-28 10:17:30,829 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-09-28 10:17:30,829 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-28 10:17:30,838 INFO L202 PluginConnector]: Adding new model ValueTerminatedArrayIteration01.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 10:17:30 BoogieIcfgContainer [2018-09-28 10:17:30,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 10:17:30,839 INFO L168 Benchmark]: Toolchain (without parser) took 3504.09 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. [2018-09-28 10:17:30,840 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.30 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. [2018-09-28 10:17:30,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.56 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. [2018-09-28 10:17:30,841 INFO L168 Benchmark]: Boogie Preprocessor took 27.23 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. [2018-09-28 10:17:30,842 INFO L168 Benchmark]: RCFGBuilder took 304.98 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. [2018-09-28 10:17:30,843 INFO L168 Benchmark]: TraceAbstraction took 3118.43 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. [2018-09-28 10:17:30,846 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 0.30 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 47.56 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 27.23 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 304.98 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 3118.43 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: 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, 3.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6 SDtfs, 5 SDslu, 0 SDs, 0 SdLazy, 32 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s 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, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s 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-0-2018-09-28_10-17-30-859.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/ValueTerminatedArrayIteration01.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-28_10-17-30-859.csv Received shutdown request...