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/HiddenInequality.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 11:52:24,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 11:52:24,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 11:52:24,341 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 11:52:24,344 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 11:52:24,345 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 11:52:24,346 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 11:52:24,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 11:52:24,349 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 11:52:24,350 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 11:52:24,351 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 11:52:24,375 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 [2018-10-02 11:52:24,390 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 11:52:24,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 11:52:24,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 11:52:24,392 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 11:52:24,392 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 11:52:24,392 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 11:52:24,393 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 11:52:24,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 11:52:24,393 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 11:52:24,393 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 11:52:24,393 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 11:52:24,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 11:52:24,394 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 11:52:24,394 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 11:52:24,394 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 11:52:24,394 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 11:52:24,395 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 11:52:24,395 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 11:52:24,395 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 11:52:24,395 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 11:52:24,395 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 11:52:24,396 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 11:52:24,396 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 11:52:24,396 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 11:52:24,396 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 11:52:24,396 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 11:52:24,397 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 11:52:24,397 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 11:52:24,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 11:52:24,397 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 11:52:24,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 11:52:24,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 11:52:24,456 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 11:52:24,458 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 11:52:24,458 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 11:52:24,459 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenInequality.bpl [2018-10-02 11:52:24,459 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HiddenInequality.bpl' [2018-10-02 11:52:24,500 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 11:52:24,503 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 11:52:24,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 11:52:24,504 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 11:52:24,504 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 11:52:24,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 11:52:24,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 11:52:24,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 11:52:24,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 11:52:24,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/1) ... [2018-10-02 11:52:24,569 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 11:52:24,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 11:52:24,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 11:52:24,570 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 11:52:24,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (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 11:52:24,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-02 11:52:24,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-02 11:52:24,847 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-02 11:52:24,848 INFO L202 PluginConnector]: Adding new model HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:52:24 BoogieIcfgContainer [2018-10-02 11:52:24,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 11:52:24,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 11:52:24,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 11:52:24,856 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 11:52:24,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 11:52:24" (1/2) ... [2018-10-02 11:52:24,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee00a99 and model type HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 11:52:24, skipping insertion in model container [2018-10-02 11:52:24,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 11:52:24" (2/2) ... [2018-10-02 11:52:24,860 INFO L112 eAbstractionObserver]: Analyzing ICFG HiddenInequality.bpl [2018-10-02 11:52:24,871 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 11:52:24,884 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 11:52:24,944 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 11:52:24,945 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 11:52:24,945 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 11:52:24,945 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 11:52:24,946 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 11:52:24,946 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 11:52:24,946 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 11:52:24,946 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 11:52:24,946 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 11:52:24,966 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-02 11:52:24,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-02 11:52:24,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:24,987 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-02 11:52:24,989 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:24,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:24,998 INFO L82 PathProgramCache]: Analyzing trace with hash 29984, now seen corresponding path program 1 times [2018-10-02 11:52:25,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:25,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:25,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 11:52:25,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:25,159 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 11:52:25,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 11:52:25,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 11:52:25,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 11:52:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 11:52:25,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-02 11:52:25,184 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-02 11:52:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:25,221 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 11:52:25,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 11:52:25,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-02 11:52:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:25,235 INFO L225 Difference]: With dead ends: 11 [2018-10-02 11:52:25,235 INFO L226 Difference]: Without dead ends: 5 [2018-10-02 11:52:25,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-02 11:52:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-02 11:52:25,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-02 11:52:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-02 11:52:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-02 11:52:25,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-02 11:52:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:25,279 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-02 11:52:25,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 11:52:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-02 11:52:25,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 11:52:25,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:25,280 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 11:52:25,280 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:25,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:25,280 INFO L82 PathProgramCache]: Analyzing trace with hash 927558, now seen corresponding path program 1 times [2018-10-02 11:52:25,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:25,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:25,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 11:52:25,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:25,387 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 11:52:25,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:25,387 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 11:52:25,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 11:52:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:25,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:25,487 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 11:52:25,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:25,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-02 11:52:25,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-02 11:52:25,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-02 11:52:25,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-02 11:52:25,523 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-02 11:52:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:25,570 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-02 11:52:25,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 11:52:25,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-02 11:52:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:25,575 INFO L225 Difference]: With dead ends: 8 [2018-10-02 11:52:25,575 INFO L226 Difference]: Without dead ends: 6 [2018-10-02 11:52:25,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-02 11:52:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-02 11:52:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-02 11:52:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-02 11:52:25,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-02 11:52:25,580 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-02 11:52:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:25,581 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-02 11:52:25,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-02 11:52:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-02 11:52:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 11:52:25,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:25,582 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-02 11:52:25,582 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:25,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:25,585 INFO L82 PathProgramCache]: Analyzing trace with hash 28752352, now seen corresponding path program 2 times [2018-10-02 11:52:25,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:25,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:25,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 11:52:25,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:25,672 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 11:52:25,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:25,673 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 11:52:25,682 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 11:52:25,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 11:52:25,700 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 11:52:25,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:25,707 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 11:52:25,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:25,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-02 11:52:25,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 11:52:25,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 11:52:25,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-02 11:52:25,731 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-02 11:52:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:25,776 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-02 11:52:25,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 11:52:25,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-02 11:52:25,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:25,778 INFO L225 Difference]: With dead ends: 9 [2018-10-02 11:52:25,778 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 11:52:25,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-02 11:52:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 11:52:25,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 11:52:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 11:52:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-02 11:52:25,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-02 11:52:25,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:25,782 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-02 11:52:25,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 11:52:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-02 11:52:25,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 11:52:25,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:25,783 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-02 11:52:25,783 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:25,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash 891320966, now seen corresponding path program 3 times [2018-10-02 11:52:25,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:25,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 11:52:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:25,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:25,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:25,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 11:52:25,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 11:52:25,901 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-02 11:52:25,901 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 11:52:25,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:25,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:25,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-02 11:52:25,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 11:52:25,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 11:52:25,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-02 11:52:25,928 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-02 11:52:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:25,993 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-02 11:52:25,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 11:52:25,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-02 11:52:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:25,994 INFO L225 Difference]: With dead ends: 10 [2018-10-02 11:52:25,994 INFO L226 Difference]: Without dead ends: 8 [2018-10-02 11:52:25,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-02 11:52:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-02 11:52:25,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-02 11:52:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 11:52:25,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-02 11:52:25,997 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-02 11:52:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:25,998 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-02 11:52:25,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 11:52:25,998 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-02 11:52:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 11:52:25,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:25,999 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-02 11:52:25,999 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:25,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144224, now seen corresponding path program 4 times [2018-10-02 11:52:25,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:26,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:26,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:26,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 11:52:26,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:26,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:26,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 11:52:26,289 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 11:52:26,306 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 11:52:26,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 11:52:26,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:26,350 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:26,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-02 11:52:26,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 11:52:26,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 11:52:26,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-02 11:52:26,352 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-02 11:52:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:26,382 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 11:52:26,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 11:52:26,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-02 11:52:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:26,383 INFO L225 Difference]: With dead ends: 11 [2018-10-02 11:52:26,385 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 11:52:26,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-02 11:52:26,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 11:52:26,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 11:52:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 11:52:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-02 11:52:26,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-02 11:52:26,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:26,389 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-02 11:52:26,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 11:52:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-02 11:52:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 11:52:26,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:26,390 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-02 11:52:26,390 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:26,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:26,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894150, now seen corresponding path program 5 times [2018-10-02 11:52:26,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:26,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:26,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:26,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 11:52:26,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:26,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:26,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-02 11:52:26,553 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 11:52:26,569 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-02 11:52:26,570 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 11:52:26,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:26,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:26,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-02 11:52:26,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 11:52:26,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 11:52:26,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-02 11:52:26,606 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-02 11:52:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:26,644 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-02 11:52:26,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 11:52:26,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-02 11:52:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:26,647 INFO L225 Difference]: With dead ends: 12 [2018-10-02 11:52:26,647 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 11:52:26,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-02 11:52:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 11:52:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 11:52:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 11:52:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-02 11:52:26,652 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-02 11:52:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:26,656 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-02 11:52:26,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 11:52:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-02 11:52:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 11:52:26,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:26,657 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-02 11:52:26,658 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:26,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:26,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141856, now seen corresponding path program 6 times [2018-10-02 11:52:26,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:26,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:26,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:26,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 11:52:26,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:26,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:26,864 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 11:52:26,874 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 11:52:26,899 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-02 11:52:26,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 11:52:26,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:26,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:26,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-02 11:52:26,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 11:52:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 11:52:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-02 11:52:26,941 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-02 11:52:27,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:27,007 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 11:52:27,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 11:52:27,007 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-02 11:52:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:27,008 INFO L225 Difference]: With dead ends: 13 [2018-10-02 11:52:27,008 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 11:52:27,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-02 11:52:27,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 11:52:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 11:52:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 11:52:27,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 11:52:27,012 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-02 11:52:27,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:27,012 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 11:52:27,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 11:52:27,012 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 11:52:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 11:52:27,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:27,013 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-02 11:52:27,014 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:27,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820742, now seen corresponding path program 7 times [2018-10-02 11:52:27,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:27,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:27,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:27,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 11:52:27,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:27,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:27,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 11:52:27,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 11:52:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:27,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:27,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:27,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-02 11:52:27,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 11:52:27,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 11:52:27,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-02 11:52:27,313 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-02 11:52:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:27,548 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-02 11:52:27,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 11:52:27,549 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-02 11:52:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:27,550 INFO L225 Difference]: With dead ends: 14 [2018-10-02 11:52:27,550 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 11:52:27,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-02 11:52:27,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 11:52:27,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-02 11:52:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 11:52:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-02 11:52:27,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-02 11:52:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:27,559 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-02 11:52:27,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 11:52:27,559 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-02 11:52:27,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 11:52:27,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:27,560 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-02 11:52:27,561 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:27,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:27,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166496, now seen corresponding path program 8 times [2018-10-02 11:52:27,561 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:27,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:27,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:27,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 11:52:27,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:27,735 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:27,736 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 11:52:27,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 11:52:27,745 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 11:52:27,755 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 11:52:27,755 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 11:52:27,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 11:52:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:27,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 11:52:27,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-02 11:52:27,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 11:52:27,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 11:52:27,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-02 11:52:27,791 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-02 11:52:27,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:27,827 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-02 11:52:27,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 11:52:27,827 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-02 11:52:27,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:27,828 INFO L225 Difference]: With dead ends: 15 [2018-10-02 11:52:27,828 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 11:52:27,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-02 11:52:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 11:52:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 11:52:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 11:52:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-02 11:52:27,832 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-02 11:52:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:27,833 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-02 11:52:27,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 11:52:27,833 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-02 11:52:27,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 11:52:27,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 11:52:27,834 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-02 11:52:27,834 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 11:52:27,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-02 11:52:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash -562523066, now seen corresponding path program 9 times [2018-10-02 11:52:27,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 11:52:27,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 11:52:27,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:27,836 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 11:52:27,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 11:52:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 11:52:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 11:52:27,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 11:52:27,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-02 11:52:27,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 11:52:27,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 11:52:27,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-02 11:52:27,998 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-02 11:52:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 11:52:28,039 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 11:52:28,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 11:52:28,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-02 11:52:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 11:52:28,040 INFO L225 Difference]: With dead ends: 13 [2018-10-02 11:52:28,040 INFO L226 Difference]: Without dead ends: 0 [2018-10-02 11:52:28,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-02 11:52:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-02 11:52:28,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-02 11:52:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-02 11:52:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-02 11:52:28,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-10-02 11:52:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 11:52:28,042 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-02 11:52:28,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 11:52:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-02 11:52:28,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-02 11:52:28,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-02 11:52:28,160 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 22 30) no Hoare annotation was computed. [2018-10-02 11:52:28,161 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 22 30) no Hoare annotation was computed. [2018-10-02 11:52:28,161 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-10-02 11:52:28,161 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 29) no Hoare annotation was computed. [2018-10-02 11:52:28,161 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 22 30) no Hoare annotation was computed. [2018-10-02 11:52:28,162 INFO L421 ceAbstractionStarter]: At program point L25-1(lines 25 28) the Hoare annotation is: (or (<= 9 s) (and (<= i 0) (<= 0 s)) (and (<= 4 s) (<= i 4)) (and (<= i 1) (<= 1 s)) (and (<= 8 s) (<= i 8)) (and (<= i 7) (<= 7 s)) (and (<= i 3) (<= 3 s)) (and (<= 5 s) (<= i 5)) (and (<= i 6) (<= 6 s)) (and (<= i 2) (<= 2 s))) [2018-10-02 11:52:28,173 INFO L202 PluginConnector]: Adding new model HiddenInequality.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 11:52:28 BoogieIcfgContainer [2018-10-02 11:52:28,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 11:52:28,174 INFO L168 Benchmark]: Toolchain (without parser) took 3673.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 245.9 MB). Peak memory consumption was 245.9 MB. Max. memory is 7.1 GB. [2018-10-02 11:52:28,176 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 11:52:28,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.80 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 11:52:28,177 INFO L168 Benchmark]: Boogie Preprocessor took 23.42 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 11:52:28,178 INFO L168 Benchmark]: RCFGBuilder took 278.20 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. [2018-10-02 11:52:28,179 INFO L168 Benchmark]: TraceAbstraction took 3321.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 224.7 MB). Peak memory consumption was 224.7 MB. Max. memory is 7.1 GB. [2018-10-02 11:52:28,183 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.80 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 23.42 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 278.20 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 3321.04 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 224.7 MB). Peak memory consumption was 224.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: 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: 25]: Loop Invariant Derived loop invariant: ((((((((9 <= s || (i <= 0 && 0 <= s)) || (4 <= s && i <= 4)) || (i <= 1 && 1 <= s)) || (8 <= s && i <= 8)) || (i <= 7 && 7 <= s)) || (i <= 3 && 3 <= s)) || (5 <= s && i <= 5)) || (i <= 6 && 6 <= s)) || (i <= 2 && 2 <= s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 10 OverallIterations, 9 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 3 SDslu, 44 SDs, 0 SdLazy, 120 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=9, 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 10 NumberOfFragments, 67 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 2443 SizeOfPredicates, 7 NumberOfNonLiveVariables, 244 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 45/285 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/HiddenInequality.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_11-52-28-197.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/HiddenInequality.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_11-52-28-197.csv Received shutdown request...