java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:56:46,396 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:56:46,397 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:56:46,411 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:56:46,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:56:46,412 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:56:46,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:56:46,415 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:56:46,417 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:56:46,418 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:56:46,419 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:56:46,458 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 10:56:46,485 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:56:46,486 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:56:46,487 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:56:46,487 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:56:46,490 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:56:46,491 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:56:46,491 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:56:46,491 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:56:46,492 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:56:46,492 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:56:46,492 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:56:46,492 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:56:46,492 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:56:46,492 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:56:46,493 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:56:46,493 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:56:46,493 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:56:46,493 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:56:46,494 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:56:46,494 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:56:46,494 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:56:46,495 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:56:46,495 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:56:46,495 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:56:46,495 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:56:46,495 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:56:46,496 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:56:46,496 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:56:46,496 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:56:46,496 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:56:46,496 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:56:46,557 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:56:46,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:56:46,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:56:46,582 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:56:46,583 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:56:46,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl [2018-09-30 10:56:46,584 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl' [2018-09-30 10:56:46,640 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:56:46,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:56:46,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:56:46,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:56:46,644 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:56:46,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,688 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:56:46,688 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:56:46,689 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:56:46,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:56:46,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:56:46,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:56:46,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:56:46,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/1) ... [2018-09-30 10:56:46,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:56:46,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:56:46,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:56:46,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:56:46,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (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 [2018-09-30 10:56:46,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 10:56:46,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 10:56:46,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 10:56:46,956 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:56:46,957 INFO L202 PluginConnector]: Adding new model AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:56:46 BoogieIcfgContainer [2018-09-30 10:56:46,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:56:46,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:56:46,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:56:46,962 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:56:46,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:46" (1/2) ... [2018-09-30 10:56:46,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3957dcbe and model type AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:56:46, skipping insertion in model container [2018-09-30 10:56:46,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:56:46" (2/2) ... [2018-09-30 10:56:46,965 INFO L112 eAbstractionObserver]: Analyzing ICFG AnnoyingVillain.bpl [2018-09-30 10:56:46,975 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:56:46,983 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:56:47,033 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:56:47,034 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:56:47,034 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:56:47,034 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:56:47,034 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:56:47,034 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:56:47,034 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:56:47,035 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:56:47,035 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:56:47,050 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-30 10:56:47,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 10:56:47,056 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:47,057 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 10:56:47,058 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:47,066 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:47,067 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-09-30 10:56:47,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:47,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:47,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:47,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:56:47,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:47,207 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:56:47,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-30 10:56:47,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:56:47,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:56:47,223 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:47,226 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-30 10:56:47,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:47,428 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-09-30 10:56:47,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:56:47,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 10:56:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:47,440 INFO L225 Difference]: With dead ends: 11 [2018-09-30 10:56:47,441 INFO L226 Difference]: Without dead ends: 5 [2018-09-30 10:56:47,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:47,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-30 10:56:47,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-30 10:56:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-30 10:56:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-30 10:56:47,474 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-30 10:56:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:47,475 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-30 10:56:47,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:56:47,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-30 10:56:47,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 10:56:47,475 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:47,476 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 10:56:47,476 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:47,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-09-30 10:56:47,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:47,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:47,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:47,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:56:47,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:47,572 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:47,573 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 [2018-09-30 10:56:47,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:56:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:47,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:47,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:47,719 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:47,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:56:47,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:56:47,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:56:47,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:47,721 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-09-30 10:56:47,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:47,864 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-09-30 10:56:47,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:56:47,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-30 10:56:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:47,868 INFO L225 Difference]: With dead ends: 8 [2018-09-30 10:56:47,868 INFO L226 Difference]: Without dead ends: 6 [2018-09-30 10:56:47,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-30 10:56:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-30 10:56:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-30 10:56:47,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-30 10:56:47,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-30 10:56:47,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:47,874 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-30 10:56:47,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:56:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-30 10:56:47,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 10:56:47,875 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:47,875 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-30 10:56:47,876 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:47,876 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:47,876 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-09-30 10:56:47,876 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:47,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:47,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:47,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:56:47,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:47,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:47,978 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 [2018-09-30 10:56:47,992 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:56:48,011 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:56:48,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:48,013 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:48,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:48,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:56:48,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:56:48,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:56:48,118 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:48,118 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-09-30 10:56:48,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:48,446 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-30 10:56:48,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:56:48,446 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-30 10:56:48,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:48,447 INFO L225 Difference]: With dead ends: 9 [2018-09-30 10:56:48,447 INFO L226 Difference]: Without dead ends: 7 [2018-09-30 10:56:48,447 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-30 10:56:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-30 10:56:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-30 10:56:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-30 10:56:48,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-30 10:56:48,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:48,451 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-30 10:56:48,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:56:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-30 10:56:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:56:48,452 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:48,452 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-30 10:56:48,453 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:48,453 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:48,453 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-09-30 10:56:48,453 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:48,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:48,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:48,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:48,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:48,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:48,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:56:48,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:56:48,691 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-30 10:56:48,692 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:48,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:48,760 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:48,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 10:56:48,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:56:48,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:56:48,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:48,762 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-09-30 10:56:49,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:49,077 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-30 10:56:49,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:56:49,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-09-30 10:56:49,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:49,079 INFO L225 Difference]: With dead ends: 10 [2018-09-30 10:56:49,079 INFO L226 Difference]: Without dead ends: 8 [2018-09-30 10:56:49,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-30 10:56:49,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-30 10:56:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-30 10:56:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-30 10:56:49,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-09-30 10:56:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:49,083 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-30 10:56:49,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:56:49,083 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-30 10:56:49,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-30 10:56:49,083 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:49,083 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-09-30 10:56:49,084 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:49,084 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:49,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-09-30 10:56:49,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:49,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:49,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:49,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:49,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:49,239 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:49,239 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 [2018-09-30 10:56:49,247 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:56:49,256 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:56:49,256 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:49,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:49,319 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:49,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:56:49,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:56:49,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:56:49,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:49,320 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-09-30 10:56:49,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:49,977 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-30 10:56:49,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:56:49,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-30 10:56:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:49,979 INFO L225 Difference]: With dead ends: 11 [2018-09-30 10:56:49,979 INFO L226 Difference]: Without dead ends: 9 [2018-09-30 10:56:49,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-30 10:56:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-30 10:56:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 10:56:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-30 10:56:49,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-09-30 10:56:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:49,984 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-30 10:56:49,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:56:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-30 10:56:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 10:56:49,985 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:49,985 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-09-30 10:56:49,985 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:49,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:49,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-09-30 10:56:49,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:49,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:49,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:49,987 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:49,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:50,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:50,155 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:56:50,163 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:56:50,176 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-30 10:56:50,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:50,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:50,249 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:50,249 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:56:50,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:56:50,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:56:50,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:50,250 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-09-30 10:56:50,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:50,533 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-09-30 10:56:50,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:56:50,535 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 10:56:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:50,536 INFO L225 Difference]: With dead ends: 12 [2018-09-30 10:56:50,536 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 10:56:50,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 10:56:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 10:56:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 10:56:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-30 10:56:50,540 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-09-30 10:56:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:50,540 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-30 10:56:50,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:56:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-30 10:56:50,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-30 10:56:50,541 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:50,541 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-09-30 10:56:50,542 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:50,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-09-30 10:56:50,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:50,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:50,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:50,544 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:50,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:50,829 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:50,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:50,830 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 [2018-09-30 10:56:50,839 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:56:50,857 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-09-30 10:56:50,858 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:50,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:50,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:50,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 10:56:50,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:56:50,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:56:50,918 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:50,918 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-09-30 10:56:51,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:51,377 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 10:56:51,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:56:51,379 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-09-30 10:56:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:51,380 INFO L225 Difference]: With dead ends: 13 [2018-09-30 10:56:51,380 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 10:56:51,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 10:56:51,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 10:56:51,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 10:56:51,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 10:56:51,384 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-09-30 10:56:51,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:51,385 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 10:56:51,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:56:51,385 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 10:56:51,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:56:51,386 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:51,386 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-09-30 10:56:51,386 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:51,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:51,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-09-30 10:56:51,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:51,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:51,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:51,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:51,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:51,563 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:51,563 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 [2018-09-30 10:56:51,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:56:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:51,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:51,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:51,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:56:51,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:56:51,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:56:51,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:51,638 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-09-30 10:56:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:52,075 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-30 10:56:52,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:56:52,077 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-09-30 10:56:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:52,077 INFO L225 Difference]: With dead ends: 14 [2018-09-30 10:56:52,077 INFO L226 Difference]: Without dead ends: 12 [2018-09-30 10:56:52,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:52,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-30 10:56:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-30 10:56:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-30 10:56:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-30 10:56:52,081 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-30 10:56:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:52,081 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-30 10:56:52,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:56:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-30 10:56:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 10:56:52,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:52,082 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-09-30 10:56:52,082 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:52,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-09-30 10:56:52,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:52,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:52,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:52,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:56:52,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:52,285 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:52,286 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:52,286 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 [2018-09-30 10:56:52,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:56:52,319 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:56:52,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:52,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:56:53,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:53,107 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2018-09-30 10:56:53,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 10:56:53,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 10:56:53,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:53,108 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 19 states. [2018-09-30 10:56:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:56,487 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-09-30 10:56:56,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:56:56,488 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 11 [2018-09-30 10:56:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:56,489 INFO L225 Difference]: With dead ends: 35 [2018-09-30 10:56:56,489 INFO L226 Difference]: Without dead ends: 32 [2018-09-30 10:56:56,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:56,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-30 10:56:56,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 19. [2018-09-30 10:56:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:56:56,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-09-30 10:56:56,495 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2018-09-30 10:56:56,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:56,495 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-09-30 10:56:56,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 10:56:56,495 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2018-09-30 10:56:56,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 10:56:56,496 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:56,496 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-09-30 10:56:56,496 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:56,496 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-09-30 10:56:56,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:56,497 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:56,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:56,498 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:56,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:57,106 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:57,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:56:57,114 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:56:57,159 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-30 10:56:57,160 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:57,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:57,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:57,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 10:56:57,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:56:57,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:56:57,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:57,275 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 12 states. [2018-09-30 10:56:57,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:57,991 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2018-09-30 10:56:57,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 10:56:57,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-09-30 10:56:57,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:57,997 INFO L225 Difference]: With dead ends: 23 [2018-09-30 10:56:57,997 INFO L226 Difference]: Without dead ends: 21 [2018-09-30 10:56:57,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-30 10:56:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-30 10:56:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-30 10:56:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2018-09-30 10:56:58,004 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 12 [2018-09-30 10:56:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:58,004 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2018-09-30 10:56:58,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:56:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2018-09-30 10:56:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-30 10:56:58,005 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:58,005 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-09-30 10:56:58,005 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:58,005 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:58,006 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-09-30 10:56:58,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:58,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:58,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:58,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:58,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:56:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:58,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:56:58,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:56:58,420 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:56:58,455 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:56:58,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:56:58,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:56:58,712 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:56:58,745 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:56:58,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 10:56:58,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:56:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:56:58,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:56:58,747 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 13 states. [2018-09-30 10:56:59,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:56:59,569 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2018-09-30 10:56:59,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:56:59,570 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-09-30 10:56:59,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:56:59,571 INFO L225 Difference]: With dead ends: 24 [2018-09-30 10:56:59,571 INFO L226 Difference]: Without dead ends: 22 [2018-09-30 10:56:59,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:56:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-30 10:56:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-30 10:56:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-30 10:56:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2018-09-30 10:56:59,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2018-09-30 10:56:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:56:59,577 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2018-09-30 10:56:59,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:56:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2018-09-30 10:56:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:56:59,578 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:56:59,578 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-09-30 10:56:59,578 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:56:59,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:56:59,578 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-09-30 10:56:59,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:56:59,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:56:59,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:59,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:56:59,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:56:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:00,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:00,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:00,103 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:57:00,117 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-30 10:57:00,117 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:00,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:00,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:00,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:57:00,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:57:00,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:57:00,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:00,180 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 14 states. [2018-09-30 10:57:01,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:01,231 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2018-09-30 10:57:01,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 10:57:01,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 10:57:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:01,233 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:57:01,234 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:57:01,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:01,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:57:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 10:57:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 10:57:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2018-09-30 10:57:01,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2018-09-30 10:57:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:01,240 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2018-09-30 10:57:01,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:57:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2018-09-30 10:57:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 10:57:01,241 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:01,241 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-09-30 10:57:01,241 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:01,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:01,241 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-09-30 10:57:01,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:01,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:01,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:01,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:01,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:01,524 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:01,525 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:01,525 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:01,534 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:57:01,547 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 10:57:01,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:01,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:01,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:01,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 10:57:01,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:57:01,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:57:01,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:01,617 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 15 states. [2018-09-30 10:57:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:02,704 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2018-09-30 10:57:02,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:57:02,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 10:57:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:02,706 INFO L225 Difference]: With dead ends: 26 [2018-09-30 10:57:02,707 INFO L226 Difference]: Without dead ends: 24 [2018-09-30 10:57:02,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:02,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-30 10:57:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-30 10:57:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 10:57:02,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-09-30 10:57:02,712 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2018-09-30 10:57:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:02,712 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-09-30 10:57:02,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:57:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2018-09-30 10:57:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-30 10:57:02,713 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:02,713 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-09-30 10:57:02,714 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:02,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:02,714 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-09-30 10:57:02,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:02,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:02,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:02,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:02,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:03,216 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:03,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:03,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:03,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:03,352 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:03,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:57:03,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:57:03,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:57:03,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:03,353 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 16 states. [2018-09-30 10:57:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:04,362 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2018-09-30 10:57:04,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:57:04,365 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-09-30 10:57:04,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:04,366 INFO L225 Difference]: With dead ends: 27 [2018-09-30 10:57:04,366 INFO L226 Difference]: Without dead ends: 25 [2018-09-30 10:57:04,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-30 10:57:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-30 10:57:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 10:57:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2018-09-30 10:57:04,371 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 16 [2018-09-30 10:57:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:04,371 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2018-09-30 10:57:04,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:57:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2018-09-30 10:57:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-30 10:57:04,372 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:04,372 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-09-30 10:57:04,372 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:04,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:04,372 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-09-30 10:57:04,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:04,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:04,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:04,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:57:04,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:05,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:05,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:05,177 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:57:05,188 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:57:05,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:05,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:05,411 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:05,412 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:57:05,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:57:05,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:57:05,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:05,413 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 17 states. [2018-09-30 10:57:06,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:06,713 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2018-09-30 10:57:06,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:57:06,715 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-09-30 10:57:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:06,716 INFO L225 Difference]: With dead ends: 28 [2018-09-30 10:57:06,716 INFO L226 Difference]: Without dead ends: 26 [2018-09-30 10:57:06,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:06,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-30 10:57:06,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-30 10:57:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-30 10:57:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2018-09-30 10:57:06,721 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2018-09-30 10:57:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:06,721 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2018-09-30 10:57:06,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:57:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2018-09-30 10:57:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:57:06,722 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:06,722 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-09-30 10:57:06,723 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:06,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:06,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-09-30 10:57:06,723 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:06,723 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:06,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:06,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:06,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:07,742 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:07,743 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:57:07,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:57:07,750 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:57:07,765 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-09-30 10:57:07,765 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:57:07,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:57:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:57:07,836 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:57:07,836 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 10:57:07,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 10:57:07,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 10:57:07,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:57:07,837 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 18 states. [2018-09-30 10:57:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:57:09,241 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-09-30 10:57:09,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:57:09,241 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-30 10:57:09,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:57:09,242 INFO L225 Difference]: With dead ends: 29 [2018-09-30 10:57:09,243 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 10:57:09,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:57:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 10:57:09,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 10:57:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 10:57:09,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2018-09-30 10:57:09,248 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 18 [2018-09-30 10:57:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:57:09,248 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2018-09-30 10:57:09,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 10:57:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2018-09-30 10:57:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-30 10:57:09,249 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:57:09,250 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-09-30 10:57:09,250 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:57:09,250 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:57:09,250 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 16 times [2018-09-30 10:57:09,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:57:09,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:57:09,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:09,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:57:09,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:57:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:57:12,748 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot handle case were solver cannot decide implication of predicates at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.internImplication(ImplicationGraph.java:316) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.unifyPredicate(ImplicationGraph.java:174) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.BPredicateUnifier.getOrConstructPredicateInternal(BPredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.BPredicateUnifier.getOrConstructPredicate(BPredicateUnifier.java:320) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:592) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:236) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-30 10:57:12,755 INFO L168 Benchmark]: Toolchain (without parser) took 26115.18 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 113.8 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 421.9 MB). Peak memory consumption was 535.7 MB. Max. memory is 7.1 GB. [2018-09-30 10:57:12,757 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:57:12,758 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.36 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:57:12,759 INFO L168 Benchmark]: Boogie Preprocessor took 28.63 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:57:12,759 INFO L168 Benchmark]: RCFGBuilder took 236.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:57:12,762 INFO L168 Benchmark]: TraceAbstraction took 25792.46 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 113.8 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 400.7 MB). Peak memory consumption was 514.5 MB. Max. memory is 7.1 GB. [2018-09-30 10:57:12,769 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.36 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 28.63 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 236.26 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 25792.46 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 113.8 MB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 400.7 MB). Peak memory consumption was 514.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Cannot handle case were solver cannot decide implication of predicates de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot handle case were solver cannot decide implication of predicates: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.internImplication(ImplicationGraph.java:316) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/AnnoyingVillain.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-57-12-784.csv Received shutdown request...