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-b2fde6a [2018-09-28 10:38:06,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:38:06,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:38:06,201 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:38:06,201 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:38:06,202 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:38:06,203 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:38:06,205 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:38:06,207 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:38:06,207 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:38:06,208 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-28 10:38:06,238 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 [2018-09-28 10:38:06,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:38:06,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:38:06,268 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:38:06,269 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:38:06,269 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:38:06,269 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:38:06,272 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:38:06,273 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:38:06,273 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:38:06,273 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:38:06,273 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:38:06,274 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:38:06,274 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:38:06,274 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:38:06,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:38:06,274 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:38:06,275 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:38:06,275 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:38:06,276 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:38:06,276 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:38:06,276 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:38:06,276 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:38:06,276 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:38:06,277 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:38:06,277 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:38:06,277 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:38:06,277 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:38:06,278 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:38:06,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:38:06,278 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:38:06,278 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-28 10:38:06,339 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:38:06,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:38:06,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:38:06,361 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:38:06,362 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:38:06,362 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl [2018-09-28 10:38:06,363 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/AnnoyingVillain.bpl' [2018-09-28 10:38:06,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:38:06,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:38:06,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:38:06,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:38:06,410 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:38:06,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,447 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-28 10:38:06,448 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-28 10:38:06,448 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-28 10:38:06,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:38:06,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:38:06,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:38:06,451 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:38:06,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... [2018-09-28 10:38:06,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:38:06,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:38:06,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:38:06,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:38:06,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:38:06,545 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-28 10:38:06,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-28 10:38:06,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-28 10:38:06,724 INFO L350 CfgBuilder]: Using library mode [2018-09-28 10:38:06,724 INFO L202 PluginConnector]: Adding new model AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:38:06 BoogieIcfgContainer [2018-09-28 10:38:06,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:38:06,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:38:06,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:38:06,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:38:06,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:38:06" (1/2) ... [2018-09-28 10:38:06,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dec0f3e and model type AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:38:06, skipping insertion in model container [2018-09-28 10:38:06,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "AnnoyingVillain.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:38:06" (2/2) ... [2018-09-28 10:38:06,732 INFO L112 eAbstractionObserver]: Analyzing ICFG AnnoyingVillain.bpl [2018-09-28 10:38:06,746 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:38:06,754 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-28 10:38:06,801 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:38:06,801 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:38:06,802 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:38:06,802 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:38:06,802 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:38:06,802 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:38:06,802 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:38:06,802 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:38:06,803 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:38:06,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-28 10:38:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-28 10:38:06,822 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:06,823 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-28 10:38:06,824 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:06,833 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:06,833 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-09-28 10:38:06,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:06,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:06,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:06,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:06,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:06,980 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:38:06,980 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-09-28 10:38:06,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-28 10:38:06,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-28 10:38:06,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:06,997 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-28 10:38:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:07,205 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2018-09-28 10:38:07,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-28 10:38:07,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-28 10:38:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:07,220 INFO L225 Difference]: With dead ends: 11 [2018-09-28 10:38:07,220 INFO L226 Difference]: Without dead ends: 5 [2018-09-28 10:38:07,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-28 10:38:07,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-28 10:38:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-28 10:38:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-28 10:38:07,258 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-28 10:38:07,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:07,258 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-28 10:38:07,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-28 10:38:07,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-28 10:38:07,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-28 10:38:07,259 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:07,259 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-28 10:38:07,259 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:07,260 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:07,260 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-09-28 10:38:07,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:07,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:07,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:07,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:07,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:07,368 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:07,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-28 10:38:07,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:07,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:07,452 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:07,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-28 10:38:07,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-28 10:38:07,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-28 10:38:07,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:07,453 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-09-28 10:38:07,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:07,616 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-09-28 10:38:07,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-28 10:38:07,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-28 10:38:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:07,617 INFO L225 Difference]: With dead ends: 8 [2018-09-28 10:38:07,617 INFO L226 Difference]: Without dead ends: 6 [2018-09-28 10:38:07,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:07,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-28 10:38:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-28 10:38:07,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-28 10:38:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-28 10:38:07,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-28 10:38:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:07,621 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-28 10:38:07,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-28 10:38:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-28 10:38:07,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-28 10:38:07,622 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:07,622 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-28 10:38:07,623 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:07,623 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:07,623 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-09-28 10:38:07,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:07,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:07,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:07,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:07,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:07,720 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:07,720 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-28 10:38:07,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:38:07,771 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:38:07,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:07,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:07,859 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:07,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-28 10:38:07,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:38:07,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:38:07,860 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:07,860 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-09-28 10:38:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:08,193 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-28 10:38:08,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-28 10:38:08,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-28 10:38:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:08,194 INFO L225 Difference]: With dead ends: 9 [2018-09-28 10:38:08,194 INFO L226 Difference]: Without dead ends: 7 [2018-09-28 10:38:08,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-28 10:38:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-28 10:38:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-28 10:38:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-28 10:38:08,197 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-28 10:38:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:08,198 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-28 10:38:08,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:38:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-28 10:38:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-28 10:38:08,198 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:08,199 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-28 10:38:08,199 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:08,199 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:08,199 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-09-28 10:38:08,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:08,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:08,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:08,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:08,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:08,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:08,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:08,354 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 [2018-09-28 10:38:08,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:38:08,391 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-28 10:38:08,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:08,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:08,459 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:08,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-28 10:38:08,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-28 10:38:08,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-28 10:38:08,460 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:08,460 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-09-28 10:38:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:08,760 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-28 10:38:08,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:38:08,762 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-09-28 10:38:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:08,762 INFO L225 Difference]: With dead ends: 10 [2018-09-28 10:38:08,763 INFO L226 Difference]: Without dead ends: 8 [2018-09-28 10:38:08,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-28 10:38:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-28 10:38:08,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-28 10:38:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-28 10:38:08,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-09-28 10:38:08,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:08,767 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-28 10:38:08,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-28 10:38:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-28 10:38:08,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-28 10:38:08,768 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:08,768 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-09-28 10:38:08,768 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:08,769 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:08,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-09-28 10:38:08,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:08,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:08,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:08,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:08,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:08,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:08,944 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 [2018-09-28 10:38:08,952 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:38:08,961 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:38:08,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:08,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:09,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:09,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-28 10:38:09,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:38:09,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:38:09,014 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:09,014 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-09-28 10:38:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:09,635 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-28 10:38:09,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:38:09,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-28 10:38:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:09,637 INFO L225 Difference]: With dead ends: 11 [2018-09-28 10:38:09,638 INFO L226 Difference]: Without dead ends: 9 [2018-09-28 10:38:09,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-28 10:38:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-28 10:38:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-28 10:38:09,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-28 10:38:09,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-09-28 10:38:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:09,642 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-28 10:38:09,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:38:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-28 10:38:09,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-28 10:38:09,642 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:09,642 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-09-28 10:38:09,643 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:09,643 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:09,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-09-28 10:38:09,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:09,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:09,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:09,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:09,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:09,808 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:09,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:09,809 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 [2018-09-28 10:38:09,818 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:38:09,835 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-28 10:38:09,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:09,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:09,902 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:09,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-28 10:38:09,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:38:09,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:38:09,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:09,903 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-09-28 10:38:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:10,286 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-09-28 10:38:10,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-28 10:38:10,287 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-28 10:38:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:10,288 INFO L225 Difference]: With dead ends: 12 [2018-09-28 10:38:10,288 INFO L226 Difference]: Without dead ends: 10 [2018-09-28 10:38:10,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-28 10:38:10,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-28 10:38:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-28 10:38:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-28 10:38:10,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-09-28 10:38:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:10,292 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-28 10:38:10,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:38:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-28 10:38:10,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-28 10:38:10,293 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:10,293 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-09-28 10:38:10,293 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:10,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:10,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-09-28 10:38:10,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:10,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:10,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:10,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:10,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:10,500 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:10,500 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 [2018-09-28 10:38:10,511 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:38:10,525 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-09-28 10:38:10,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:10,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:10,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:10,585 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-28 10:38:10,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-28 10:38:10,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-28 10:38:10,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:10,586 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-09-28 10:38:11,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:11,040 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-28 10:38:11,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-28 10:38:11,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-09-28 10:38:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:11,042 INFO L225 Difference]: With dead ends: 13 [2018-09-28 10:38:11,042 INFO L226 Difference]: Without dead ends: 11 [2018-09-28 10:38:11,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-28 10:38:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-28 10:38:11,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-28 10:38:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-28 10:38:11,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-09-28 10:38:11,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:11,046 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-28 10:38:11,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-28 10:38:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-28 10:38:11,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:38:11,047 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:11,047 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-09-28 10:38:11,047 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:11,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:11,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-09-28 10:38:11,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:11,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:11,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:11,049 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:11,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:11,242 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:11,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:11,243 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 [2018-09-28 10:38:11,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:11,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:11,321 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:11,321 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-28 10:38:11,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-28 10:38:11,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-28 10:38:11,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:11,322 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-09-28 10:38:11,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:11,739 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-28 10:38:11,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-28 10:38:11,740 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-09-28 10:38:11,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:11,741 INFO L225 Difference]: With dead ends: 14 [2018-09-28 10:38:11,741 INFO L226 Difference]: Without dead ends: 12 [2018-09-28 10:38:11,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-28 10:38:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-28 10:38:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-28 10:38:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-28 10:38:11,744 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-28 10:38:11,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:11,745 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-28 10:38:11,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-28 10:38:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-28 10:38:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-28 10:38:11,746 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:11,746 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-09-28 10:38:11,746 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:11,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:11,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-09-28 10:38:11,747 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:11,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:11,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:11,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:11,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:11,956 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:11,956 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 [2018-09-28 10:38:11,971 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:38:11,991 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:38:11,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:11,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-28 10:38:12,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:12,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18 [2018-09-28 10:38:12,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-28 10:38:12,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-28 10:38:12,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:12,769 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 19 states. [2018-09-28 10:38:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:16,369 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-09-28 10:38:16,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-28 10:38:16,371 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 11 [2018-09-28 10:38:16,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:16,372 INFO L225 Difference]: With dead ends: 35 [2018-09-28 10:38:16,372 INFO L226 Difference]: Without dead ends: 32 [2018-09-28 10:38:16,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-28 10:38:16,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 19. [2018-09-28 10:38:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-28 10:38:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2018-09-28 10:38:16,377 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2018-09-28 10:38:16,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:16,378 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2018-09-28 10:38:16,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-28 10:38:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2018-09-28 10:38:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-28 10:38:16,378 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:16,378 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-09-28 10:38:16,379 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:16,379 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:16,379 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-09-28 10:38:16,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:16,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:16,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:16,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:16,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:16,606 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:16,606 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 [2018-09-28 10:38:16,615 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:38:16,657 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-28 10:38:16,657 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:16,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:16,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:16,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-28 10:38:16,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-28 10:38:16,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-28 10:38:16,754 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:16,754 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand 12 states. [2018-09-28 10:38:17,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:17,456 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2018-09-28 10:38:17,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-28 10:38:17,457 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-09-28 10:38:17,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:17,461 INFO L225 Difference]: With dead ends: 23 [2018-09-28 10:38:17,461 INFO L226 Difference]: Without dead ends: 21 [2018-09-28 10:38:17,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:17,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-28 10:38:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-28 10:38:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-28 10:38:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2018-09-28 10:38:17,467 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 12 [2018-09-28 10:38:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:17,469 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2018-09-28 10:38:17,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-28 10:38:17,469 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2018-09-28 10:38:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:38:17,469 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:17,470 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-09-28 10:38:17,470 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:17,470 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:17,470 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-09-28 10:38:17,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:17,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:17,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:17,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:17,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:17,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:17,920 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 [2018-09-28 10:38:17,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-28 10:38:17,956 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-28 10:38:17,957 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:17,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:18,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:18,253 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-28 10:38:18,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:38:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:38:18,254 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:18,254 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand 13 states. [2018-09-28 10:38:18,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:18,964 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2018-09-28 10:38:18,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-28 10:38:18,966 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-09-28 10:38:18,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:18,967 INFO L225 Difference]: With dead ends: 24 [2018-09-28 10:38:18,967 INFO L226 Difference]: Without dead ends: 22 [2018-09-28 10:38:18,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-28 10:38:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-28 10:38:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-28 10:38:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2018-09-28 10:38:18,973 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 13 [2018-09-28 10:38:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:18,973 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2018-09-28 10:38:18,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:38:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2018-09-28 10:38:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-28 10:38:18,974 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:18,974 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-09-28 10:38:18,974 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:18,975 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:18,975 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-09-28 10:38:18,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:18,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:18,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:19,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:19,288 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 [2018-09-28 10:38:19,297 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-28 10:38:19,310 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-28 10:38:19,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:19,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:19,344 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:19,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:19,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-28 10:38:19,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:38:19,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:38:19,366 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:19,366 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 14 states. [2018-09-28 10:38:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:20,356 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2018-09-28 10:38:20,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-28 10:38:20,357 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-28 10:38:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:20,358 INFO L225 Difference]: With dead ends: 25 [2018-09-28 10:38:20,358 INFO L226 Difference]: Without dead ends: 23 [2018-09-28 10:38:20,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-28 10:38:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-28 10:38:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-28 10:38:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2018-09-28 10:38:20,364 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2018-09-28 10:38:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:20,364 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2018-09-28 10:38:20,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:38:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2018-09-28 10:38:20,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-28 10:38:20,365 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:20,365 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-09-28 10:38:20,365 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:20,365 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:20,365 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-09-28 10:38:20,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:20,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:20,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:20,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:20,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:20,634 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:20,634 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 [2018-09-28 10:38:20,642 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-28 10:38:20,655 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-28 10:38:20,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:20,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:20,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:20,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-28 10:38:20,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-28 10:38:20,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-28 10:38:20,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:20,728 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 15 states. [2018-09-28 10:38:21,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:21,683 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2018-09-28 10:38:21,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-28 10:38:21,685 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-28 10:38:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:21,686 INFO L225 Difference]: With dead ends: 26 [2018-09-28 10:38:21,686 INFO L226 Difference]: Without dead ends: 24 [2018-09-28 10:38:21,687 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-28 10:38:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-28 10:38:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-28 10:38:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2018-09-28 10:38:21,691 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 15 [2018-09-28 10:38:21,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:21,691 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2018-09-28 10:38:21,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-28 10:38:21,692 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2018-09-28 10:38:21,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:38:21,692 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:21,692 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-09-28 10:38:21,692 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:21,693 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:21,693 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-09-28 10:38:21,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:21,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:21,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:21,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:21,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:22,168 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:22,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:22,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:38:22,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:22,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:22,296 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:22,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-28 10:38:22,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:38:22,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:38:22,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:22,297 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand 16 states. [2018-09-28 10:38:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:23,378 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2018-09-28 10:38:23,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-28 10:38:23,381 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-09-28 10:38:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:23,382 INFO L225 Difference]: With dead ends: 27 [2018-09-28 10:38:23,382 INFO L226 Difference]: Without dead ends: 25 [2018-09-28 10:38:23,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:23,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-28 10:38:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-28 10:38:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-28 10:38:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2018-09-28 10:38:23,387 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 16 [2018-09-28 10:38:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:23,387 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2018-09-28 10:38:23,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:38:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2018-09-28 10:38:23,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-28 10:38:23,388 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:23,388 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-09-28 10:38:23,388 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:23,388 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:23,388 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-09-28 10:38:23,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:23,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:23,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:23,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:38:23,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:23,747 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:23,747 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 [2018-09-28 10:38:23,755 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:38:23,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:38:23,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:23,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:23,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:23,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-28 10:38:23,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:38:23,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:38:23,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:23,890 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand 17 states. [2018-09-28 10:38:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:25,124 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2018-09-28 10:38:25,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:38:25,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-09-28 10:38:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:25,126 INFO L225 Difference]: With dead ends: 28 [2018-09-28 10:38:25,126 INFO L226 Difference]: Without dead ends: 26 [2018-09-28 10:38:25,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-28 10:38:25,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-28 10:38:25,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-28 10:38:25,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2018-09-28 10:38:25,132 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 17 [2018-09-28 10:38:25,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:25,132 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2018-09-28 10:38:25,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:38:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2018-09-28 10:38:25,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:38:25,133 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:25,133 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-09-28 10:38:25,133 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:25,133 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-09-28 10:38:25,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:25,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:25,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:25,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:25,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:26,011 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:38:26,011 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 [2018-09-28 10:38:26,018 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-28 10:38:26,035 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-09-28 10:38:26,035 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:38:26,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:38:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:38:26,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:38:26,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-28 10:38:26,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-28 10:38:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-28 10:38:26,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:38:26,127 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 18 states. [2018-09-28 10:38:27,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:38:27,546 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2018-09-28 10:38:27,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:38:27,547 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-28 10:38:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:38:27,548 INFO L225 Difference]: With dead ends: 29 [2018-09-28 10:38:27,548 INFO L226 Difference]: Without dead ends: 27 [2018-09-28 10:38:27,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:38:27,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-28 10:38:27,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-28 10:38:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-28 10:38:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2018-09-28 10:38:27,554 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 18 [2018-09-28 10:38:27,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:38:27,555 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2018-09-28 10:38:27,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-28 10:38:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2018-09-28 10:38:27,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 10:38:27,556 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:38:27,556 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-09-28 10:38:27,556 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:38:27,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:38:27,556 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 16 times [2018-09-28 10:38:27,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:38:27,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:38:27,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:27,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:38:27,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:38:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:38:30,298 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:313) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.biesenb.ImplicationGraph.unifyPredicate(ImplicationGraph.java:173) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-28 10:38:30,302 INFO L168 Benchmark]: Toolchain (without parser) took 23895.50 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 91.2 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 462.9 MB). Peak memory consumption was 554.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:38:30,303 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:38:30,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.87 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:38:30,305 INFO L168 Benchmark]: Boogie Preprocessor took 20.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:38:30,305 INFO L168 Benchmark]: RCFGBuilder took 252.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:38:30,306 INFO L168 Benchmark]: TraceAbstraction took 23575.83 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 91.2 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 441.8 MB). Peak memory consumption was 533.0 MB. Max. memory is 7.1 GB. [2018-09-28 10:38:30,310 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 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 40.87 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 20.95 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 252.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23575.83 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 91.2 MB). Free memory was 1.5 GB in the beginning and 1.0 GB in the end (delta: 441.8 MB). Peak memory consumption was 533.0 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:313) 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-0-2018-09-28_10-38-30-322.csv Received shutdown request...