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/nonlinear/Mult1-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:22:11,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:22:11,406 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:22:11,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:22:11,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:22:11,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:22:11,421 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:22:11,423 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:22:11,424 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:22:11,425 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:22:11,426 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-02 12:22:11,426 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-02 12:22:11,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-02 12:22:11,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-02 12:22:11,430 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-02 12:22:11,430 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-02 12:22:11,431 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-02 12:22:11,433 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-02 12:22:11,435 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-02 12:22:11,437 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-02 12:22:11,438 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-02 12:22:11,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-02 12:22:11,441 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-02 12:22:11,451 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 [2018-10-02 12:22:11,466 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:22:11,466 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:22:11,467 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:22:11,467 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:22:11,468 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:22:11,468 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:22:11,468 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:22:11,468 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:22:11,469 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:22:11,469 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:22:11,469 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:22:11,469 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:22:11,469 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:22:11,469 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:22:11,470 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:22:11,470 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:22:11,470 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:22:11,470 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:22:11,470 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:22:11,471 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:22:11,471 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:22:11,471 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:22:11,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:22:11,471 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:22:11,472 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:22:11,472 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:22:11,472 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:22:11,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:22:11,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:22:11,472 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:22:11,473 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:22:11,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:22:11,529 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:22:11,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:22:11,535 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:22:11,535 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:22:11,536 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Mult1-Safe.bpl [2018-10-02 12:22:11,536 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Mult1-Safe.bpl' [2018-10-02 12:22:11,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:22:11,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:22:11,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:22:11,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:22:11,587 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:22:11,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,624 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:22:11,625 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:22:11,625 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:22:11,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:22:11,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:22:11,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:22:11,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:22:11,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... [2018-10-02 12:22:11,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:22:11,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:22:11,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:22:11,652 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:22:11,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:22:11,724 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mult given in one single declaration [2018-10-02 12:22:11,725 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2018-10-02 12:22:11,725 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2018-10-02 12:22:11,791 WARN L617 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-10-02 12:22:11,927 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:22:11,928 INFO L202 PluginConnector]: Adding new model Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:22:11 BoogieIcfgContainer [2018-10-02 12:22:11,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:22:11,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:22:11,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:22:11,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:22:11,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:22:11" (1/2) ... [2018-10-02 12:22:11,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6afee1 and model type Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:22:11, skipping insertion in model container [2018-10-02 12:22:11,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:22:11" (2/2) ... [2018-10-02 12:22:11,936 INFO L112 eAbstractionObserver]: Analyzing ICFG Mult1-Safe.bpl [2018-10-02 12:22:11,947 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:22:11,956 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:22:12,011 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:22:12,012 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:22:12,012 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:22:12,012 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:22:12,012 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:22:12,013 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:22:12,013 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:22:12,013 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:22:12,013 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:22:12,030 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-02 12:22:12,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:22:12,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:12,038 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:22:12,039 INFO L423 AbstractCegarLoop]: === Iteration 1 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:12,045 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:12,046 INFO L82 PathProgramCache]: Analyzing trace with hash 924708, now seen corresponding path program 1 times [2018-10-02 12:22:12,048 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:12,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:12,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:12,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,129 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:12,130 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:12,130 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:12,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:12,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:12,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:22:12,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-02 12:22:12,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:22:12,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:22:12,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:12,353 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 5 states. [2018-10-02 12:22:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:12,706 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-02 12:22:12,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:22:12,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-10-02 12:22:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:12,724 INFO L225 Difference]: With dead ends: 10 [2018-10-02 12:22:12,725 INFO L226 Difference]: Without dead ends: 6 [2018-10-02 12:22:12,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:12,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-02 12:22:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-02 12:22:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-02 12:22:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-02 12:22:12,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-02 12:22:12,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:12,763 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-02 12:22:12,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:22:12,764 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-02 12:22:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:22:12,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:12,764 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-02 12:22:12,765 INFO L423 AbstractCegarLoop]: === Iteration 2 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:12,765 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:12,765 INFO L82 PathProgramCache]: Analyzing trace with hash 28663973, now seen corresponding path program 1 times [2018-10-02 12:22:12,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:12,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:12,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:12,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,771 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:12,771 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:12,771 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:12,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:12,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:12,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:12,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:12,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-10-02 12:22:12,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:22:12,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:22:12,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:12,925 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-02 12:22:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:13,304 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-02 12:22:13,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:22:13,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-02 12:22:13,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:13,307 INFO L225 Difference]: With dead ends: 9 [2018-10-02 12:22:13,308 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:22:13,309 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:22:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:22:13,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 12:22:13,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 12:22:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-02 12:22:13,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-02 12:22:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:13,313 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-02 12:22:13,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:22:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-02 12:22:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:22:13,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:13,319 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-02 12:22:13,319 INFO L423 AbstractCegarLoop]: === Iteration 3 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:13,320 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:13,320 INFO L82 PathProgramCache]: Analyzing trace with hash 888581188, now seen corresponding path program 2 times [2018-10-02 12:22:13,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:13,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:13,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:13,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,328 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:13,328 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:13,328 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:13,344 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:13,355 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:13,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:13,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:13,524 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:13,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-02 12:22:13,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:22:13,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:22:13,525 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:13,525 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-02 12:22:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:13,802 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-02 12:22:13,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:22:13,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-02 12:22:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:13,804 INFO L225 Difference]: With dead ends: 10 [2018-10-02 12:22:13,804 INFO L226 Difference]: Without dead ends: 8 [2018-10-02 12:22:13,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-02 12:22:13,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-02 12:22:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 12:22:13,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-02 12:22:13,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-02 12:22:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:13,810 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-02 12:22:13,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:22:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-02 12:22:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:22:13,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:13,811 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2018-10-02 12:22:13,811 INFO L423 AbstractCegarLoop]: === Iteration 4 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:13,812 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:13,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1776211077, now seen corresponding path program 3 times [2018-10-02 12:22:13,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:13,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:13,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:13,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:13,822 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:13,822 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:13,822 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:13,829 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:13,838 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-02 12:22:13,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:13,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:14,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:14,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-10-02 12:22:14,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:22:14,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:22:14,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:14,194 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-02 12:22:14,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:14,572 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 12:22:14,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:22:14,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-02 12:22:14,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:14,573 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:22:14,573 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:22:14,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:22:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:22:14,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 12:22:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:22:14,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-02 12:22:14,578 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-02 12:22:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:14,579 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-02 12:22:14,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:22:14,579 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-02 12:22:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:22:14,580 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:14,580 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2018-10-02 12:22:14,580 INFO L423 AbstractCegarLoop]: === Iteration 5 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:14,580 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:14,581 INFO L82 PathProgramCache]: Analyzing trace with hash -772033436, now seen corresponding path program 4 times [2018-10-02 12:22:14,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:14,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:14,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:14,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:14,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:14,591 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:14,591 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:14,591 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:14,601 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:14,610 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:14,610 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:14,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:14,715 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:14,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:14,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-02 12:22:14,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:22:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:22:14,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:14,737 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-02 12:22:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:15,043 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-02 12:22:15,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:22:15,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-02 12:22:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:15,045 INFO L225 Difference]: With dead ends: 12 [2018-10-02 12:22:15,045 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:22:15,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:22:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:22:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 12:22:15,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:22:15,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-02 12:22:15,050 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-02 12:22:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:15,051 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-02 12:22:15,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:22:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-02 12:22:15,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:22:15,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:15,051 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2018-10-02 12:22:15,052 INFO L423 AbstractCegarLoop]: === Iteration 6 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:15,052 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:15,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1836765285, now seen corresponding path program 5 times [2018-10-02 12:22:15,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:15,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:15,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,061 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:15,061 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:15,061 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:15,089 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:15,104 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-02 12:22:15,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:15,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:15,291 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:15,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-02 12:22:15,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:22:15,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:22:15,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:15,292 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-02 12:22:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:15,631 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 12:22:15,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:22:15,635 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-02 12:22:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:15,635 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:22:15,636 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:22:15,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:22:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:22:15,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:22:15,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:22:15,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 12:22:15,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-02 12:22:15,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:15,640 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 12:22:15,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:22:15,640 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 12:22:15,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:22:15,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:15,641 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1] [2018-10-02 12:22:15,641 INFO L423 AbstractCegarLoop]: === Iteration 7 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:15,642 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1105147012, now seen corresponding path program 6 times [2018-10-02 12:22:15,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:15,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:15,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:15,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,652 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:15,652 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:15,653 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:15,665 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:15,679 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-02 12:22:15,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:15,681 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:15,900 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:15,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-02 12:22:15,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:22:15,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:22:15,901 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:15,901 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-02 12:22:16,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:16,284 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-02 12:22:16,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:22:16,285 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-02 12:22:16,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:16,286 INFO L225 Difference]: With dead ends: 14 [2018-10-02 12:22:16,287 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 12:22:16,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:22:16,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 12:22:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-02 12:22:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:22:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-02 12:22:16,290 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-02 12:22:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:16,291 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-02 12:22:16,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:22:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-02 12:22:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:22:16,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:16,292 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1] [2018-10-02 12:22:16,292 INFO L423 AbstractCegarLoop]: === Iteration 8 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:16,292 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:16,292 INFO L82 PathProgramCache]: Analyzing trace with hash -100182971, now seen corresponding path program 7 times [2018-10-02 12:22:16,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:16,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:16,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:16,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:16,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:16,302 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:16,303 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:16,303 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:16,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:16,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:16,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:16,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-02 12:22:16,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:22:16,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:22:16,511 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:16,511 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-02 12:22:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:17,113 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-02 12:22:17,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:22:17,114 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-02 12:22:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:17,115 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:22:17,116 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:22:17,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime [2018-10-02 12:22:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:22:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:22:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:22:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-02 12:22:17,120 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-02 12:22:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:17,120 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-02 12:22:17,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:22:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-02 12:22:17,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:22:17,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:17,121 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2018-10-02 12:22:17,121 INFO L423 AbstractCegarLoop]: === Iteration 9 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:17,122 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:17,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1189293220, now seen corresponding path program 8 times [2018-10-02 12:22:17,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:17,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:17,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:17,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:17,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:17,132 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:17,132 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:17,132 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:17,155 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:17,178 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:17,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:17,183 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:17,490 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:17,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-02 12:22:17,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:22:17,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:22:17,491 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:17,491 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-02 12:22:18,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:18,078 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-02 12:22:18,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:22:18,078 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-02 12:22:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:18,079 INFO L225 Difference]: With dead ends: 16 [2018-10-02 12:22:18,079 INFO L226 Difference]: Without dead ends: 14 [2018-10-02 12:22:18,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:18,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-02 12:22:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-02 12:22:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:22:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-02 12:22:18,084 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-02 12:22:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:18,084 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-02 12:22:18,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:22:18,084 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-02 12:22:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:22:18,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:18,085 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1] [2018-10-02 12:22:18,085 INFO L423 AbstractCegarLoop]: === Iteration 10 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:18,085 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:18,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1786617819, now seen corresponding path program 9 times [2018-10-02 12:22:18,085 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:18,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:18,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:18,086 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:18,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:18,095 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:18,095 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:18,095 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:18,114 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:18,138 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:22:18,138 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:18,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:18,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:18,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2018-10-02 12:22:18,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:22:18,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:22:18,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:18,449 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-02 12:22:19,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:19,191 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-02 12:22:19,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:22:19,192 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-02 12:22:19,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:19,192 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:22:19,192 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:22:19,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:22:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-02 12:22:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:22:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-02 12:22:19,198 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-02 12:22:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:19,198 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-02 12:22:19,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:22:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-02 12:22:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:22:19,199 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:19,199 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2018-10-02 12:22:19,199 INFO L423 AbstractCegarLoop]: === Iteration 11 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:19,199 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash 449420484, now seen corresponding path program 10 times [2018-10-02 12:22:19,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:19,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:19,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:19,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:19,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:19,210 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:19,210 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:19,210 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:19,218 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:19,243 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:19,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:19,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:19,474 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:19,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-02 12:22:19,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:22:19,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:22:19,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:19,475 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-02 12:22:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:20,199 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-02 12:22:20,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:22:20,200 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-02 12:22:20,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:20,201 INFO L225 Difference]: With dead ends: 18 [2018-10-02 12:22:20,201 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:22:20,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:22:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-02 12:22:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:22:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-02 12:22:20,206 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-02 12:22:20,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:20,206 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-02 12:22:20,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:22:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-02 12:22:20,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:22:20,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:20,207 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1] [2018-10-02 12:22:20,208 INFO L423 AbstractCegarLoop]: === Iteration 12 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:20,208 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:20,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1047131141, now seen corresponding path program 11 times [2018-10-02 12:22:20,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:20,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:20,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:20,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:20,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:20,217 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:20,218 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:20,218 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:20,227 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:20,269 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:22:20,269 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:20,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:20,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:20,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-02 12:22:20,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:22:20,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:22:20,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:20,517 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-02 12:22:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:21,507 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-02 12:22:21,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:22:21,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-02 12:22:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:21,509 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:22:21,509 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:22:21,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:22:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-02 12:22:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-02 12:22:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-02 12:22:21,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-02 12:22:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:21,514 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-02 12:22:21,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:22:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-02 12:22:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-02 12:22:21,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:21,515 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1] [2018-10-02 12:22:21,516 INFO L423 AbstractCegarLoop]: === Iteration 13 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:21,516 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:21,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1898674972, now seen corresponding path program 12 times [2018-10-02 12:22:21,516 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:21,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:21,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:21,517 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:21,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:21,535 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:21,535 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:21,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:21,555 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:21,601 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:22:21,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:21,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:21,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:21,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2018-10-02 12:22:21,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:22:21,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:22:21,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:21,854 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-02 12:22:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:22,964 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-02 12:22:22,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:22:22,965 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-02 12:22:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:22,966 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:22:22,966 INFO L226 Difference]: Without dead ends: 18 [2018-10-02 12:22:22,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:22:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-02 12:22:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-02 12:22:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:22:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-02 12:22:22,971 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-02 12:22:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:22,971 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-02 12:22:22,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:22:22,971 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-02 12:22:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:22:22,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:22,972 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1] [2018-10-02 12:22:22,972 INFO L423 AbstractCegarLoop]: === Iteration 14 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:22,973 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:22,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1270616037, now seen corresponding path program 13 times [2018-10-02 12:22:22,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:22,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:22,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:22,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:22,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:22,984 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:22,984 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:22,984 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:22,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:23,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:23,411 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:23,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:23,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-10-02 12:22:23,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:22:23,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:22:23,432 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:23,432 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-02 12:22:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:25,270 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-02 12:22:25,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:22:25,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-02 12:22:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:25,271 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:22:25,271 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:22:25,272 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime [2018-10-02 12:22:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:22:25,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:22:25,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:22:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-02 12:22:25,277 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-02 12:22:25,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:25,277 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-02 12:22:25,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:22:25,277 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-02 12:22:25,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:22:25,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:25,278 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1] [2018-10-02 12:22:25,278 INFO L423 AbstractCegarLoop]: === Iteration 15 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:25,278 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:25,278 INFO L82 PathProgramCache]: Analyzing trace with hash 734389508, now seen corresponding path program 14 times [2018-10-02 12:22:25,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:25,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:25,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:25,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:25,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:25,288 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:25,288 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:25,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:25,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:25,350 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:25,351 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:25,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:25,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:25,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2018-10-02 12:22:25,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:22:25,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:22:25,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:25,963 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-02 12:22:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:27,172 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-02 12:22:27,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:22:27,172 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-02 12:22:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:27,173 INFO L225 Difference]: With dead ends: 22 [2018-10-02 12:22:27,173 INFO L226 Difference]: Without dead ends: 20 [2018-10-02 12:22:27,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime [2018-10-02 12:22:27,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-02 12:22:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-02 12:22:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:22:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-02 12:22:27,178 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-02 12:22:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:27,179 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-02 12:22:27,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:22:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-02 12:22:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:22:27,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:27,180 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1] [2018-10-02 12:22:27,180 INFO L423 AbstractCegarLoop]: === Iteration 16 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:27,180 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:27,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1291236293, now seen corresponding path program 15 times [2018-10-02 12:22:27,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:27,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:27,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:27,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:27,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:27,189 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:27,190 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:27,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:27,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:27,308 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:22:27,308 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:27,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:28,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:28,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-02 12:22:28,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:22:28,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:22:28,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:28,619 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-02 12:22:29,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:29,958 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-02 12:22:29,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:22:29,959 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-02 12:22:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:29,959 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:22:29,960 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:22:29,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:22:29,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:22:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-02 12:22:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:22:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-02 12:22:29,967 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-02 12:22:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:29,968 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-02 12:22:29,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:22:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-02 12:22:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:22:29,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:29,969 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1] [2018-10-02 12:22:29,969 INFO L423 AbstractCegarLoop]: === Iteration 17 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:29,969 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1373617444, now seen corresponding path program 16 times [2018-10-02 12:22:29,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:29,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:29,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:29,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:29,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:29,978 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:29,978 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:29,979 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:29,999 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:30,075 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:30,075 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:30,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:30,575 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:30,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:30,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-02 12:22:30,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:22:30,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:22:30,598 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:30,598 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-02 12:22:32,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:32,169 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-02 12:22:32,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:22:32,169 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-02 12:22:32,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:32,170 INFO L225 Difference]: With dead ends: 24 [2018-10-02 12:22:32,170 INFO L226 Difference]: Without dead ends: 22 [2018-10-02 12:22:32,171 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:22:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-02 12:22:32,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-02 12:22:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:22:32,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-02 12:22:32,176 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-02 12:22:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:32,176 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-02 12:22:32,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:22:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-02 12:22:32,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-02 12:22:32,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:32,177 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1] [2018-10-02 12:22:32,177 INFO L423 AbstractCegarLoop]: === Iteration 18 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:32,177 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:32,178 INFO L82 PathProgramCache]: Analyzing trace with hash -367534171, now seen corresponding path program 17 times [2018-10-02 12:22:32,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:32,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:32,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:32,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:32,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:32,187 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:32,187 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:32,188 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:32,202 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:32,298 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-02 12:22:32,299 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:32,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:32,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:32,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-02 12:22:32,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:22:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:22:32,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:32,675 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-02 12:22:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:34,522 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-02 12:22:34,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:22:34,522 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-02 12:22:34,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:34,523 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:22:34,524 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:22:34,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:22:34,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:22:34,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:22:34,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:22:34,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-02 12:22:34,530 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-02 12:22:34,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:34,530 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-02 12:22:34,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:22:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-02 12:22:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:22:34,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:34,531 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1] [2018-10-02 12:22:34,531 INFO L423 AbstractCegarLoop]: === Iteration 19 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:34,531 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:34,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1491340612, now seen corresponding path program 18 times [2018-10-02 12:22:34,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:34,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:34,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:34,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:34,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:34,542 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:34,543 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:34,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:34,554 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:34,669 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-02 12:22:34,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:34,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:35,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:35,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2018-10-02 12:22:35,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:22:35,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:22:35,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:35,096 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-02 12:22:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:36,857 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-02 12:22:36,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:22:36,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-02 12:22:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:36,859 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:22:36,859 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:22:36,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:22:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:22:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-02 12:22:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:22:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-02 12:22:36,864 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-02 12:22:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:36,864 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-02 12:22:36,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:22:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-02 12:22:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-02 12:22:36,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:36,865 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1] [2018-10-02 12:22:36,865 INFO L423 AbstractCegarLoop]: === Iteration 20 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:36,866 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:36,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1013083259, now seen corresponding path program 19 times [2018-10-02 12:22:36,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:36,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:36,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:36,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:36,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:36,874 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:36,875 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:36,875 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:36,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:37,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:37,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:37,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2018-10-02 12:22:37,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:22:37,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:22:37,444 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:37,444 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-02 12:22:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:39,652 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-02 12:22:39,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:22:39,652 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-02 12:22:39,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:39,653 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:22:39,653 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:22:39,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:22:39,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:22:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:22:39,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:22:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-02 12:22:39,658 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-02 12:22:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:39,658 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-02 12:22:39,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:22:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-02 12:22:39,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:22:39,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:39,659 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1] [2018-10-02 12:22:39,660 INFO L423 AbstractCegarLoop]: === Iteration 21 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:39,660 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:39,660 INFO L82 PathProgramCache]: Analyzing trace with hash -1340811932, now seen corresponding path program 20 times [2018-10-02 12:22:39,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:39,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:39,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:39,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:39,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:39,669 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:39,669 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:39,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:39,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:39,858 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:39,858 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:39,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:40,322 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:40,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-02 12:22:40,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:22:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:22:40,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:40,324 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-02 12:22:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:42,448 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-02 12:22:42,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:22:42,448 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-02 12:22:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:42,449 INFO L225 Difference]: With dead ends: 28 [2018-10-02 12:22:42,449 INFO L226 Difference]: Without dead ends: 26 [2018-10-02 12:22:42,450 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:22:42,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-02 12:22:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-02 12:22:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:22:42,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-02 12:22:42,455 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-02 12:22:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:42,455 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-02 12:22:42,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:22:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-02 12:22:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-02 12:22:42,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:42,456 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1] [2018-10-02 12:22:42,457 INFO L423 AbstractCegarLoop]: === Iteration 22 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:42,457 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1384501093, now seen corresponding path program 21 times [2018-10-02 12:22:42,457 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:42,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:42,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:42,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:42,465 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:42,465 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:42,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:42,480 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:42,655 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-02 12:22:42,655 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:42,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:43,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:43,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-02 12:22:43,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:22:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:22:43,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:43,207 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-02 12:22:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:45,929 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-02 12:22:45,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:22:45,933 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-02 12:22:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:45,934 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:22:45,934 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:22:45,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:22:45,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:22:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:22:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:22:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-02 12:22:45,939 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-02 12:22:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:45,940 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-02 12:22:45,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:22:45,940 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-02 12:22:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:22:45,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:45,941 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1] [2018-10-02 12:22:45,941 INFO L423 AbstractCegarLoop]: === Iteration 23 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:45,941 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:45,941 INFO L82 PathProgramCache]: Analyzing trace with hash -30141052, now seen corresponding path program 22 times [2018-10-02 12:22:45,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:45,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:45,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:45,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:45,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:45,952 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:45,952 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:45,952 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:45,973 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:46,163 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:46,163 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:46,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:46,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:46,682 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2018-10-02 12:22:46,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:22:46,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:22:46,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:46,683 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-02 12:22:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:49,276 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-02 12:22:49,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:22:49,277 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-02 12:22:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:49,277 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:22:49,277 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:22:49,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.4s impTime [2018-10-02 12:22:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:22:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-02 12:22:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:22:49,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-02 12:22:49,283 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-02 12:22:49,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:49,283 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-02 12:22:49,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:22:49,283 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-02 12:22:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-02 12:22:49,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:49,284 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1] [2018-10-02 12:22:49,284 INFO L423 AbstractCegarLoop]: === Iteration 24 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:49,284 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:49,285 INFO L82 PathProgramCache]: Analyzing trace with hash -934374587, now seen corresponding path program 23 times [2018-10-02 12:22:49,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:49,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:49,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:49,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:49,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:49,294 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:49,294 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:49,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:49,302 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:49,546 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-02 12:22:49,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:49,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:50,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:50,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2018-10-02 12:22:50,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:22:50,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:22:50,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:50,123 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-02 12:22:52,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:52,720 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-02 12:22:52,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:22:52,721 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-02 12:22:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:52,722 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:22:52,722 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:22:52,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime [2018-10-02 12:22:52,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:22:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:22:52,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:22:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-02 12:22:52,727 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-02 12:22:52,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:52,727 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-02 12:22:52,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:22:52,727 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-02 12:22:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:22:52,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:52,728 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1] [2018-10-02 12:22:52,728 INFO L423 AbstractCegarLoop]: === Iteration 25 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:52,729 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:52,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1099156900, now seen corresponding path program 24 times [2018-10-02 12:22:52,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:52,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:52,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:52,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:52,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:52,737 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:52,737 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:52,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:52,755 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:53,026 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:22:53,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:53,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:53,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:53,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-02 12:22:53,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:22:53,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:22:53,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:53,655 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-02 12:22:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:56,499 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-02 12:22:56,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:22:56,500 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-02 12:22:56,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:56,500 INFO L225 Difference]: With dead ends: 32 [2018-10-02 12:22:56,501 INFO L226 Difference]: Without dead ends: 30 [2018-10-02 12:22:56,501 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime [2018-10-02 12:22:56,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-02 12:22:56,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-02 12:22:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:22:56,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-02 12:22:56,505 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-02 12:22:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:56,505 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-02 12:22:56,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:22:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-02 12:22:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-02 12:22:56,506 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:56,506 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1] [2018-10-02 12:22:56,507 INFO L423 AbstractCegarLoop]: === Iteration 26 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:22:56,507 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:56,507 INFO L82 PathProgramCache]: Analyzing trace with hash -285876443, now seen corresponding path program 25 times [2018-10-02 12:22:56,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:56,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:56,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:56,508 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:56,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:56,513 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:22:56,514 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:22:56,514 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:22:56,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:56,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:57,435 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:57,455 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:22:57,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-02 12:22:57,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:22:57,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:22:57,456 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:57,456 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-02 12:23:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:00,517 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-02 12:23:00,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:23:00,517 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-02 12:23:00,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:00,518 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:23:00,518 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:23:00,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.5s impTime [2018-10-02 12:23:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:23:00,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:23:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:23:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-02 12:23:00,524 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-02 12:23:00,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:00,524 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-02 12:23:00,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:23:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-02 12:23:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:23:00,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:00,524 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1] [2018-10-02 12:23:00,525 INFO L423 AbstractCegarLoop]: === Iteration 27 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:00,525 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash -272237116, now seen corresponding path program 26 times [2018-10-02 12:23:00,525 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:00,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:00,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:00,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:00,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:00,531 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:00,531 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:00,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:00,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:00,930 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:00,930 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:00,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:02,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:02,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-02 12:23:02,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:23:02,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:23:02,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:02,161 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-02 12:23:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:05,422 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-02 12:23:05,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:23:05,423 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-02 12:23:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:05,424 INFO L225 Difference]: With dead ends: 34 [2018-10-02 12:23:05,424 INFO L226 Difference]: Without dead ends: 32 [2018-10-02 12:23:05,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:23:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-02 12:23:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-02 12:23:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:23:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-02 12:23:05,430 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-02 12:23:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:05,430 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-02 12:23:05,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:23:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-02 12:23:05,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-02 12:23:05,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:05,431 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1] [2018-10-02 12:23:05,431 INFO L423 AbstractCegarLoop]: === Iteration 28 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:05,431 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:05,431 INFO L82 PathProgramCache]: Analyzing trace with hash 150582021, now seen corresponding path program 27 times [2018-10-02 12:23:05,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:05,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:05,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:05,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:05,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:05,439 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:05,440 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:05,440 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:05,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:05,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-02 12:23:05,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:05,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:06,535 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:06,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:06,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2018-10-02 12:23:06,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:23:06,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:23:06,556 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:06,556 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-02 12:23:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:10,047 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-02 12:23:10,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:23:10,048 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-02 12:23:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:10,049 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:23:10,049 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:23:10,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime [2018-10-02 12:23:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:23:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-02 12:23:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-02 12:23:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-02 12:23:10,056 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-02 12:23:10,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:10,056 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-02 12:23:10,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:23:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-02 12:23:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:23:10,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:10,057 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1] [2018-10-02 12:23:10,057 INFO L423 AbstractCegarLoop]: === Iteration 29 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:10,057 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:10,057 INFO L82 PathProgramCache]: Analyzing trace with hash 373073380, now seen corresponding path program 28 times [2018-10-02 12:23:10,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:10,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:10,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:10,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:10,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:10,065 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:10,065 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:10,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:10,080 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:10,590 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:10,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:10,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:11,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:11,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-02 12:23:11,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:23:11,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:23:11,311 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:11,312 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-02 12:23:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:15,028 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-02 12:23:15,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:23:15,030 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-02 12:23:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:15,030 INFO L225 Difference]: With dead ends: 36 [2018-10-02 12:23:15,030 INFO L226 Difference]: Without dead ends: 34 [2018-10-02 12:23:15,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.6s impTime [2018-10-02 12:23:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-02 12:23:15,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-02 12:23:15,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:23:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-02 12:23:15,035 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-02 12:23:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:15,035 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-02 12:23:15,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:23:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-02 12:23:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-02 12:23:15,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:15,036 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1] [2018-10-02 12:23:15,036 INFO L423 AbstractCegarLoop]: === Iteration 30 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:15,036 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:15,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1319629083, now seen corresponding path program 29 times [2018-10-02 12:23:15,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:15,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:15,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:15,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:15,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:15,043 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:15,043 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:15,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:15,054 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:23:15,561 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-02 12:23:15,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:15,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:16,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:16,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2018-10-02 12:23:16,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:23:16,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:23:16,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:16,375 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-02 12:23:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:20,342 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-02 12:23:20,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:23:20,342 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-02 12:23:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:20,343 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:23:20,343 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:23:20,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:23:20,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:23:20,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:23:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:23:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-02 12:23:20,348 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-02 12:23:20,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:20,348 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-02 12:23:20,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:23:20,348 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-02 12:23:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:23:20,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:20,348 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1] [2018-10-02 12:23:20,348 INFO L423 AbstractCegarLoop]: === Iteration 31 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:20,349 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:20,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2041169412, now seen corresponding path program 30 times [2018-10-02 12:23:20,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:20,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:20,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:20,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:20,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:20,356 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:20,356 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:20,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:20,378 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:23:21,236 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-02 12:23:21,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:21,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:22,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:22,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2018-10-02 12:23:22,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:23:22,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:23:22,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:22,085 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-02 12:23:26,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:26,359 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-02 12:23:26,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:23:26,360 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-02 12:23:26,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:26,361 INFO L225 Difference]: With dead ends: 38 [2018-10-02 12:23:26,361 INFO L226 Difference]: Without dead ends: 36 [2018-10-02 12:23:26,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime [2018-10-02 12:23:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-02 12:23:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-02 12:23:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-02 12:23:26,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-02 12:23:26,366 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-02 12:23:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:26,366 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-02 12:23:26,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:23:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-02 12:23:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-02 12:23:26,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:26,367 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1] [2018-10-02 12:23:26,367 INFO L423 AbstractCegarLoop]: === Iteration 32 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:26,368 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1148259643, now seen corresponding path program 31 times [2018-10-02 12:23:26,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:26,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:26,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:26,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:26,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:26,375 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:26,375 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:26,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:26,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:27,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:27,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:27,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2018-10-02 12:23:27,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:23:27,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:23:27,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:27,914 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-02 12:23:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:32,414 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-02 12:23:32,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:23:32,414 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-02 12:23:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:32,415 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:23:32,415 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:23:32,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime [2018-10-02 12:23:32,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:23:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:23:32,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:23:32,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-02 12:23:32,420 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-02 12:23:32,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:32,421 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-02 12:23:32,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:23:32,421 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-02 12:23:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-02 12:23:32,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:32,422 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1] [2018-10-02 12:23:32,422 INFO L423 AbstractCegarLoop]: === Iteration 33 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:32,422 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:32,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1236312540, now seen corresponding path program 32 times [2018-10-02 12:23:32,422 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:32,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:32,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:32,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:32,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:32,428 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:32,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:32,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:32,439 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:33,121 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:33,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:33,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:34,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:34,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2018-10-02 12:23:34,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:23:34,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:23:34,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:34,004 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-02 12:23:38,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:38,736 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-02 12:23:38,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:23:38,736 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-02 12:23:38,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:38,737 INFO L225 Difference]: With dead ends: 40 [2018-10-02 12:23:38,737 INFO L226 Difference]: Without dead ends: 38 [2018-10-02 12:23:38,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.7s impTime [2018-10-02 12:23:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-02 12:23:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-02 12:23:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-02 12:23:38,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-02 12:23:38,742 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-02 12:23:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:38,743 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-02 12:23:38,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:23:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-02 12:23:38,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-02 12:23:38,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:38,743 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1] [2018-10-02 12:23:38,744 INFO L423 AbstractCegarLoop]: === Iteration 34 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:38,744 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash 329014949, now seen corresponding path program 33 times [2018-10-02 12:23:38,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:38,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:38,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:38,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:38,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:38,750 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:38,750 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:38,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:38,765 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:39,466 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-02 12:23:39,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:39,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:40,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:40,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2018-10-02 12:23:40,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:23:40,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:23:40,408 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:40,408 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-02 12:23:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:45,430 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-02 12:23:45,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:23:45,430 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-02 12:23:45,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:45,431 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:23:45,431 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:23:45,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime [2018-10-02 12:23:45,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:23:45,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:23:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:23:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-02 12:23:45,435 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-02 12:23:45,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:45,435 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-02 12:23:45,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:23:45,436 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-02 12:23:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:23:45,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:45,436 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1] [2018-10-02 12:23:45,436 INFO L423 AbstractCegarLoop]: === Iteration 35 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:45,437 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:45,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1609526852, now seen corresponding path program 34 times [2018-10-02 12:23:45,437 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:45,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:45,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:45,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:45,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:45,443 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:45,444 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:45,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:45,455 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:46,208 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:46,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:46,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:47,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:47,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2018-10-02 12:23:47,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:23:47,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:23:47,188 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:47,188 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-02 12:23:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:52,478 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-02 12:23:52,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:23:52,479 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-02 12:23:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:52,480 INFO L225 Difference]: With dead ends: 42 [2018-10-02 12:23:52,480 INFO L226 Difference]: Without dead ends: 40 [2018-10-02 12:23:52,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime [2018-10-02 12:23:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-02 12:23:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-02 12:23:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-02 12:23:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-02 12:23:52,485 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-02 12:23:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:52,485 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-02 12:23:52,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:23:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-02 12:23:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-02 12:23:52,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:52,486 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1] [2018-10-02 12:23:52,486 INFO L423 AbstractCegarLoop]: === Iteration 36 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:23:52,486 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:52,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1644277115, now seen corresponding path program 35 times [2018-10-02 12:23:52,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:52,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:52,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:52,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:52,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:52,492 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:23:52,492 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:23:52,492 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:23:52,514 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:23:53,474 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-02 12:23:53,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:53,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:54,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:23:54,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2018-10-02 12:23:54,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:23:54,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:23:54,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:54,507 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-02 12:24:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:00,064 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-02 12:24:00,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:24:00,064 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-02 12:24:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:00,065 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:24:00,065 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:24:00,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.9s impTime [2018-10-02 12:24:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:24:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:24:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:24:00,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-02 12:24:00,070 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-02 12:24:00,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:00,070 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-02 12:24:00,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:24:00,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-02 12:24:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:24:00,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:00,071 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1] [2018-10-02 12:24:00,071 INFO L423 AbstractCegarLoop]: === Iteration 37 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:00,071 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash 567015012, now seen corresponding path program 36 times [2018-10-02 12:24:00,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:00,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:00,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:00,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:00,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:00,078 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:00,078 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:00,078 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:00,091 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:24:00,835 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:24:00,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:00,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:01,974 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:01,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2018-10-02 12:24:01,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:24:01,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:24:01,974 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:01,975 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-02 12:24:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:07,830 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-02 12:24:07,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:24:07,831 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-02 12:24:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:07,831 INFO L225 Difference]: With dead ends: 44 [2018-10-02 12:24:07,831 INFO L226 Difference]: Without dead ends: 42 [2018-10-02 12:24:07,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime [2018-10-02 12:24:07,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-02 12:24:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-02 12:24:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-02 12:24:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-02 12:24:07,836 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-02 12:24:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:07,836 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-02 12:24:07,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:24:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-02 12:24:07,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-02 12:24:07,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:07,837 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1] [2018-10-02 12:24:07,837 INFO L423 AbstractCegarLoop]: === Iteration 38 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:07,837 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:07,837 INFO L82 PathProgramCache]: Analyzing trace with hash 397594213, now seen corresponding path program 37 times [2018-10-02 12:24:07,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:07,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:07,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:07,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:07,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:07,844 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:07,844 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:07,844 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:07,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:24:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:08,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:10,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:10,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2018-10-02 12:24:10,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:24:10,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:24:10,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:10,669 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-02 12:24:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:16,880 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-02 12:24:16,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:24:16,880 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-02 12:24:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:16,881 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:24:16,881 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:24:16,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime [2018-10-02 12:24:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:24:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:24:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:24:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-02 12:24:16,886 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-02 12:24:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:16,886 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-02 12:24:16,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:24:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-02 12:24:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:24:16,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:16,887 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1] [2018-10-02 12:24:16,887 INFO L423 AbstractCegarLoop]: === Iteration 39 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:16,887 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash -559483260, now seen corresponding path program 38 times [2018-10-02 12:24:16,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:16,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:16,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:16,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:24:16,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:16,894 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:16,894 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:16,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:16,904 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:24:17,893 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:24:17,893 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:17,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:19,078 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:19,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:19,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-02 12:24:19,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:24:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:24:19,098 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:19,098 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-02 12:24:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:25,610 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-02 12:24:25,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:24:25,610 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-02 12:24:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:25,611 INFO L225 Difference]: With dead ends: 46 [2018-10-02 12:24:25,611 INFO L226 Difference]: Without dead ends: 44 [2018-10-02 12:24:25,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 1.0s impTime [2018-10-02 12:24:25,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-02 12:24:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-02 12:24:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-02 12:24:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-02 12:24:25,616 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-02 12:24:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:25,616 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-02 12:24:25,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:24:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-02 12:24:25,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-02 12:24:25,617 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:25,617 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1] [2018-10-02 12:24:25,617 INFO L423 AbstractCegarLoop]: === Iteration 40 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:25,617 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:25,617 INFO L82 PathProgramCache]: Analyzing trace with hash -164113851, now seen corresponding path program 39 times [2018-10-02 12:24:25,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:25,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:25,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:25,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:25,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:25,628 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:25,629 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:25,629 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:25,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:24:26,804 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-02 12:24:26,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:26,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:28,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:28,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2018-10-02 12:24:28,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:24:28,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:24:28,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:28,049 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-02 12:24:34,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:34,844 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-02 12:24:34,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:24:34,844 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-02 12:24:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:34,845 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:24:34,845 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:24:34,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.1s impTime [2018-10-02 12:24:34,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:24:34,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-02 12:24:34,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:24:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-02 12:24:34,851 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-02 12:24:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:34,851 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-02 12:24:34,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:24:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-02 12:24:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:24:34,851 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:34,851 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1] [2018-10-02 12:24:34,851 INFO L423 AbstractCegarLoop]: === Iteration 41 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:34,852 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:34,852 INFO L82 PathProgramCache]: Analyzing trace with hash -792564060, now seen corresponding path program 40 times [2018-10-02 12:24:34,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:34,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:34,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:34,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:34,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:34,858 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:34,858 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:34,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:34,874 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:24:36,406 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:24:36,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:36,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:37,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:37,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2018-10-02 12:24:37,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:24:37,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:24:37,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:37,703 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-02 12:24:44,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:44,831 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-02 12:24:44,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:24:44,832 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-02 12:24:44,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:44,832 INFO L225 Difference]: With dead ends: 48 [2018-10-02 12:24:44,832 INFO L226 Difference]: Without dead ends: 46 [2018-10-02 12:24:44,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 1.1s impTime [2018-10-02 12:24:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-02 12:24:44,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-02 12:24:44,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-02 12:24:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-02 12:24:44,836 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-02 12:24:44,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:44,837 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-02 12:24:44,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:24:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-02 12:24:44,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-02 12:24:44,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:44,837 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1] [2018-10-02 12:24:44,837 INFO L423 AbstractCegarLoop]: === Iteration 42 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:44,837 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:44,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1200315941, now seen corresponding path program 41 times [2018-10-02 12:24:44,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:44,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:44,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:44,838 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:44,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:44,845 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:44,845 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:44,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-02 12:24:44,855 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:46,376 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-02 12:24:46,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:46,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:47,739 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:47,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:47,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-02 12:24:47,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:24:47,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:24:47,762 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:47,762 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-02 12:24:55,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:55,211 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-02 12:24:55,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:24:55,211 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-02 12:24:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:55,212 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:24:55,212 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:24:55,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.2s impTime [2018-10-02 12:24:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:24:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:24:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:24:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-02 12:24:55,218 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-02 12:24:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:55,218 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-02 12:24:55,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:24:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-02 12:24:55,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:24:55,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:55,219 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1] [2018-10-02 12:24:55,219 INFO L423 AbstractCegarLoop]: === Iteration 43 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:24:55,219 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:55,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1444913468, now seen corresponding path program 42 times [2018-10-02 12:24:55,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:55,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:55,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:55,220 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:55,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:55,225 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:24:55,225 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:24:55,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:24:55,234 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:24:57,017 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-02 12:24:57,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:57,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:58,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:24:58,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-02 12:24:58,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:24:58,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:24:58,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:58,428 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-02 12:25:06,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:25:06,223 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-02 12:25:06,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:25:06,223 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-02 12:25:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:25:06,224 INFO L225 Difference]: With dead ends: 50 [2018-10-02 12:25:06,224 INFO L226 Difference]: Without dead ends: 48 [2018-10-02 12:25:06,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime [2018-10-02 12:25:06,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-02 12:25:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-02 12:25:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-02 12:25:06,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-02 12:25:06,229 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-02 12:25:06,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:25:06,229 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-02 12:25:06,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:25:06,229 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-02 12:25:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-02 12:25:06,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:25:06,230 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1] [2018-10-02 12:25:06,230 INFO L423 AbstractCegarLoop]: === Iteration 44 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:25:06,230 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:25:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1842646523, now seen corresponding path program 43 times [2018-10-02 12:25:06,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:25:06,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:25:06,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:06,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:25:06,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:06,237 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:25:06,237 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:25:06,237 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:25:06,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:25:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:25:07,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:25:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:25:09,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:25:09,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2018-10-02 12:25:09,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:25:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:25:09,337 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:25:09,338 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-02 12:25:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:25:17,488 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-02 12:25:17,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:25:17,488 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-02 12:25:17,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:25:17,489 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:25:17,489 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:25:17,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.3s impTime [2018-10-02 12:25:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:25:17,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:25:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:25:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-02 12:25:17,494 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-02 12:25:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:25:17,494 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-02 12:25:17,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:25:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-02 12:25:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:25:17,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:25:17,495 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1] [2018-10-02 12:25:17,495 INFO L423 AbstractCegarLoop]: === Iteration 45 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:25:17,496 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:25:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1287469340, now seen corresponding path program 44 times [2018-10-02 12:25:17,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:25:17,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:25:17,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:17,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:25:17,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:17,502 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:25:17,503 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:25:17,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:25:17,517 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:25:19,218 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:25:19,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:25:19,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:25:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:25:20,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:25:20,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2018-10-02 12:25:20,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:25:20,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:25:20,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:25:20,770 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-02 12:25:29,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:25:29,280 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-02 12:25:29,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:25:29,280 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-02 12:25:29,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:25:29,281 INFO L225 Difference]: With dead ends: 52 [2018-10-02 12:25:29,281 INFO L226 Difference]: Without dead ends: 50 [2018-10-02 12:25:29,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.3s impTime [2018-10-02 12:25:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-02 12:25:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-02 12:25:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-02 12:25:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-02 12:25:29,285 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-02 12:25:29,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:25:29,285 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-02 12:25:29,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:25:29,285 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-02 12:25:29,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-02 12:25:29,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:25:29,286 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1] [2018-10-02 12:25:29,286 INFO L423 AbstractCegarLoop]: === Iteration 46 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:25:29,286 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:25:29,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1256845851, now seen corresponding path program 45 times [2018-10-02 12:25:29,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:25:29,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:25:29,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:29,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:25:29,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:29,293 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:25:29,293 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:25:29,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-02 12:25:29,306 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:25:31,423 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-02 12:25:31,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:25:31,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:25:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:25:33,098 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:25:33,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2018-10-02 12:25:33,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:25:33,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:25:33,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:25:33,099 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-02 12:25:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:25:41,957 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-02 12:25:41,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:25:41,957 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-02 12:25:41,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:25:41,958 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:25:41,958 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:25:41,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime [2018-10-02 12:25:41,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:25:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:25:41,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:25:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-02 12:25:41,963 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-02 12:25:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:25:41,963 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-02 12:25:41,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:25:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-02 12:25:41,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:25:41,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:25:41,964 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1] [2018-10-02 12:25:41,964 INFO L423 AbstractCegarLoop]: === Iteration 47 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:25:41,964 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:25:41,965 INFO L82 PathProgramCache]: Analyzing trace with hash -307517692, now seen corresponding path program 46 times [2018-10-02 12:25:41,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:25:41,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:25:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:41,965 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:25:41,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:41,970 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:25:41,970 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:25:41,970 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:25:41,984 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:25:44,443 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:25:44,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:25:44,452 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:25:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:25:46,159 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:25:46,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-02 12:25:46,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:25:46,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:25:46,160 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:25:46,160 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-02 12:25:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:25:55,372 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-02 12:25:55,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:25:55,373 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-02 12:25:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:25:55,373 INFO L225 Difference]: With dead ends: 54 [2018-10-02 12:25:55,374 INFO L226 Difference]: Without dead ends: 52 [2018-10-02 12:25:55,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime [2018-10-02 12:25:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-02 12:25:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-02 12:25:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-02 12:25:55,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-02 12:25:55,379 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-02 12:25:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:25:55,379 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-02 12:25:55,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:25:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-02 12:25:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-02 12:25:55,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:25:55,379 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1] [2018-10-02 12:25:55,379 INFO L423 AbstractCegarLoop]: === Iteration 48 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:25:55,380 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:25:55,380 INFO L82 PathProgramCache]: Analyzing trace with hash -943115835, now seen corresponding path program 47 times [2018-10-02 12:25:55,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:25:55,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:25:55,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:55,380 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:25:55,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:25:55,385 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:25:55,385 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:25:55,385 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:25:55,394 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:25:58,028 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-02 12:25:58,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:25:58,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:25:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:25:59,754 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:25:59,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-02 12:25:59,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:25:59,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:25:59,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:25:59,755 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-02 12:26:09,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:26:09,302 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-02 12:26:09,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:26:09,303 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-02 12:26:09,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:26:09,304 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:26:09,304 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:26:09,304 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.5s impTime [2018-10-02 12:26:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:26:09,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:26:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:26:09,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-02 12:26:09,309 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-02 12:26:09,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:26:09,309 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-02 12:26:09,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:26:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-02 12:26:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:26:09,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:26:09,310 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1] [2018-10-02 12:26:09,310 INFO L423 AbstractCegarLoop]: === Iteration 49 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:26:09,311 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:26:09,311 INFO L82 PathProgramCache]: Analyzing trace with hash 828178212, now seen corresponding path program 48 times [2018-10-02 12:26:09,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:26:09,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:26:09,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:26:09,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:26:09,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:26:09,318 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:26:09,318 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:26:09,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-02 12:26:09,335 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:26:12,227 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:26:12,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:26:12,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:26:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:26:14,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:26:14,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2018-10-02 12:26:14,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:26:14,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:26:14,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:26:14,027 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-02 12:26:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:26:23,972 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-02 12:26:23,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:26:23,973 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-02 12:26:23,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:26:23,974 INFO L225 Difference]: With dead ends: 56 [2018-10-02 12:26:23,974 INFO L226 Difference]: Without dead ends: 54 [2018-10-02 12:26:23,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.6s impTime [2018-10-02 12:26:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-02 12:26:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-02 12:26:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-02 12:26:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-02 12:26:23,979 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-02 12:26:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:26:23,979 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-02 12:26:23,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:26:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-02 12:26:23,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:26:23,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:26:23,980 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1] [2018-10-02 12:26:23,980 INFO L423 AbstractCegarLoop]: === Iteration 50 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-02 12:26:23,981 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:26:23,981 INFO L82 PathProgramCache]: Analyzing trace with hash -96281179, now seen corresponding path program 49 times [2018-10-02 12:26:23,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:26:23,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:26:23,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:26:23,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:26:23,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:26:23,987 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-02 12:26:23,987 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-02 12:26:23,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-02 12:26:24,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:26:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:26:26,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:26:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:26:28,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-02 12:26:28,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2018-10-02 12:26:28,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:26:28,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:26:28,792 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:26:28,792 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. Received shutdown request... [2018-10-02 12:26:29,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:26:29,254 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:26:29,259 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:26:29,259 INFO L202 PluginConnector]: Adding new model Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:26:29 BoogieIcfgContainer [2018-10-02 12:26:29,259 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:26:29,260 INFO L168 Benchmark]: Toolchain (without parser) took 257677.26 ms. Allocated memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: -53.0 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 329.3 MB). Peak memory consumption was 276.4 MB. Max. memory is 7.1 GB. [2018-10-02 12:26:29,261 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:26:29,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:26:29,262 INFO L168 Benchmark]: Boogie Preprocessor took 23.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-02 12:26:29,263 INFO L168 Benchmark]: RCFGBuilder took 275.96 ms. Allocated memory is still 1.6 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. [2018-10-02 12:26:29,264 INFO L168 Benchmark]: TraceAbstraction took 257330.14 ms. Allocated memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: -53.0 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 308.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. [2018-10-02 12:26:29,267 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 0.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.76 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.20 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 275.96 ms. Allocated memory is still 1.6 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 257330.14 ms. Allocated memory was 1.6 GB in the beginning and 1.5 GB in the end (delta: -53.0 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 308.2 MB). Peak memory consumption was 255.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9]: Timeout (TraceAbstraction) Unable to prove that procedure postcondition always holds (line 9). Cancelled while BasicCegarLoop was constructing difference of abstraction (54states) and FLOYD_HOARE automaton (currently 4 states, 53 states before enhancement), while ReachableStatesComputation was computing reachable states (3 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 257.2s OverallTime, 50 OverallIterations, 49 TraceHistogramMax, 181.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 56 SDslu, 49 SDs, 0 SdLazy, 46903 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1424 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 49 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 33.3s SatisfiabilityAnalysisTime, 39.6s InterpolantComputationTime, 1425 NumberOfCodeBlocks, 1425 NumberOfCodeBlocksAsserted, 374 NumberOfCheckSat, 1375 ConstructedInterpolants, 0 QuantifiedInterpolants, 513973 SizeOfPredicates, 50 NumberOfNonLiveVariables, 6575 ConjunctsInSsa, 5200 ConjunctsInUnsatCore, 50 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20825 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Mult1-Safe.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-26-29-278.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Mult1-Safe.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-26-29-278.csv Completed graceful shutdown