java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:57:38,449 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:57:38,452 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:57:38,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:57:38,464 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:57:38,465 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:57:38,466 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:57:38,468 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:57:38,470 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:57:38,471 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:57:38,472 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 21:57:38,472 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 21:57:38,473 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 21:57:38,474 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 21:57:38,475 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 21:57:38,476 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 21:57:38,477 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 21:57:38,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 21:57:38,481 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 21:57:38,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 21:57:38,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 21:57:38,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 21:57:38,487 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-26 21:57:38,496 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-26 21:57:38,525 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:57:38,527 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:57:38,528 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:57:38,529 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:57:38,529 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:57:38,529 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:57:38,530 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:57:38,530 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:57:38,530 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:57:38,530 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:57:38,530 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:57:38,531 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:57:38,531 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:57:38,531 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:57:38,531 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:57:38,531 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:57:38,535 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:57:38,535 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:57:38,535 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:57:38,536 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:57:38,536 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:57:38,536 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:57:38,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:57:38,537 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:57:38,537 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:57:38,537 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:57:38,537 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:57:38,537 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:57:38,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:57:38,538 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:57:38,538 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:57:38,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:57:38,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:57:38,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:57:38,612 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:57:38,613 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:57:38,613 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl [2018-09-26 21:57:38,614 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg.bpl' [2018-09-26 21:57:38,659 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:57:38,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:57:38,663 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:57:38,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:57:38,664 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:57:38,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,702 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 21:57:38,702 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 21:57:38,702 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 21:57:38,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:57:38,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:57:38,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:57:38,705 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:57:38,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... [2018-09-26 21:57:38,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:57:38,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:57:38,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:57:38,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:57:38,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:57:38,804 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-26 21:57:38,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-26 21:57:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-26 21:57:39,038 INFO L343 CfgBuilder]: Using library mode [2018-09-26 21:57:39,039 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:57:39 BoogieIcfgContainer [2018-09-26 21:57:39,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:57:39,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:57:39,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:57:39,046 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:57:39,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:57:38" (1/2) ... [2018-09-26 21:57:39,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c4773 and model type Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:57:39, skipping insertion in model container [2018-09-26 21:57:39,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:57:39" (2/2) ... [2018-09-26 21:57:39,050 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg.bpl [2018-09-26 21:57:39,063 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:57:39,073 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:57:39,120 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:57:39,121 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:57:39,121 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:57:39,121 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:57:39,122 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:57:39,122 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:57:39,122 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:57:39,122 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:57:39,122 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:57:39,137 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 21:57:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-26 21:57:39,143 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:39,144 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-26 21:57:39,145 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:39,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:39,153 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-09-26 21:57:39,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:39,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:39,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:39,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:39,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:39,367 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:57:39,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:57:39,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:57:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:57:39,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:39,390 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 21:57:39,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:39,659 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-09-26 21:57:39,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:57:39,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-26 21:57:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:39,677 INFO L225 Difference]: With dead ends: 13 [2018-09-26 21:57:39,677 INFO L226 Difference]: Without dead ends: 5 [2018-09-26 21:57:39,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:39,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-26 21:57:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-26 21:57:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-26 21:57:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-26 21:57:39,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-26 21:57:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:39,716 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-26 21:57:39,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:57:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-26 21:57:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 21:57:39,717 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:39,717 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 21:57:39,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:39,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:39,718 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-09-26 21:57:39,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:39,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:39,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:39,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:39,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:39,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:39,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:39,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:39,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:39,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:39,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:39,932 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-26 21:57:39,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:57:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:57:39,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:39,934 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-09-26 21:57:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:40,061 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-09-26 21:57:40,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 21:57:40,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-09-26 21:57:40,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:40,062 INFO L225 Difference]: With dead ends: 8 [2018-09-26 21:57:40,062 INFO L226 Difference]: Without dead ends: 6 [2018-09-26 21:57:40,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:40,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-09-26 21:57:40,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-09-26 21:57:40,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-09-26 21:57:40,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-09-26 21:57:40,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-09-26 21:57:40,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:40,067 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-09-26 21:57:40,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:57:40,068 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-09-26 21:57:40,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 21:57:40,068 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:40,068 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-09-26 21:57:40,068 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:40,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-09-26 21:57:40,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:40,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:40,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:40,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:40,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:40,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:40,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:40,151 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:40,165 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:40,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:40,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:40,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:40,209 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-26 21:57:40,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 21:57:40,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 21:57:40,209 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:40,210 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-09-26 21:57:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:40,367 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-09-26 21:57:40,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:57:40,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-26 21:57:40,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:40,368 INFO L225 Difference]: With dead ends: 9 [2018-09-26 21:57:40,370 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 21:57:40,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 21:57:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 21:57:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 21:57:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 21:57:40,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-09-26 21:57:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:40,375 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 21:57:40,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 21:57:40,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 21:57:40,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 21:57:40,376 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:40,378 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-09-26 21:57:40,378 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:40,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:40,378 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-09-26 21:57:40,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:40,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:40,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:40,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:40,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:40,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:40,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:40,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:40,636 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-26 21:57:40,637 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:40,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:40,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:40,690 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:40,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-26 21:57:40,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:57:40,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:57:40,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:40,692 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-09-26 21:57:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:40,826 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-09-26 21:57:40,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:57:40,827 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-09-26 21:57:40,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:40,828 INFO L225 Difference]: With dead ends: 10 [2018-09-26 21:57:40,828 INFO L226 Difference]: Without dead ends: 8 [2018-09-26 21:57:40,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-09-26 21:57:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-09-26 21:57:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-09-26 21:57:40,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-09-26 21:57:40,831 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-09-26 21:57:40,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:40,832 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-09-26 21:57:40,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:57:40,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-09-26 21:57:40,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 21:57:40,832 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:40,833 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-09-26 21:57:40,833 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:40,833 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:40,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-09-26 21:57:40,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:40,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:40,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:40,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:40,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:40,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:40,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:40,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:40,946 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:40,969 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:40,969 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:40,970 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:41,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:41,106 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-26 21:57:41,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 21:57:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 21:57:41,107 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:41,107 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-09-26 21:57:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:41,172 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-26 21:57:41,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 21:57:41,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-26 21:57:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:41,174 INFO L225 Difference]: With dead ends: 11 [2018-09-26 21:57:41,174 INFO L226 Difference]: Without dead ends: 9 [2018-09-26 21:57:41,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:41,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-26 21:57:41,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-26 21:57:41,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 21:57:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-26 21:57:41,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-09-26 21:57:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:41,178 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-26 21:57:41,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 21:57:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-26 21:57:41,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 21:57:41,179 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:41,179 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-09-26 21:57:41,179 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:41,179 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:41,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-09-26 21:57:41,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:41,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:41,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:41,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:41,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:41,257 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:41,258 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:41,267 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:41,278 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-09-26 21:57:41,278 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:41,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:41,354 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:41,354 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-26 21:57:41,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 21:57:41,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 21:57:41,355 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:41,355 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-09-26 21:57:41,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:41,597 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-09-26 21:57:41,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 21:57:41,599 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-26 21:57:41,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:41,600 INFO L225 Difference]: With dead ends: 12 [2018-09-26 21:57:41,600 INFO L226 Difference]: Without dead ends: 10 [2018-09-26 21:57:41,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:41,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-26 21:57:41,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-26 21:57:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-26 21:57:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-26 21:57:41,608 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-09-26 21:57:41,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:41,608 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-26 21:57:41,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 21:57:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-26 21:57:41,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-26 21:57:41,611 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:41,611 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-09-26 21:57:41,611 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:41,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:41,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-09-26 21:57:41,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:41,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:41,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:41,615 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:41,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:41,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:41,938 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:41,938 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:41,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:41,961 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-09-26 21:57:41,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:41,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,030 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:42,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-26 21:57:42,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-26 21:57:42,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-26 21:57:42,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:42,031 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-09-26 21:57:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:42,154 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-26 21:57:42,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-26 21:57:42,156 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-09-26 21:57:42,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:42,156 INFO L225 Difference]: With dead ends: 13 [2018-09-26 21:57:42,156 INFO L226 Difference]: Without dead ends: 11 [2018-09-26 21:57:42,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:42,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-26 21:57:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-26 21:57:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-26 21:57:42,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-26 21:57:42,159 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-09-26 21:57:42,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:42,160 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-26 21:57:42,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-26 21:57:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-26 21:57:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 21:57:42,160 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:42,161 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-09-26 21:57:42,161 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:42,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:42,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-09-26 21:57:42,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:42,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:42,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:42,163 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:42,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:42,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:42,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:42,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,397 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:42,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-26 21:57:42,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-26 21:57:42,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-26 21:57:42,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:42,399 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-09-26 21:57:42,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:42,505 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-09-26 21:57:42,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 21:57:42,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-09-26 21:57:42,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:42,508 INFO L225 Difference]: With dead ends: 14 [2018-09-26 21:57:42,508 INFO L226 Difference]: Without dead ends: 12 [2018-09-26 21:57:42,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-26 21:57:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-26 21:57:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-26 21:57:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-26 21:57:42,511 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-26 21:57:42,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:42,511 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-26 21:57:42,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-26 21:57:42,512 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-26 21:57:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-26 21:57:42,512 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:42,512 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-09-26 21:57:42,512 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:42,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:42,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-09-26 21:57:42,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:42,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:42,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:42,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:42,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,642 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:42,642 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:42,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:42,659 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:42,659 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:42,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:42,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:42,732 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-26 21:57:42,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-26 21:57:42,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-26 21:57:42,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:42,734 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-09-26 21:57:42,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:42,989 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-26 21:57:42,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-26 21:57:42,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-09-26 21:57:42,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:42,990 INFO L225 Difference]: With dead ends: 15 [2018-09-26 21:57:42,990 INFO L226 Difference]: Without dead ends: 13 [2018-09-26 21:57:42,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-26 21:57:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-26 21:57:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-26 21:57:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-26 21:57:42,994 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-09-26 21:57:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:42,994 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-26 21:57:42,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-26 21:57:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-26 21:57:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 21:57:42,995 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:42,995 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-09-26 21:57:42,996 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:42,996 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-09-26 21:57:42,996 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:42,996 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:42,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:42,997 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:42,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:43,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:43,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:43,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:43,534 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-26 21:57:43,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:43,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:43,605 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:43,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-26 21:57:43,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-26 21:57:43,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-26 21:57:43,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:43,607 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-09-26 21:57:43,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:43,727 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-09-26 21:57:43,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-26 21:57:43,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-09-26 21:57:43,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:43,729 INFO L225 Difference]: With dead ends: 16 [2018-09-26 21:57:43,729 INFO L226 Difference]: Without dead ends: 14 [2018-09-26 21:57:43,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:43,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-26 21:57:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-26 21:57:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-26 21:57:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-26 21:57:43,733 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-09-26 21:57:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:43,733 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-26 21:57:43,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-26 21:57:43,733 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-26 21:57:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-26 21:57:43,734 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:43,734 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-09-26 21:57:43,734 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:43,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-09-26 21:57:43,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:43,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:43,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:43,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:43,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:43,925 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:43,925 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:43,934 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:43,944 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:43,944 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:43,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:44,043 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:44,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-26 21:57:44,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-26 21:57:44,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-26 21:57:44,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:44,044 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-09-26 21:57:44,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:44,142 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-26 21:57:44,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-26 21:57:44,142 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-09-26 21:57:44,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:44,143 INFO L225 Difference]: With dead ends: 17 [2018-09-26 21:57:44,144 INFO L226 Difference]: Without dead ends: 15 [2018-09-26 21:57:44,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-26 21:57:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-26 21:57:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-26 21:57:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-26 21:57:44,148 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-09-26 21:57:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:44,149 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-26 21:57:44,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-26 21:57:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-26 21:57:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 21:57:44,149 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:44,150 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-09-26 21:57:44,150 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:44,150 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-09-26 21:57:44,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:44,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:44,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:44,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:44,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:44,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:44,342 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:44,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:44,343 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:44,351 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:44,365 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-09-26 21:57:44,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:44,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:44,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:44,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-26 21:57:44,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-26 21:57:44,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-26 21:57:44,445 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:44,446 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-09-26 21:57:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:44,625 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-09-26 21:57:44,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-26 21:57:44,626 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-26 21:57:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:44,626 INFO L225 Difference]: With dead ends: 18 [2018-09-26 21:57:44,626 INFO L226 Difference]: Without dead ends: 16 [2018-09-26 21:57:44,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:44,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-26 21:57:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-26 21:57:44,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-26 21:57:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-26 21:57:44,630 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-09-26 21:57:44,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:44,631 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-26 21:57:44,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-26 21:57:44,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-26 21:57:44,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-26 21:57:44,631 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:44,632 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-09-26 21:57:44,632 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:44,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-09-26 21:57:44,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:44,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:44,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:44,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:44,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:44,786 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:44,786 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:44,786 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:44,798 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:44,814 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-26 21:57:44,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:44,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:44,874 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:44,898 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:44,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-26 21:57:44,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-26 21:57:44,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-26 21:57:44,899 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:44,900 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-09-26 21:57:45,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:45,008 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-26 21:57:45,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-26 21:57:45,009 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-26 21:57:45,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:45,010 INFO L225 Difference]: With dead ends: 19 [2018-09-26 21:57:45,010 INFO L226 Difference]: Without dead ends: 17 [2018-09-26 21:57:45,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-26 21:57:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-26 21:57:45,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-26 21:57:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-26 21:57:45,015 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-09-26 21:57:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:45,015 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-26 21:57:45,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-26 21:57:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-26 21:57:45,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-26 21:57:45,016 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:45,016 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-09-26 21:57:45,016 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:45,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:45,017 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-09-26 21:57:45,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:45,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:45,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:45,018 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:45,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:45,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:45,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:45,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:45,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:45,347 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:45,347 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-26 21:57:45,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-26 21:57:45,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-26 21:57:45,350 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:45,351 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-09-26 21:57:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:47,002 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-09-26 21:57:47,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-26 21:57:47,003 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-09-26 21:57:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:47,003 INFO L225 Difference]: With dead ends: 20 [2018-09-26 21:57:47,003 INFO L226 Difference]: Without dead ends: 18 [2018-09-26 21:57:47,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:47,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-26 21:57:47,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-26 21:57:47,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-26 21:57:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-26 21:57:47,007 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-09-26 21:57:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:47,007 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-26 21:57:47,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-26 21:57:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-26 21:57:47,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-26 21:57:47,007 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:47,008 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-09-26 21:57:47,008 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:47,008 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:47,008 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-09-26 21:57:47,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:47,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:47,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:47,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:47,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:47,274 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:47,274 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:47,282 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:47,293 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:47,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:47,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:47,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:47,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-26 21:57:47,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-26 21:57:47,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-26 21:57:47,378 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:47,378 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-09-26 21:57:47,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:47,514 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-26 21:57:47,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-26 21:57:47,515 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-09-26 21:57:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:47,516 INFO L225 Difference]: With dead ends: 21 [2018-09-26 21:57:47,516 INFO L226 Difference]: Without dead ends: 19 [2018-09-26 21:57:47,516 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:47,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-26 21:57:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-26 21:57:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 21:57:47,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-26 21:57:47,520 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-09-26 21:57:47,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:47,520 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-26 21:57:47,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-26 21:57:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-26 21:57:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-26 21:57:47,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:47,521 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-09-26 21:57:47,521 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:47,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-09-26 21:57:47,522 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:47,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:47,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:47,523 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:47,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:47,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:47,685 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:47,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:47,710 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-09-26 21:57:47,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:47,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:47,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:47,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-26 21:57:47,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-26 21:57:47,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-26 21:57:47,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:47,829 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-09-26 21:57:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:47,965 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-09-26 21:57:47,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-26 21:57:47,966 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-26 21:57:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:47,967 INFO L225 Difference]: With dead ends: 22 [2018-09-26 21:57:47,967 INFO L226 Difference]: Without dead ends: 20 [2018-09-26 21:57:47,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:47,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-26 21:57:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-26 21:57:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-26 21:57:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-26 21:57:47,973 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-09-26 21:57:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:47,973 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-26 21:57:47,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-26 21:57:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-26 21:57:47,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-26 21:57:47,974 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:47,974 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-09-26 21:57:47,974 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:47,975 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:47,975 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-09-26 21:57:47,975 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:47,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:47,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:47,976 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:47,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:48,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:48,451 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:48,459 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:48,472 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:48,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:48,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:48,550 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:48,550 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-26 21:57:48,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-26 21:57:48,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-26 21:57:48,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:48,551 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-09-26 21:57:48,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:48,708 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-26 21:57:48,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-26 21:57:48,709 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-09-26 21:57:48,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:48,710 INFO L225 Difference]: With dead ends: 23 [2018-09-26 21:57:48,710 INFO L226 Difference]: Without dead ends: 21 [2018-09-26 21:57:48,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-26 21:57:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-26 21:57:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-26 21:57:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-26 21:57:48,713 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-09-26 21:57:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:48,714 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-26 21:57:48,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-26 21:57:48,714 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-26 21:57:48,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-26 21:57:48,714 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:48,715 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-09-26 21:57:48,715 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:48,715 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:48,715 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-09-26 21:57:48,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:48,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:48,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:48,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:48,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:48,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:48,962 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:48,970 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:48,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-09-26 21:57:48,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:48,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:49,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:49,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-26 21:57:49,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-26 21:57:49,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-26 21:57:49,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:49,127 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-09-26 21:57:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:49,271 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-09-26 21:57:49,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-26 21:57:49,271 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-09-26 21:57:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:49,272 INFO L225 Difference]: With dead ends: 24 [2018-09-26 21:57:49,272 INFO L226 Difference]: Without dead ends: 22 [2018-09-26 21:57:49,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:49,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-26 21:57:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-26 21:57:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-26 21:57:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-26 21:57:49,276 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-09-26 21:57:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:49,276 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-26 21:57:49,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-26 21:57:49,277 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-26 21:57:49,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-26 21:57:49,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:49,277 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-09-26 21:57:49,278 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:49,278 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:49,278 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-09-26 21:57:49,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:49,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:49,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:49,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:49,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:49,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:49,406 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:49,416 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:49,432 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-09-26 21:57:49,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:49,434 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:49,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:49,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-26 21:57:49,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-26 21:57:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-26 21:57:49,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:49,542 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-09-26 21:57:49,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:49,790 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-26 21:57:49,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-26 21:57:49,790 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-09-26 21:57:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:49,791 INFO L225 Difference]: With dead ends: 25 [2018-09-26 21:57:49,791 INFO L226 Difference]: Without dead ends: 23 [2018-09-26 21:57:49,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:49,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-26 21:57:49,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-26 21:57:49,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-26 21:57:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-26 21:57:49,795 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-09-26 21:57:49,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:49,795 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-26 21:57:49,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-26 21:57:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-26 21:57:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-26 21:57:49,796 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:49,796 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-09-26 21:57:49,797 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:49,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-09-26 21:57:49,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:49,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:49,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:49,973 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:49,973 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:49,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:50,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:50,149 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:50,149 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-26 21:57:50,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-26 21:57:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-26 21:57:50,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:50,150 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-09-26 21:57:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:51,032 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-09-26 21:57:51,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-26 21:57:51,032 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-09-26 21:57:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:51,034 INFO L225 Difference]: With dead ends: 26 [2018-09-26 21:57:51,034 INFO L226 Difference]: Without dead ends: 24 [2018-09-26 21:57:51,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-26 21:57:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-09-26 21:57:51,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-26 21:57:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-09-26 21:57:51,037 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-09-26 21:57:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:51,037 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-09-26 21:57:51,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-26 21:57:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-09-26 21:57:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-09-26 21:57:51,038 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:51,038 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-09-26 21:57:51,038 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:51,038 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:51,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-09-26 21:57:51,038 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:51,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:51,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:51,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:51,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:51,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:51,331 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:51,338 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:51,351 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:51,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:51,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:51,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:51,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-26 21:57:51,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-26 21:57:51,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-26 21:57:51,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:51,582 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-09-26 21:57:51,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:51,801 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-26 21:57:51,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-26 21:57:51,802 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-09-26 21:57:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:51,803 INFO L225 Difference]: With dead ends: 27 [2018-09-26 21:57:51,803 INFO L226 Difference]: Without dead ends: 25 [2018-09-26 21:57:51,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:51,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-09-26 21:57:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-09-26 21:57:51,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-26 21:57:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-09-26 21:57:51,806 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-09-26 21:57:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:51,806 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-09-26 21:57:51,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-26 21:57:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-09-26 21:57:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-26 21:57:51,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:51,807 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-09-26 21:57:51,807 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:51,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:51,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-09-26 21:57:51,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:51,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:51,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:51,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:51,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:51,976 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:51,977 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:51,986 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:52,002 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-09-26 21:57:52,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:52,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:52,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:52,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-26 21:57:52,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-26 21:57:52,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-26 21:57:52,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:52,300 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-09-26 21:57:52,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:52,632 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-09-26 21:57:52,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-26 21:57:52,634 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-09-26 21:57:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:52,635 INFO L225 Difference]: With dead ends: 28 [2018-09-26 21:57:52,635 INFO L226 Difference]: Without dead ends: 26 [2018-09-26 21:57:52,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:52,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-26 21:57:52,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-26 21:57:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-26 21:57:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-09-26 21:57:52,639 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-09-26 21:57:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:52,639 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-09-26 21:57:52,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-26 21:57:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-09-26 21:57:52,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-26 21:57:52,640 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:52,640 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-09-26 21:57:52,640 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:52,640 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:52,641 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-09-26 21:57:52,641 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:52,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:52,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:52,643 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:52,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:52,820 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:52,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:52,820 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:52,828 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:52,845 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:52,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:52,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:53,003 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:53,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-26 21:57:53,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-26 21:57:53,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-26 21:57:53,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:53,004 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-09-26 21:57:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:53,635 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-26 21:57:53,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-26 21:57:53,635 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-09-26 21:57:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:53,636 INFO L225 Difference]: With dead ends: 29 [2018-09-26 21:57:53,636 INFO L226 Difference]: Without dead ends: 27 [2018-09-26 21:57:53,637 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-26 21:57:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-26 21:57:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-26 21:57:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-26 21:57:53,641 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-09-26 21:57:53,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:53,642 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-26 21:57:53,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-26 21:57:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-26 21:57:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-26 21:57:53,642 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:53,643 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-09-26 21:57:53,643 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:53,643 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:53,643 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-09-26 21:57:53,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:53,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:53,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:53,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:53,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:54,091 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:54,092 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:54,099 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:54,118 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-09-26 21:57:54,118 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:54,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:54,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:54,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-26 21:57:54,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-26 21:57:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-26 21:57:54,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:54,242 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-09-26 21:57:54,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:54,583 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-09-26 21:57:54,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-26 21:57:54,584 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-09-26 21:57:54,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:54,584 INFO L225 Difference]: With dead ends: 30 [2018-09-26 21:57:54,585 INFO L226 Difference]: Without dead ends: 28 [2018-09-26 21:57:54,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:54,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-26 21:57:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-09-26 21:57:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-26 21:57:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-09-26 21:57:54,592 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-09-26 21:57:54,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:54,592 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-09-26 21:57:54,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-26 21:57:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-09-26 21:57:54,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-26 21:57:54,595 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:54,595 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-09-26 21:57:54,595 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:54,595 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:54,595 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-09-26 21:57:54,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:54,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:54,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:54,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:54,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:54,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:54,946 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:54,953 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:57:54,978 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-26 21:57:54,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:54,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:55,276 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:55,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-26 21:57:55,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-26 21:57:55,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-26 21:57:55,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:55,277 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-09-26 21:57:55,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:55,437 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-09-26 21:57:55,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-26 21:57:55,437 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-09-26 21:57:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:55,438 INFO L225 Difference]: With dead ends: 31 [2018-09-26 21:57:55,438 INFO L226 Difference]: Without dead ends: 29 [2018-09-26 21:57:55,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-26 21:57:55,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-26 21:57:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-26 21:57:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-09-26 21:57:55,443 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-09-26 21:57:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:55,444 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-09-26 21:57:55,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-26 21:57:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-09-26 21:57:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-09-26 21:57:55,444 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:55,445 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-09-26 21:57:55,446 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:55,446 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:55,446 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-09-26 21:57:55,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:55,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:55,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:55,447 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:55,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:55,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:55,671 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:55,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:55,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:55,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:55,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-26 21:57:55,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-26 21:57:55,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-26 21:57:55,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:55,785 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-09-26 21:57:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:55,975 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-09-26 21:57:55,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-26 21:57:55,975 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-09-26 21:57:55,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:55,976 INFO L225 Difference]: With dead ends: 32 [2018-09-26 21:57:55,976 INFO L226 Difference]: Without dead ends: 30 [2018-09-26 21:57:55,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:55,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-09-26 21:57:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-09-26 21:57:55,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-26 21:57:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-09-26 21:57:55,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-09-26 21:57:55,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:55,981 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-09-26 21:57:55,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-26 21:57:55,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-09-26 21:57:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-26 21:57:55,981 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:55,981 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-09-26 21:57:55,982 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:55,982 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-09-26 21:57:55,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:55,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:55,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:55,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:57:55,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:56,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:56,295 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:56,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:57:56,320 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:57:56,321 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:56,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:56,399 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:56,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-26 21:57:56,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-26 21:57:56,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-26 21:57:56,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:56,401 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-09-26 21:57:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:56,651 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-26 21:57:56,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-26 21:57:56,652 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-09-26 21:57:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:56,652 INFO L225 Difference]: With dead ends: 33 [2018-09-26 21:57:56,653 INFO L226 Difference]: Without dead ends: 31 [2018-09-26 21:57:56,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:56,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-26 21:57:56,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-26 21:57:56,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-26 21:57:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-26 21:57:56,657 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-09-26 21:57:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:56,657 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-26 21:57:56,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-26 21:57:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-26 21:57:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-26 21:57:56,657 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:56,658 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-09-26 21:57:56,658 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:56,658 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:56,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-09-26 21:57:56,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:56,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:56,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:56,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:56,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:58,271 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:58,271 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:58,282 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:57:58,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-09-26 21:57:58,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:58,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:58,424 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:58,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:58,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-26 21:57:58,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-26 21:57:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-26 21:57:58,445 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:58,445 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-09-26 21:57:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:58,755 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-09-26 21:57:58,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-26 21:57:58,755 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-09-26 21:57:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:58,756 INFO L225 Difference]: With dead ends: 34 [2018-09-26 21:57:58,756 INFO L226 Difference]: Without dead ends: 32 [2018-09-26 21:57:58,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-26 21:57:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-26 21:57:58,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-26 21:57:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-09-26 21:57:58,761 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-09-26 21:57:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:58,761 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-09-26 21:57:58,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-26 21:57:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-09-26 21:57:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-26 21:57:58,762 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:58,762 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-09-26 21:57:58,762 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:58,763 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:58,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-09-26 21:57:58,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:58,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:58,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:58,764 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:58,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:58,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:58,943 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:58,955 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:57:58,973 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:57:58,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:58,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:59,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:59,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-26 21:57:59,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-26 21:57:59,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-26 21:57:59,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:59,061 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-09-26 21:57:59,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:57:59,260 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-09-26 21:57:59,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-26 21:57:59,261 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-09-26 21:57:59,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:57:59,262 INFO L225 Difference]: With dead ends: 35 [2018-09-26 21:57:59,262 INFO L226 Difference]: Without dead ends: 33 [2018-09-26 21:57:59,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:57:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-26 21:57:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-26 21:57:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-26 21:57:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-09-26 21:57:59,267 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-09-26 21:57:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:57:59,267 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-09-26 21:57:59,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-26 21:57:59,267 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-09-26 21:57:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-09-26 21:57:59,268 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:57:59,268 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-09-26 21:57:59,268 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:57:59,268 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:57:59,268 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-09-26 21:57:59,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:57:59,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:57:59,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:59,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:57:59,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:57:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:57:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:59,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:57:59,523 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:57:59,531 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:57:59,558 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-09-26 21:57:59,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:57:59,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:57:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:57:59,708 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:57:59,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-26 21:57:59,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-26 21:57:59,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-26 21:57:59,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:57:59,709 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-09-26 21:58:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:00,086 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-09-26 21:58:00,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-26 21:58:00,087 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-09-26 21:58:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:00,088 INFO L225 Difference]: With dead ends: 36 [2018-09-26 21:58:00,088 INFO L226 Difference]: Without dead ends: 34 [2018-09-26 21:58:00,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-26 21:58:00,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-09-26 21:58:00,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-26 21:58:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-09-26 21:58:00,092 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-09-26 21:58:00,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:00,092 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-09-26 21:58:00,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-26 21:58:00,092 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-09-26 21:58:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-09-26 21:58:00,093 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:00,093 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-09-26 21:58:00,093 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:00,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:00,093 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-09-26 21:58:00,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:00,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:00,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:00,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:00,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:00,289 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:00,289 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:00,300 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:00,375 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-09-26 21:58:00,375 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:00,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:00,500 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:00,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:00,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-26 21:58:00,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-26 21:58:00,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-26 21:58:00,521 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:00,521 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-09-26 21:58:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:00,706 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-26 21:58:00,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-26 21:58:00,706 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-09-26 21:58:00,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:00,707 INFO L225 Difference]: With dead ends: 37 [2018-09-26 21:58:00,707 INFO L226 Difference]: Without dead ends: 35 [2018-09-26 21:58:00,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-26 21:58:00,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-26 21:58:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-26 21:58:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-26 21:58:00,711 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-09-26 21:58:00,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:00,711 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-26 21:58:00,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-26 21:58:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-26 21:58:00,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-26 21:58:00,712 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:00,712 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-09-26 21:58:00,712 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:00,712 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:00,712 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-09-26 21:58:00,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:00,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:00,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:00,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:00,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:00,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:00,923 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:00,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:00,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:01,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:01,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-26 21:58:01,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-26 21:58:01,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-26 21:58:01,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:01,061 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-09-26 21:58:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:01,431 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-09-26 21:58:01,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-26 21:58:01,432 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-09-26 21:58:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:01,432 INFO L225 Difference]: With dead ends: 38 [2018-09-26 21:58:01,432 INFO L226 Difference]: Without dead ends: 36 [2018-09-26 21:58:01,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:01,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-26 21:58:01,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-09-26 21:58:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-26 21:58:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-09-26 21:58:01,436 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-09-26 21:58:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:01,437 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-09-26 21:58:01,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-26 21:58:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-09-26 21:58:01,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-26 21:58:01,437 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:01,437 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-09-26 21:58:01,438 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:01,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:01,438 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-09-26 21:58:01,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:01,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:01,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:01,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:01,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:01,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:01,731 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:01,738 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:01,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:01,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:01,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:01,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:01,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-26 21:58:01,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-26 21:58:01,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-26 21:58:01,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:01,923 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-09-26 21:58:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:02,075 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-09-26 21:58:02,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-26 21:58:02,075 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-09-26 21:58:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:02,076 INFO L225 Difference]: With dead ends: 39 [2018-09-26 21:58:02,076 INFO L226 Difference]: Without dead ends: 37 [2018-09-26 21:58:02,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-09-26 21:58:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-09-26 21:58:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-26 21:58:02,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-09-26 21:58:02,080 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-09-26 21:58:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:02,080 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-09-26 21:58:02,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-26 21:58:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-09-26 21:58:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-26 21:58:02,080 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:02,081 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-09-26 21:58:02,081 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:02,081 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-09-26 21:58:02,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:02,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:02,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:02,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:02,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:02,311 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:02,311 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:02,312 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:02,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:02,354 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-09-26 21:58:02,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:02,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:02,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:02,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-26 21:58:02,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-26 21:58:02,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-26 21:58:02,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:02,494 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-09-26 21:58:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:02,703 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-09-26 21:58:02,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-26 21:58:02,704 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-09-26 21:58:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:02,704 INFO L225 Difference]: With dead ends: 40 [2018-09-26 21:58:02,704 INFO L226 Difference]: Without dead ends: 38 [2018-09-26 21:58:02,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-26 21:58:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-09-26 21:58:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-26 21:58:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-09-26 21:58:02,708 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-09-26 21:58:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:02,708 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-09-26 21:58:02,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-26 21:58:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-09-26 21:58:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-26 21:58:02,709 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:02,709 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-09-26 21:58:02,709 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:02,710 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-09-26 21:58:02,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:02,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:02,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:02,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:02,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:03,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:03,381 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:03,388 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:03,410 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:03,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:03,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:03,603 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:03,603 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-26 21:58:03,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-26 21:58:03,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-26 21:58:03,604 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:03,604 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-09-26 21:58:03,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:03,775 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-26 21:58:03,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-26 21:58:03,776 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-09-26 21:58:03,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:03,777 INFO L225 Difference]: With dead ends: 41 [2018-09-26 21:58:03,777 INFO L226 Difference]: Without dead ends: 39 [2018-09-26 21:58:03,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:03,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-26 21:58:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-26 21:58:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 21:58:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-26 21:58:03,780 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-09-26 21:58:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:03,780 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-26 21:58:03,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-26 21:58:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-26 21:58:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-26 21:58:03,781 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:03,781 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-09-26 21:58:03,782 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:03,782 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-09-26 21:58:03,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:03,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:03,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:03,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:03,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:04,051 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:04,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:04,051 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:04,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:04,083 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-09-26 21:58:04,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:04,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:04,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:04,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-26 21:58:04,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-26 21:58:04,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-26 21:58:04,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:04,190 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-09-26 21:58:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:04,437 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-09-26 21:58:04,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-26 21:58:04,438 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-09-26 21:58:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:04,438 INFO L225 Difference]: With dead ends: 42 [2018-09-26 21:58:04,439 INFO L226 Difference]: Without dead ends: 40 [2018-09-26 21:58:04,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-26 21:58:04,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-09-26 21:58:04,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-09-26 21:58:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-09-26 21:58:04,441 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-09-26 21:58:04,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:04,442 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-09-26 21:58:04,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-26 21:58:04,442 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-09-26 21:58:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-26 21:58:04,442 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:04,442 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-09-26 21:58:04,442 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:04,442 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:04,443 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-09-26 21:58:04,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:04,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:04,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:04,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:04,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:05,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:05,196 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:05,203 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:05,229 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-26 21:58:05,230 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:05,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:06,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:06,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-26 21:58:06,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-26 21:58:06,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-26 21:58:06,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:06,266 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-09-26 21:58:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:06,602 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-09-26 21:58:06,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-26 21:58:06,602 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-09-26 21:58:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:06,603 INFO L225 Difference]: With dead ends: 43 [2018-09-26 21:58:06,603 INFO L226 Difference]: Without dead ends: 41 [2018-09-26 21:58:06,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-26 21:58:06,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-09-26 21:58:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-26 21:58:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-09-26 21:58:06,606 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-09-26 21:58:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:06,606 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-09-26 21:58:06,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-26 21:58:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-09-26 21:58:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-26 21:58:06,607 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:06,607 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-09-26 21:58:06,607 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:06,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:06,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-09-26 21:58:06,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:06,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:06,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:06,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:06,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:06,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:06,841 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:06,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:06,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:07,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:07,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-26 21:58:07,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-26 21:58:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-26 21:58:07,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:07,012 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-09-26 21:58:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:07,236 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-09-26 21:58:07,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-26 21:58:07,236 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-09-26 21:58:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:07,237 INFO L225 Difference]: With dead ends: 44 [2018-09-26 21:58:07,237 INFO L226 Difference]: Without dead ends: 42 [2018-09-26 21:58:07,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-26 21:58:07,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-09-26 21:58:07,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-26 21:58:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-09-26 21:58:07,240 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-09-26 21:58:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:07,241 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-09-26 21:58:07,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-26 21:58:07,241 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-09-26 21:58:07,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-26 21:58:07,241 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:07,242 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-09-26 21:58:07,242 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:07,242 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:07,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-09-26 21:58:07,242 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:07,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:07,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:07,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:07,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:07,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:07,474 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:07,481 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:07,504 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:07,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:07,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:07,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:07,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-26 21:58:07,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-26 21:58:07,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-26 21:58:07,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:07,633 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-09-26 21:58:07,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:07,813 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-26 21:58:07,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-26 21:58:07,813 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-09-26 21:58:07,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:07,814 INFO L225 Difference]: With dead ends: 45 [2018-09-26 21:58:07,814 INFO L226 Difference]: Without dead ends: 43 [2018-09-26 21:58:07,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-26 21:58:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-26 21:58:07,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-26 21:58:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-26 21:58:07,817 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-09-26 21:58:07,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:07,817 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-26 21:58:07,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-26 21:58:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-26 21:58:07,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-26 21:58:07,818 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:07,818 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-09-26 21:58:07,818 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:07,818 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:07,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-09-26 21:58:07,818 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:07,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:07,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:07,819 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:07,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:08,063 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:08,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:08,064 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:08,072 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:08,103 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-09-26 21:58:08,103 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:08,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:08,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:08,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-26 21:58:08,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-26 21:58:08,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-26 21:58:08,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:08,215 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-09-26 21:58:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:08,465 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-09-26 21:58:08,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-26 21:58:08,466 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-09-26 21:58:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:08,467 INFO L225 Difference]: With dead ends: 46 [2018-09-26 21:58:08,467 INFO L226 Difference]: Without dead ends: 44 [2018-09-26 21:58:08,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:08,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-26 21:58:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-26 21:58:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-26 21:58:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-09-26 21:58:08,469 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-09-26 21:58:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:08,470 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-09-26 21:58:08,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-26 21:58:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-09-26 21:58:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-26 21:58:08,471 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:08,471 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-09-26 21:58:08,471 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:08,471 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:08,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-09-26 21:58:08,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:08,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:08,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:08,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:08,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:09,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:09,266 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:09,274 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:09,300 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:09,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:09,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:09,451 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:09,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-26 21:58:09,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-26 21:58:09,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-26 21:58:09,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:09,453 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-09-26 21:58:09,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:09,657 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-09-26 21:58:09,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-26 21:58:09,657 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-09-26 21:58:09,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:09,658 INFO L225 Difference]: With dead ends: 47 [2018-09-26 21:58:09,658 INFO L226 Difference]: Without dead ends: 45 [2018-09-26 21:58:09,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:09,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-26 21:58:09,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-26 21:58:09,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-26 21:58:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-09-26 21:58:09,660 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-09-26 21:58:09,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:09,660 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-09-26 21:58:09,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-26 21:58:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-09-26 21:58:09,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-26 21:58:09,661 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:09,661 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-09-26 21:58:09,661 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:09,661 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:09,661 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-09-26 21:58:09,661 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:09,662 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:09,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:09,662 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:09,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:09,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:09,927 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:09,934 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:09,995 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-09-26 21:58:09,996 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:09,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:10,174 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:10,196 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:10,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-26 21:58:10,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-26 21:58:10,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-26 21:58:10,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:10,197 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-09-26 21:58:10,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:10,608 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-09-26 21:58:10,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-26 21:58:10,609 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-09-26 21:58:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:10,609 INFO L225 Difference]: With dead ends: 48 [2018-09-26 21:58:10,609 INFO L226 Difference]: Without dead ends: 46 [2018-09-26 21:58:10,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-26 21:58:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-26 21:58:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-26 21:58:10,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-09-26 21:58:10,611 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-09-26 21:58:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:10,611 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-09-26 21:58:10,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-26 21:58:10,612 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-09-26 21:58:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-09-26 21:58:10,612 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:10,612 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-09-26 21:58:10,612 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:10,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:10,612 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-09-26 21:58:10,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:10,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:10,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:10,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:10,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:10,931 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:10,931 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:10,939 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:10,973 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-09-26 21:58:10,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:10,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:11,104 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:11,124 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:11,124 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-26 21:58:11,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-26 21:58:11,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-26 21:58:11,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:11,125 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-09-26 21:58:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:11,387 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-26 21:58:11,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-26 21:58:11,387 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-09-26 21:58:11,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:11,388 INFO L225 Difference]: With dead ends: 49 [2018-09-26 21:58:11,388 INFO L226 Difference]: Without dead ends: 47 [2018-09-26 21:58:11,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-26 21:58:11,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-26 21:58:11,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-26 21:58:11,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-26 21:58:11,390 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-09-26 21:58:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:11,390 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-26 21:58:11,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-26 21:58:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-26 21:58:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-26 21:58:11,391 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:11,391 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-09-26 21:58:11,391 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:11,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:11,392 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-09-26 21:58:11,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:11,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:11,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:11,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:11,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:11,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:11,702 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:11,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:11,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:11,863 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:11,864 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-26 21:58:11,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-26 21:58:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-26 21:58:11,864 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:11,865 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-09-26 21:58:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:12,194 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-09-26 21:58:12,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-26 21:58:12,195 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-09-26 21:58:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:12,196 INFO L225 Difference]: With dead ends: 50 [2018-09-26 21:58:12,196 INFO L226 Difference]: Without dead ends: 48 [2018-09-26 21:58:12,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:12,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-26 21:58:12,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-26 21:58:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-26 21:58:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-09-26 21:58:12,198 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-09-26 21:58:12,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:12,198 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-09-26 21:58:12,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-26 21:58:12,199 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-09-26 21:58:12,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-09-26 21:58:12,199 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:12,199 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-09-26 21:58:12,199 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:12,200 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:12,200 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-09-26 21:58:12,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:12,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:12,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:12,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:12,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:12,501 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:12,501 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:12,513 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:12,544 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:12,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:12,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:12,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:12,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-26 21:58:12,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-26 21:58:12,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-26 21:58:12,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:12,717 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-09-26 21:58:12,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:12,988 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-09-26 21:58:12,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-26 21:58:12,989 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-09-26 21:58:12,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:12,990 INFO L225 Difference]: With dead ends: 51 [2018-09-26 21:58:12,990 INFO L226 Difference]: Without dead ends: 49 [2018-09-26 21:58:12,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:12,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-26 21:58:12,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-26 21:58:12,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-26 21:58:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-09-26 21:58:12,993 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-09-26 21:58:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:12,993 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-09-26 21:58:12,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-26 21:58:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-09-26 21:58:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-09-26 21:58:12,994 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:12,994 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-09-26 21:58:12,994 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:12,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-09-26 21:58:12,994 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:12,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:12,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:12,995 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:12,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:13,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:13,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:13,302 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:13,337 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-09-26 21:58:13,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:13,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:13,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:13,487 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:13,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-26 21:58:13,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-26 21:58:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-26 21:58:13,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:13,488 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-09-26 21:58:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:13,908 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-09-26 21:58:13,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-26 21:58:13,909 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-09-26 21:58:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:13,909 INFO L225 Difference]: With dead ends: 52 [2018-09-26 21:58:13,909 INFO L226 Difference]: Without dead ends: 50 [2018-09-26 21:58:13,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-26 21:58:13,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-09-26 21:58:13,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-26 21:58:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-09-26 21:58:13,911 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-09-26 21:58:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:13,911 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-09-26 21:58:13,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-26 21:58:13,912 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-09-26 21:58:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-09-26 21:58:13,912 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:13,912 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-09-26 21:58:13,912 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:13,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-09-26 21:58:13,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:13,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:13,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:13,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:13,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:14,309 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:14,309 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:14,316 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:14,344 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:14,345 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:14,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:14,494 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:14,494 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-26 21:58:14,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-26 21:58:14,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-26 21:58:14,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:14,495 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-09-26 21:58:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:14,780 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-26 21:58:14,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-26 21:58:14,780 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-09-26 21:58:14,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:14,781 INFO L225 Difference]: With dead ends: 53 [2018-09-26 21:58:14,781 INFO L226 Difference]: Without dead ends: 51 [2018-09-26 21:58:14,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-26 21:58:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-26 21:58:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-26 21:58:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-26 21:58:14,783 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-09-26 21:58:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:14,783 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-26 21:58:14,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-26 21:58:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-26 21:58:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-26 21:58:14,783 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:14,784 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-09-26 21:58:14,784 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:14,784 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:14,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-09-26 21:58:14,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:14,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:14,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:14,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:14,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:15,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:15,154 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:15,160 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:15,208 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-09-26 21:58:15,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:15,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:15,388 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:15,389 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-26 21:58:15,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-26 21:58:15,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-26 21:58:15,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:15,390 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-09-26 21:58:15,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:15,631 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-09-26 21:58:15,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-26 21:58:15,634 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-09-26 21:58:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:15,634 INFO L225 Difference]: With dead ends: 54 [2018-09-26 21:58:15,634 INFO L226 Difference]: Without dead ends: 52 [2018-09-26 21:58:15,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:15,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-26 21:58:15,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-26 21:58:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-26 21:58:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-09-26 21:58:15,638 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-09-26 21:58:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:15,638 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-09-26 21:58:15,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-26 21:58:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-09-26 21:58:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-09-26 21:58:15,639 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:15,639 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-09-26 21:58:15,640 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:15,640 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:15,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-09-26 21:58:15,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:15,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:15,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:15,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:15,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:16,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:16,039 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:16,046 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:16,083 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-26 21:58:16,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:16,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:16,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:16,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:16,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-26 21:58:16,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-26 21:58:16,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-26 21:58:16,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:16,246 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-09-26 21:58:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:16,450 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-09-26 21:58:16,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-26 21:58:16,450 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-09-26 21:58:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:16,451 INFO L225 Difference]: With dead ends: 55 [2018-09-26 21:58:16,451 INFO L226 Difference]: Without dead ends: 53 [2018-09-26 21:58:16,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-26 21:58:16,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-26 21:58:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-26 21:58:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-09-26 21:58:16,454 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-09-26 21:58:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:16,454 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-09-26 21:58:16,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-26 21:58:16,454 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-09-26 21:58:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-26 21:58:16,455 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:16,455 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-09-26 21:58:16,456 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:16,456 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:16,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-09-26 21:58:16,456 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:16,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:16,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:16,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:16,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:16,780 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:16,780 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:16,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:16,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:16,979 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:16,979 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-26 21:58:16,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-26 21:58:16,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-26 21:58:16,980 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:16,980 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-09-26 21:58:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:17,189 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-09-26 21:58:17,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-26 21:58:17,189 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-09-26 21:58:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:17,190 INFO L225 Difference]: With dead ends: 56 [2018-09-26 21:58:17,190 INFO L226 Difference]: Without dead ends: 54 [2018-09-26 21:58:17,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-26 21:58:17,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-09-26 21:58:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-09-26 21:58:17,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-09-26 21:58:17,192 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-09-26 21:58:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:17,192 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-09-26 21:58:17,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-26 21:58:17,192 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-09-26 21:58:17,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-26 21:58:17,192 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:17,192 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-09-26 21:58:17,193 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:17,193 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:17,193 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-09-26 21:58:17,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:17,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:17,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:17,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:17,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:17,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:17,553 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:17,562 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:17,596 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:17,597 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:17,599 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:17,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:17,758 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:17,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-26 21:58:17,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-26 21:58:17,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-26 21:58:17,760 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:17,760 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-09-26 21:58:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:18,015 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-26 21:58:18,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-26 21:58:18,015 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-09-26 21:58:18,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:18,016 INFO L225 Difference]: With dead ends: 57 [2018-09-26 21:58:18,016 INFO L226 Difference]: Without dead ends: 55 [2018-09-26 21:58:18,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-26 21:58:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-26 21:58:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-26 21:58:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-26 21:58:18,018 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-09-26 21:58:18,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:18,019 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-26 21:58:18,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-26 21:58:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-26 21:58:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-26 21:58:18,019 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:18,019 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-09-26 21:58:18,020 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:18,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:18,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-09-26 21:58:18,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:18,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:18,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:18,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:18,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:18,328 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:18,329 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:18,337 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:18,514 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-09-26 21:58:18,514 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:18,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:18,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:18,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-26 21:58:18,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-26 21:58:18,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-26 21:58:18,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:18,887 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-09-26 21:58:19,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:19,166 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-09-26 21:58:19,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-26 21:58:19,167 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-09-26 21:58:19,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:19,167 INFO L225 Difference]: With dead ends: 58 [2018-09-26 21:58:19,167 INFO L226 Difference]: Without dead ends: 56 [2018-09-26 21:58:19,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-26 21:58:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-09-26 21:58:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-26 21:58:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-09-26 21:58:19,170 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-09-26 21:58:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:19,171 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-09-26 21:58:19,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-26 21:58:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-09-26 21:58:19,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-26 21:58:19,171 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:19,172 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-09-26 21:58:19,172 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:19,172 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:19,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-09-26 21:58:19,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:19,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:19,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:20,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:20,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:20,515 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:20,549 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:20,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:20,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:20,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:20,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-26 21:58:20,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-26 21:58:20,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-26 21:58:20,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:20,734 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-09-26 21:58:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:21,068 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-09-26 21:58:21,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-26 21:58:21,068 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-09-26 21:58:21,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:21,069 INFO L225 Difference]: With dead ends: 59 [2018-09-26 21:58:21,069 INFO L226 Difference]: Without dead ends: 57 [2018-09-26 21:58:21,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:21,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-26 21:58:21,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-26 21:58:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-26 21:58:21,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-09-26 21:58:21,071 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-09-26 21:58:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:21,071 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-09-26 21:58:21,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-26 21:58:21,072 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-09-26 21:58:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-26 21:58:21,072 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:21,072 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-09-26 21:58:21,072 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:21,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:21,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-09-26 21:58:21,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:21,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:21,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:21,073 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:21,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:21,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:21,663 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:21,670 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:21,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-09-26 21:58:21,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:21,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:21,906 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:21,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-26 21:58:21,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-26 21:58:21,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-26 21:58:21,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:21,907 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-09-26 21:58:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:22,254 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-09-26 21:58:22,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-26 21:58:22,254 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-09-26 21:58:22,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:22,255 INFO L225 Difference]: With dead ends: 60 [2018-09-26 21:58:22,255 INFO L226 Difference]: Without dead ends: 58 [2018-09-26 21:58:22,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-26 21:58:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-26 21:58:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-26 21:58:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-09-26 21:58:22,257 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-09-26 21:58:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:22,258 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-09-26 21:58:22,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-26 21:58:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-09-26 21:58:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-26 21:58:22,258 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:22,258 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-09-26 21:58:22,258 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:22,259 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:22,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-09-26 21:58:22,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:22,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:22,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:22,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:22,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:22,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:22,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:22,657 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:22,699 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-09-26 21:58:22,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:22,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:22,952 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:22,952 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-26 21:58:22,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-26 21:58:22,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-26 21:58:22,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:22,953 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-09-26 21:58:23,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:23,205 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-26 21:58:23,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-26 21:58:23,205 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-09-26 21:58:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:23,206 INFO L225 Difference]: With dead ends: 61 [2018-09-26 21:58:23,206 INFO L226 Difference]: Without dead ends: 59 [2018-09-26 21:58:23,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:23,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-26 21:58:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-26 21:58:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-26 21:58:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-26 21:58:23,207 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-09-26 21:58:23,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:23,208 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-26 21:58:23,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-26 21:58:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-26 21:58:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-26 21:58:23,208 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:23,208 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-09-26 21:58:23,209 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:23,209 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:23,209 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-09-26 21:58:23,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:23,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:23,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:23,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:23,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:23,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:23,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:23,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:23,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:23,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:23,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-26 21:58:23,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-26 21:58:23,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-26 21:58:23,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:23,921 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-09-26 21:58:24,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:24,304 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-09-26 21:58:24,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-26 21:58:24,304 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-09-26 21:58:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:24,305 INFO L225 Difference]: With dead ends: 62 [2018-09-26 21:58:24,305 INFO L226 Difference]: Without dead ends: 60 [2018-09-26 21:58:24,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-26 21:58:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-26 21:58:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-26 21:58:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-09-26 21:58:24,307 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-09-26 21:58:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:24,307 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-09-26 21:58:24,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-26 21:58:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-09-26 21:58:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-26 21:58:24,308 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:24,308 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-09-26 21:58:24,308 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:24,308 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:24,309 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-09-26 21:58:24,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:24,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:24,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:24,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:24,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:24,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:24,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:24,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:24,644 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:24,675 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:24,675 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:24,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:24,837 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:24,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-26 21:58:24,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-26 21:58:24,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-26 21:58:24,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:24,838 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-09-26 21:58:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:25,095 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-09-26 21:58:25,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-26 21:58:25,095 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-09-26 21:58:25,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:25,096 INFO L225 Difference]: With dead ends: 63 [2018-09-26 21:58:25,096 INFO L226 Difference]: Without dead ends: 61 [2018-09-26 21:58:25,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-26 21:58:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-26 21:58:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-26 21:58:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-09-26 21:58:25,098 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-09-26 21:58:25,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:25,099 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-09-26 21:58:25,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-26 21:58:25,099 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-09-26 21:58:25,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-26 21:58:25,099 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:25,100 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-09-26 21:58:25,100 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:25,100 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:25,100 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-09-26 21:58:25,100 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:25,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:25,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:25,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:25,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:25,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:25,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:25,839 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:25,883 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-09-26 21:58:25,883 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:25,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:26,047 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:26,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-26 21:58:26,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-26 21:58:26,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-26 21:58:26,049 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:26,049 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-09-26 21:58:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:26,427 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-09-26 21:58:26,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-26 21:58:26,428 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-09-26 21:58:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:26,428 INFO L225 Difference]: With dead ends: 64 [2018-09-26 21:58:26,428 INFO L226 Difference]: Without dead ends: 62 [2018-09-26 21:58:26,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-26 21:58:26,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-09-26 21:58:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-09-26 21:58:26,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-09-26 21:58:26,431 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-09-26 21:58:26,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:26,431 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-09-26 21:58:26,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-26 21:58:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-09-26 21:58:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-26 21:58:26,432 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:26,432 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-09-26 21:58:26,433 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:26,433 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-09-26 21:58:26,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:26,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:26,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:26,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:26,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:26,863 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:26,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:26,871 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:26,906 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:26,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:26,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:27,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:27,095 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:27,095 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-26 21:58:27,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-26 21:58:27,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-26 21:58:27,097 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:27,097 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-09-26 21:58:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:27,472 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-26 21:58:27,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-26 21:58:27,472 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-09-26 21:58:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:27,472 INFO L225 Difference]: With dead ends: 65 [2018-09-26 21:58:27,473 INFO L226 Difference]: Without dead ends: 63 [2018-09-26 21:58:27,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-26 21:58:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-26 21:58:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-26 21:58:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-26 21:58:27,475 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-09-26 21:58:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:27,475 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-26 21:58:27,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-26 21:58:27,475 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-26 21:58:27,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-26 21:58:27,475 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:27,476 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-09-26 21:58:27,476 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:27,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:27,476 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-09-26 21:58:27,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:27,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:27,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:27,477 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:27,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:27,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:27,880 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:27,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:27,888 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:27,935 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-09-26 21:58:27,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:27,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:28,181 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:28,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-26 21:58:28,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-26 21:58:28,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-26 21:58:28,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:28,183 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-09-26 21:58:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:28,477 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-09-26 21:58:28,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-26 21:58:28,477 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-09-26 21:58:28,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:28,478 INFO L225 Difference]: With dead ends: 66 [2018-09-26 21:58:28,478 INFO L226 Difference]: Without dead ends: 64 [2018-09-26 21:58:28,478 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-26 21:58:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-26 21:58:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-26 21:58:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-09-26 21:58:28,480 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-09-26 21:58:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:28,480 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-09-26 21:58:28,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-26 21:58:28,480 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-09-26 21:58:28,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-26 21:58:28,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:28,480 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-09-26 21:58:28,481 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:28,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-09-26 21:58:28,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:28,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:28,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:28,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:28,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:28,982 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:28,982 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:28,990 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:29,038 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-26 21:58:29,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:29,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:29,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:29,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-26 21:58:29,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-26 21:58:29,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-26 21:58:29,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:29,212 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-09-26 21:58:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:29,608 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-09-26 21:58:29,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-26 21:58:29,609 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-09-26 21:58:29,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:29,609 INFO L225 Difference]: With dead ends: 67 [2018-09-26 21:58:29,609 INFO L226 Difference]: Without dead ends: 65 [2018-09-26 21:58:29,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-26 21:58:29,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-09-26 21:58:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-26 21:58:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-09-26 21:58:29,612 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-09-26 21:58:29,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:29,612 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-09-26 21:58:29,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-26 21:58:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-09-26 21:58:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-09-26 21:58:29,613 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:29,613 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-09-26 21:58:29,613 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:29,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:29,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-09-26 21:58:29,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:29,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:29,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:29,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:29,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:29,983 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:29,983 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:29,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:30,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:30,227 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:30,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-26 21:58:30,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-26 21:58:30,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-26 21:58:30,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:30,229 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-09-26 21:58:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:30,851 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-09-26 21:58:30,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-26 21:58:30,851 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-09-26 21:58:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:30,852 INFO L225 Difference]: With dead ends: 68 [2018-09-26 21:58:30,852 INFO L226 Difference]: Without dead ends: 66 [2018-09-26 21:58:30,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-26 21:58:30,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-09-26 21:58:30,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-09-26 21:58:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-09-26 21:58:30,853 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-09-26 21:58:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:30,854 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-09-26 21:58:30,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-26 21:58:30,854 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-09-26 21:58:30,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-09-26 21:58:30,854 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:30,854 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-09-26 21:58:30,854 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:30,855 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:30,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-09-26 21:58:30,855 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:30,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:30,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:30,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:30,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:31,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:31,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:31,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:31,426 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:31,426 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:31,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:31,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:31,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-26 21:58:31,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-26 21:58:31,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-26 21:58:31,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:31,616 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-09-26 21:58:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:32,091 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-26 21:58:32,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-26 21:58:32,091 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-09-26 21:58:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:32,092 INFO L225 Difference]: With dead ends: 69 [2018-09-26 21:58:32,092 INFO L226 Difference]: Without dead ends: 67 [2018-09-26 21:58:32,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-26 21:58:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-26 21:58:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-26 21:58:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-26 21:58:32,094 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-09-26 21:58:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:32,094 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-26 21:58:32,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-26 21:58:32,094 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-26 21:58:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-26 21:58:32,095 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:32,095 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-09-26 21:58:32,095 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:32,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:32,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-09-26 21:58:32,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:32,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:32,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:32,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:32,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:32,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:32,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:32,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:32,497 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:32,582 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-09-26 21:58:32,582 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:32,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:32,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:32,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-26 21:58:32,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-26 21:58:32,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-26 21:58:32,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:32,891 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-09-26 21:58:33,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:33,415 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-09-26 21:58:33,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-26 21:58:33,415 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-09-26 21:58:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:33,416 INFO L225 Difference]: With dead ends: 70 [2018-09-26 21:58:33,416 INFO L226 Difference]: Without dead ends: 68 [2018-09-26 21:58:33,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-26 21:58:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-09-26 21:58:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-09-26 21:58:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-09-26 21:58:33,419 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-09-26 21:58:33,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:33,419 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-09-26 21:58:33,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-26 21:58:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-09-26 21:58:33,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-09-26 21:58:33,420 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:33,420 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-09-26 21:58:33,420 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:33,421 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:33,421 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-09-26 21:58:33,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:33,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:33,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:33,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:33,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:34,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:34,799 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-26 21:58:34,816 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:34,874 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:34,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:34,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:35,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:35,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-26 21:58:35,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-26 21:58:35,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-26 21:58:35,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:35,073 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-09-26 21:58:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:35,371 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-09-26 21:58:35,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-26 21:58:35,371 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-09-26 21:58:35,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:35,372 INFO L225 Difference]: With dead ends: 71 [2018-09-26 21:58:35,372 INFO L226 Difference]: Without dead ends: 69 [2018-09-26 21:58:35,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:35,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-26 21:58:35,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-09-26 21:58:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-09-26 21:58:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-09-26 21:58:35,374 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-09-26 21:58:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:35,374 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-09-26 21:58:35,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-26 21:58:35,374 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-09-26 21:58:35,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-09-26 21:58:35,375 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:35,375 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-09-26 21:58:35,375 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:35,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-09-26 21:58:35,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:35,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:35,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:35,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:35,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:36,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:36,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:36,441 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:36,449 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:36,507 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-09-26 21:58:36,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:36,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:36,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:36,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:36,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-26 21:58:36,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-26 21:58:36,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-26 21:58:36,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:36,716 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-09-26 21:58:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:37,179 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-09-26 21:58:37,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-26 21:58:37,180 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-09-26 21:58:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:37,180 INFO L225 Difference]: With dead ends: 72 [2018-09-26 21:58:37,180 INFO L226 Difference]: Without dead ends: 70 [2018-09-26 21:58:37,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-09-26 21:58:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-09-26 21:58:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-09-26 21:58:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-09-26 21:58:37,183 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-09-26 21:58:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:37,183 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-09-26 21:58:37,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-26 21:58:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-09-26 21:58:37,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-26 21:58:37,184 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:37,184 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-09-26 21:58:37,184 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:37,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:37,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-09-26 21:58:37,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:37,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:37,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:37,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:37,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:37,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:37,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:37,602 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:37,656 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-09-26 21:58:37,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:37,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:39,322 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:39,322 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-26 21:58:39,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-26 21:58:39,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-26 21:58:39,323 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:39,323 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-09-26 21:58:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:39,788 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-26 21:58:39,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-26 21:58:39,788 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-09-26 21:58:39,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:39,789 INFO L225 Difference]: With dead ends: 73 [2018-09-26 21:58:39,789 INFO L226 Difference]: Without dead ends: 71 [2018-09-26 21:58:39,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-26 21:58:39,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-26 21:58:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-26 21:58:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-26 21:58:39,791 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-09-26 21:58:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:39,791 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-26 21:58:39,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-26 21:58:39,791 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-26 21:58:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-26 21:58:39,791 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:39,792 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-09-26 21:58:39,792 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:39,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:39,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-09-26 21:58:39,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:39,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:39,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:39,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:39,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:40,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:40,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:40,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:40,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:40,474 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:40,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-26 21:58:40,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-26 21:58:40,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-26 21:58:40,476 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:40,476 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-09-26 21:58:41,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:41,168 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-09-26 21:58:41,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-26 21:58:41,168 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-09-26 21:58:41,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:41,169 INFO L225 Difference]: With dead ends: 74 [2018-09-26 21:58:41,169 INFO L226 Difference]: Without dead ends: 72 [2018-09-26 21:58:41,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:41,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-09-26 21:58:41,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-09-26 21:58:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-09-26 21:58:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-09-26 21:58:41,172 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-09-26 21:58:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:41,172 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-09-26 21:58:41,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-26 21:58:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-09-26 21:58:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-26 21:58:41,173 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:41,173 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-09-26 21:58:41,173 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:41,173 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:41,173 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-09-26 21:58:41,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:41,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:41,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:41,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:41,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:41,624 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:41,624 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:41,631 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:41,671 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:41,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:41,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:41,874 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:41,874 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-26 21:58:41,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-26 21:58:41,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-26 21:58:41,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:41,875 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-09-26 21:58:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:42,335 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-09-26 21:58:42,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-26 21:58:42,335 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-09-26 21:58:42,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:42,336 INFO L225 Difference]: With dead ends: 75 [2018-09-26 21:58:42,336 INFO L226 Difference]: Without dead ends: 73 [2018-09-26 21:58:42,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-09-26 21:58:42,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-09-26 21:58:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-26 21:58:42,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-09-26 21:58:42,338 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-09-26 21:58:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:42,338 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-09-26 21:58:42,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-26 21:58:42,339 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-09-26 21:58:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-26 21:58:42,340 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:42,340 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-09-26 21:58:42,340 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:42,340 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:42,340 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-09-26 21:58:42,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:42,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:42,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:42,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:42,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:42,838 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:42,846 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:42,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-09-26 21:58:42,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:42,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:43,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:43,383 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-26 21:58:43,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-26 21:58:43,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-26 21:58:43,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:43,384 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-09-26 21:58:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:43,885 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-09-26 21:58:43,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-26 21:58:43,885 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-09-26 21:58:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:43,886 INFO L225 Difference]: With dead ends: 76 [2018-09-26 21:58:43,886 INFO L226 Difference]: Without dead ends: 74 [2018-09-26 21:58:43,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-09-26 21:58:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-09-26 21:58:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-09-26 21:58:43,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-09-26 21:58:43,889 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-09-26 21:58:43,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:43,889 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-09-26 21:58:43,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-26 21:58:43,889 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-09-26 21:58:43,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-09-26 21:58:43,890 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:43,890 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-09-26 21:58:43,890 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:43,890 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:43,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-09-26 21:58:43,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:43,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:43,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:43,891 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:43,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:44,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:44,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:44,548 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:44,589 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:44,589 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:44,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:44,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:44,804 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-26 21:58:44,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-26 21:58:44,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-26 21:58:44,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:44,805 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-09-26 21:58:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:45,384 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-26 21:58:45,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-26 21:58:45,384 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-09-26 21:58:45,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:45,385 INFO L225 Difference]: With dead ends: 77 [2018-09-26 21:58:45,385 INFO L226 Difference]: Without dead ends: 75 [2018-09-26 21:58:45,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-26 21:58:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-26 21:58:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-26 21:58:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-26 21:58:45,388 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-09-26 21:58:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:45,388 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-26 21:58:45,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-26 21:58:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-26 21:58:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-26 21:58:45,389 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:45,389 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-09-26 21:58:45,389 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:45,389 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-09-26 21:58:45,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:45,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:45,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:45,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:45,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:45,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:45,924 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:45,924 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:45,947 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:46,024 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-09-26 21:58:46,024 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:46,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:46,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:46,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-26 21:58:46,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-26 21:58:46,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-26 21:58:46,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:46,487 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-09-26 21:58:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:46,875 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-09-26 21:58:46,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-26 21:58:46,876 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-09-26 21:58:46,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:46,876 INFO L225 Difference]: With dead ends: 78 [2018-09-26 21:58:46,876 INFO L226 Difference]: Without dead ends: 76 [2018-09-26 21:58:46,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:46,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-09-26 21:58:46,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-09-26 21:58:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-09-26 21:58:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-09-26 21:58:46,879 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-09-26 21:58:46,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:46,880 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-09-26 21:58:46,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-26 21:58:46,880 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-09-26 21:58:46,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-09-26 21:58:46,880 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:46,881 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-09-26 21:58:46,881 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:46,881 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-09-26 21:58:46,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:46,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:46,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:46,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:47,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:47,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:47,439 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:47,507 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-26 21:58:47,507 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:47,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:47,753 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:47,753 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-26 21:58:47,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-26 21:58:47,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-26 21:58:47,755 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:47,755 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-09-26 21:58:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:48,115 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-09-26 21:58:48,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-26 21:58:48,115 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-09-26 21:58:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:48,115 INFO L225 Difference]: With dead ends: 79 [2018-09-26 21:58:48,116 INFO L226 Difference]: Without dead ends: 77 [2018-09-26 21:58:48,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-09-26 21:58:48,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-09-26 21:58:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-26 21:58:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-09-26 21:58:48,118 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-09-26 21:58:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:48,118 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-09-26 21:58:48,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-26 21:58:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-09-26 21:58:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-26 21:58:48,119 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:48,119 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-09-26 21:58:48,120 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:48,120 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:48,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-09-26 21:58:48,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:48,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:48,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:48,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:48,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:48,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:48,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:48,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:48,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:49,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:49,225 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-26 21:58:49,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-26 21:58:49,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-26 21:58:49,226 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:49,227 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-09-26 21:58:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:49,789 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-09-26 21:58:49,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-26 21:58:49,789 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-09-26 21:58:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:49,790 INFO L225 Difference]: With dead ends: 80 [2018-09-26 21:58:49,790 INFO L226 Difference]: Without dead ends: 78 [2018-09-26 21:58:49,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:49,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-09-26 21:58:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-09-26 21:58:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-09-26 21:58:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-09-26 21:58:49,792 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-09-26 21:58:49,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:49,792 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-09-26 21:58:49,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-26 21:58:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-09-26 21:58:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-09-26 21:58:49,793 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:49,793 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-09-26 21:58:49,793 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:49,793 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-09-26 21:58:49,793 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:49,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:49,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:49,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:49,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:50,305 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:50,305 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:50,312 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:58:50,353 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:58:50,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:50,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:50,568 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:50,568 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-26 21:58:50,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-26 21:58:50,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-26 21:58:50,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:50,569 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-09-26 21:58:51,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:51,344 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-26 21:58:51,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-26 21:58:51,344 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-09-26 21:58:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:51,345 INFO L225 Difference]: With dead ends: 81 [2018-09-26 21:58:51,345 INFO L226 Difference]: Without dead ends: 79 [2018-09-26 21:58:51,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-26 21:58:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-26 21:58:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-26 21:58:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-26 21:58:51,347 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-09-26 21:58:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:51,348 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-26 21:58:51,348 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-26 21:58:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-26 21:58:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-26 21:58:51,348 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:51,348 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-09-26 21:58:51,349 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:51,349 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-09-26 21:58:51,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:51,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:51,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:51,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:51,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:51,864 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:51,864 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:51,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:58:51,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-09-26 21:58:51,939 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:51,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:52,155 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:52,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-26 21:58:52,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-26 21:58:52,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-26 21:58:52,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:52,157 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-09-26 21:58:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:52,727 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-09-26 21:58:52,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-26 21:58:52,727 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-09-26 21:58:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:52,728 INFO L225 Difference]: With dead ends: 82 [2018-09-26 21:58:52,728 INFO L226 Difference]: Without dead ends: 80 [2018-09-26 21:58:52,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-09-26 21:58:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-09-26 21:58:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-09-26 21:58:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-09-26 21:58:52,730 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-09-26 21:58:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:52,730 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-09-26 21:58:52,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-26 21:58:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-09-26 21:58:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-09-26 21:58:52,731 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:52,731 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-09-26 21:58:52,731 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:52,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:52,731 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-09-26 21:58:52,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:52,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:52,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:52,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:52,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:53,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:53,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:53,243 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:58:53,292 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:58:53,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:53,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:53,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:53,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-26 21:58:53,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-26 21:58:53,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-26 21:58:53,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:53,524 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-09-26 21:58:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:55,749 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-09-26 21:58:55,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-26 21:58:55,750 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-09-26 21:58:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:55,750 INFO L225 Difference]: With dead ends: 83 [2018-09-26 21:58:55,750 INFO L226 Difference]: Without dead ends: 81 [2018-09-26 21:58:55,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-09-26 21:58:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-09-26 21:58:55,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-09-26 21:58:55,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-09-26 21:58:55,753 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-09-26 21:58:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:55,754 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-09-26 21:58:55,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-26 21:58:55,754 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-09-26 21:58:55,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-09-26 21:58:55,755 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:55,755 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-09-26 21:58:55,755 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:55,755 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:55,755 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-09-26 21:58:55,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:55,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:55,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:55,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:55,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:56,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:56,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:56,406 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:56,414 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:58:56,486 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-09-26 21:58:56,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:56,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:56,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:56,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-26 21:58:56,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-26 21:58:56,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-26 21:58:56,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:56,809 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-09-26 21:58:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:57,278 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-09-26 21:58:57,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-26 21:58:57,278 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-09-26 21:58:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:57,279 INFO L225 Difference]: With dead ends: 84 [2018-09-26 21:58:57,279 INFO L226 Difference]: Without dead ends: 82 [2018-09-26 21:58:57,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:57,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-26 21:58:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-09-26 21:58:57,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-09-26 21:58:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-09-26 21:58:57,281 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-09-26 21:58:57,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:57,281 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-09-26 21:58:57,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-26 21:58:57,281 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-09-26 21:58:57,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-09-26 21:58:57,282 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:57,282 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-09-26 21:58:57,282 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:57,282 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:57,282 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-09-26 21:58:57,282 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:57,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:57,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:57,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:57,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:57,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:57,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:57,831 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:57,838 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:58:57,905 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-09-26 21:58:57,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:58:57,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:58,142 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:58,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-26 21:58:58,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-26 21:58:58,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-26 21:58:58,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:58,144 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-09-26 21:58:58,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:58:58,627 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-26 21:58:58,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-26 21:58:58,628 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-09-26 21:58:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:58:58,628 INFO L225 Difference]: With dead ends: 85 [2018-09-26 21:58:58,628 INFO L226 Difference]: Without dead ends: 83 [2018-09-26 21:58:58,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:58:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-26 21:58:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-26 21:58:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-26 21:58:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-26 21:58:58,631 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-09-26 21:58:58,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:58:58,631 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-26 21:58:58,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-26 21:58:58,631 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-26 21:58:58,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-26 21:58:58,632 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:58:58,632 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-09-26 21:58:58,632 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:58:58,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:58:58,632 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-09-26 21:58:58,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:58:58,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:58:58,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:58,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:58:58,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:58:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:59,183 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:58:59,183 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:58:59,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:58:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:58:59,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:58:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:58:59,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:58:59,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-26 21:58:59,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-26 21:58:59,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-26 21:58:59,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:58:59,505 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-09-26 21:59:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:00,126 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-09-26 21:59:00,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-26 21:59:00,126 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-09-26 21:59:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:00,126 INFO L225 Difference]: With dead ends: 86 [2018-09-26 21:59:00,126 INFO L226 Difference]: Without dead ends: 84 [2018-09-26 21:59:00,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-09-26 21:59:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-09-26 21:59:00,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-09-26 21:59:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-09-26 21:59:00,128 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-09-26 21:59:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:00,129 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-09-26 21:59:00,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-26 21:59:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-09-26 21:59:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-09-26 21:59:00,129 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:00,129 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-09-26 21:59:00,129 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:00,129 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:00,130 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-09-26 21:59:00,130 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:00,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:00,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:00,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:00,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:00,699 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:00,699 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:00,708 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:00,754 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:00,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:00,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:01,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:01,805 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:01,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-26 21:59:01,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-26 21:59:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-26 21:59:01,806 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:01,806 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-09-26 21:59:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:02,238 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-09-26 21:59:02,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-26 21:59:02,239 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-09-26 21:59:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:02,239 INFO L225 Difference]: With dead ends: 87 [2018-09-26 21:59:02,239 INFO L226 Difference]: Without dead ends: 85 [2018-09-26 21:59:02,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-26 21:59:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-26 21:59:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-26 21:59:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-09-26 21:59:02,242 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-09-26 21:59:02,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:02,242 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-09-26 21:59:02,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-26 21:59:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-09-26 21:59:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-26 21:59:02,243 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:02,243 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-09-26 21:59:02,243 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:02,243 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-09-26 21:59:02,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:02,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:02,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:02,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:02,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:03,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:03,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:03,277 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:03,349 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-09-26 21:59:03,350 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:03,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:03,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:03,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-26 21:59:03,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-26 21:59:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-26 21:59:03,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:03,612 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-09-26 21:59:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:04,222 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-09-26 21:59:04,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-26 21:59:04,222 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-09-26 21:59:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:04,223 INFO L225 Difference]: With dead ends: 88 [2018-09-26 21:59:04,223 INFO L226 Difference]: Without dead ends: 86 [2018-09-26 21:59:04,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:04,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-09-26 21:59:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-09-26 21:59:04,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-26 21:59:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-09-26 21:59:04,225 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-09-26 21:59:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:04,225 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-09-26 21:59:04,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-26 21:59:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-09-26 21:59:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-09-26 21:59:04,226 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:04,226 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-09-26 21:59:04,226 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:04,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-09-26 21:59:04,227 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:04,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:04,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:04,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:04,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:04,788 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:04,788 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:04,796 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:04,846 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:04,846 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:04,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:05,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:05,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-26 21:59:05,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-26 21:59:05,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-26 21:59:05,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:05,243 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-09-26 21:59:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:05,698 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-26 21:59:05,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-26 21:59:05,699 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-09-26 21:59:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:05,699 INFO L225 Difference]: With dead ends: 89 [2018-09-26 21:59:05,699 INFO L226 Difference]: Without dead ends: 87 [2018-09-26 21:59:05,700 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:05,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-26 21:59:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-26 21:59:05,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-26 21:59:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-26 21:59:05,701 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-09-26 21:59:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:05,702 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-26 21:59:05,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-26 21:59:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-26 21:59:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-26 21:59:05,702 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:05,702 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-09-26 21:59:05,703 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:05,703 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:05,703 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-09-26 21:59:05,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:05,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:05,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:05,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:05,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:06,517 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:06,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:06,525 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:06,601 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-09-26 21:59:06,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:06,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:06,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:06,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-26 21:59:06,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-26 21:59:06,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-26 21:59:06,884 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:06,884 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-09-26 21:59:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:07,565 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-09-26 21:59:07,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-26 21:59:07,565 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-09-26 21:59:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:07,566 INFO L225 Difference]: With dead ends: 90 [2018-09-26 21:59:07,566 INFO L226 Difference]: Without dead ends: 88 [2018-09-26 21:59:07,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:07,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-26 21:59:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-09-26 21:59:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-26 21:59:07,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-09-26 21:59:07,569 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-09-26 21:59:07,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:07,569 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-09-26 21:59:07,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-26 21:59:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-09-26 21:59:07,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-09-26 21:59:07,570 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:07,570 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-09-26 21:59:07,570 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:07,570 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:07,571 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-09-26 21:59:07,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:07,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:07,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:07,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:07,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:08,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:08,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-09-26 21:59:08,183 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:08,265 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-26 21:59:08,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:08,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:08,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:08,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:08,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-26 21:59:08,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-26 21:59:08,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-26 21:59:08,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:08,518 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-09-26 21:59:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:09,131 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-09-26 21:59:09,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-26 21:59:09,132 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-09-26 21:59:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:09,132 INFO L225 Difference]: With dead ends: 91 [2018-09-26 21:59:09,132 INFO L226 Difference]: Without dead ends: 89 [2018-09-26 21:59:09,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:09,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-09-26 21:59:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-09-26 21:59:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-09-26 21:59:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-09-26 21:59:09,135 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-09-26 21:59:09,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:09,135 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-09-26 21:59:09,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-26 21:59:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-09-26 21:59:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-09-26 21:59:09,136 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:09,136 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-09-26 21:59:09,136 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:09,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:09,137 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-09-26 21:59:09,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:09,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:09,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:09,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:09,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:09,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:09,831 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:09,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:09,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:10,136 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:10,137 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-26 21:59:10,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-26 21:59:10,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-26 21:59:10,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:10,139 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-09-26 21:59:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:10,633 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-09-26 21:59:10,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-26 21:59:10,633 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-09-26 21:59:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:10,634 INFO L225 Difference]: With dead ends: 92 [2018-09-26 21:59:10,634 INFO L226 Difference]: Without dead ends: 90 [2018-09-26 21:59:10,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-09-26 21:59:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-09-26 21:59:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-09-26 21:59:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-09-26 21:59:10,636 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-09-26 21:59:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:10,636 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-09-26 21:59:10,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-26 21:59:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-09-26 21:59:10,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-09-26 21:59:10,637 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:10,637 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-09-26 21:59:10,637 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:10,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:10,638 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-09-26 21:59:10,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:10,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:10,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:10,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:10,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:11,262 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:11,262 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:11,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:11,320 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:11,321 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:11,323 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:11,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:11,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-26 21:59:11,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-26 21:59:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-26 21:59:11,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:11,687 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-09-26 21:59:12,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:12,233 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-26 21:59:12,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-26 21:59:12,233 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-09-26 21:59:12,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:12,234 INFO L225 Difference]: With dead ends: 93 [2018-09-26 21:59:12,234 INFO L226 Difference]: Without dead ends: 91 [2018-09-26 21:59:12,234 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-26 21:59:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-26 21:59:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-26 21:59:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-26 21:59:12,236 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-09-26 21:59:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:12,236 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-26 21:59:12,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-26 21:59:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-26 21:59:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-26 21:59:12,237 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:12,237 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-09-26 21:59:12,237 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:12,237 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:12,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-09-26 21:59:12,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:12,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:12,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:12,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:12,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:12,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:12,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:12,888 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:12,970 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-09-26 21:59:12,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:12,974 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:13,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:13,241 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-26 21:59:13,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-26 21:59:13,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-26 21:59:13,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:13,243 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-09-26 21:59:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:13,740 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-09-26 21:59:13,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-26 21:59:13,740 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-09-26 21:59:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:13,741 INFO L225 Difference]: With dead ends: 94 [2018-09-26 21:59:13,741 INFO L226 Difference]: Without dead ends: 92 [2018-09-26 21:59:13,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:13,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-09-26 21:59:13,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-09-26 21:59:13,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-09-26 21:59:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-09-26 21:59:13,743 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-09-26 21:59:13,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:13,743 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-09-26 21:59:13,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-26 21:59:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-09-26 21:59:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-09-26 21:59:13,744 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:13,744 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-09-26 21:59:13,744 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:13,744 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:13,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-09-26 21:59:13,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:13,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:13,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:13,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:13,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:14,388 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:14,388 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:14,395 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:14,450 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:14,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:14,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:14,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:14,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-26 21:59:14,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-26 21:59:14,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-26 21:59:14,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:14,722 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-09-26 21:59:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:15,253 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-09-26 21:59:15,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-26 21:59:15,253 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-09-26 21:59:15,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:15,254 INFO L225 Difference]: With dead ends: 95 [2018-09-26 21:59:15,254 INFO L226 Difference]: Without dead ends: 93 [2018-09-26 21:59:15,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-26 21:59:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-26 21:59:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-26 21:59:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-09-26 21:59:15,257 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-09-26 21:59:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:15,257 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-09-26 21:59:15,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-26 21:59:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-09-26 21:59:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-26 21:59:15,258 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:15,258 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-09-26 21:59:15,258 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:15,258 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-09-26 21:59:15,259 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:15,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:15,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:15,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:15,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:15,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:15,996 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:16,003 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:16,151 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-09-26 21:59:16,152 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:16,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:16,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:16,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-26 21:59:16,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-26 21:59:16,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-26 21:59:16,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:16,443 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-09-26 21:59:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:17,128 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-09-26 21:59:17,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-26 21:59:17,129 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-09-26 21:59:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:17,129 INFO L225 Difference]: With dead ends: 96 [2018-09-26 21:59:17,129 INFO L226 Difference]: Without dead ends: 94 [2018-09-26 21:59:17,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-09-26 21:59:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-09-26 21:59:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-09-26 21:59:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-09-26 21:59:17,132 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-09-26 21:59:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:17,132 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-09-26 21:59:17,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-26 21:59:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-09-26 21:59:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-09-26 21:59:17,132 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:17,132 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-09-26 21:59:17,133 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:17,133 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-09-26 21:59:17,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:17,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:17,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:17,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:17,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:17,790 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:17,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:17,797 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:59:17,878 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-09-26 21:59:17,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:17,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:18,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:18,161 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:18,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-26 21:59:18,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-26 21:59:18,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-26 21:59:18,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:18,163 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-09-26 21:59:18,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:18,743 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-26 21:59:18,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-26 21:59:18,743 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-09-26 21:59:18,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:18,744 INFO L225 Difference]: With dead ends: 97 [2018-09-26 21:59:18,744 INFO L226 Difference]: Without dead ends: 95 [2018-09-26 21:59:18,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:18,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-26 21:59:18,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-26 21:59:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-26 21:59:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-26 21:59:18,746 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-09-26 21:59:18,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:18,746 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-26 21:59:18,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-26 21:59:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-26 21:59:18,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-26 21:59:18,746 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:18,747 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-09-26 21:59:18,747 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:18,747 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:18,747 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-09-26 21:59:18,747 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:18,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:18,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:18,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:18,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:19,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:19,420 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:19,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:19,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:19,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:19,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:19,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-26 21:59:19,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-26 21:59:19,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-26 21:59:19,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:19,764 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-09-26 21:59:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:20,541 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-09-26 21:59:20,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-26 21:59:20,542 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-09-26 21:59:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:20,542 INFO L225 Difference]: With dead ends: 98 [2018-09-26 21:59:20,542 INFO L226 Difference]: Without dead ends: 96 [2018-09-26 21:59:20,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-09-26 21:59:20,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-09-26 21:59:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-09-26 21:59:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-09-26 21:59:20,544 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-09-26 21:59:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:20,545 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-09-26 21:59:20,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-26 21:59:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-09-26 21:59:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-09-26 21:59:20,545 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:20,545 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-09-26 21:59:20,545 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:20,546 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:20,546 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-09-26 21:59:20,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:20,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:20,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:20,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:20,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:21,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:21,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:21,289 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:21,342 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:21,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:21,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:21,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:21,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-26 21:59:21,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-26 21:59:21,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-26 21:59:21,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:21,653 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-09-26 21:59:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:22,597 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-09-26 21:59:22,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-26 21:59:22,597 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-09-26 21:59:22,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:22,598 INFO L225 Difference]: With dead ends: 99 [2018-09-26 21:59:22,598 INFO L226 Difference]: Without dead ends: 97 [2018-09-26 21:59:22,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:22,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-26 21:59:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-09-26 21:59:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-09-26 21:59:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-09-26 21:59:22,600 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-09-26 21:59:22,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:22,600 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-09-26 21:59:22,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-26 21:59:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-09-26 21:59:22,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-09-26 21:59:22,601 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:22,601 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-09-26 21:59:22,601 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:22,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:22,602 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-09-26 21:59:22,602 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:22,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:22,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:22,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:22,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:23,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:23,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:23,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:23,546 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-09-26 21:59:23,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:23,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:23,827 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:23,827 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-26 21:59:23,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-26 21:59:23,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-26 21:59:23,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:23,829 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-09-26 21:59:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:24,476 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-09-26 21:59:24,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-26 21:59:24,477 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-09-26 21:59:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:24,477 INFO L225 Difference]: With dead ends: 100 [2018-09-26 21:59:24,477 INFO L226 Difference]: Without dead ends: 98 [2018-09-26 21:59:24,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-09-26 21:59:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-09-26 21:59:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-09-26 21:59:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-09-26 21:59:24,479 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-09-26 21:59:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:24,480 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-09-26 21:59:24,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-26 21:59:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-09-26 21:59:24,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-09-26 21:59:24,480 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:24,480 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-09-26 21:59:24,480 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:24,480 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:24,481 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-09-26 21:59:24,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:24,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:24,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:24,481 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:24,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:25,221 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:25,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:25,228 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:25,288 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:25,288 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:25,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:25,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:25,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:25,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-26 21:59:25,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-26 21:59:25,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-26 21:59:25,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:25,632 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-09-26 21:59:26,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:26,527 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-26 21:59:26,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-26 21:59:26,527 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-09-26 21:59:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:26,528 INFO L225 Difference]: With dead ends: 101 [2018-09-26 21:59:26,528 INFO L226 Difference]: Without dead ends: 99 [2018-09-26 21:59:26,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-26 21:59:26,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-26 21:59:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-26 21:59:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-26 21:59:26,530 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-09-26 21:59:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:26,530 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-26 21:59:26,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-26 21:59:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-26 21:59:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-26 21:59:26,531 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:26,531 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-09-26 21:59:26,531 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:26,531 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:26,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-09-26 21:59:26,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:26,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:26,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:26,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:26,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:27,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:27,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:27,430 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:27,519 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-09-26 21:59:27,519 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:27,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:27,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:27,831 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:27,831 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-26 21:59:27,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-26 21:59:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-26 21:59:27,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:27,834 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-09-26 21:59:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:28,506 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-09-26 21:59:28,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-26 21:59:28,507 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-09-26 21:59:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:28,507 INFO L225 Difference]: With dead ends: 102 [2018-09-26 21:59:28,507 INFO L226 Difference]: Without dead ends: 100 [2018-09-26 21:59:28,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-09-26 21:59:28,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-09-26 21:59:28,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-09-26 21:59:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-09-26 21:59:28,510 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-09-26 21:59:28,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:28,510 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-09-26 21:59:28,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-26 21:59:28,510 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-09-26 21:59:28,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-09-26 21:59:28,511 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:28,511 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-09-26 21:59:28,511 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:28,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:28,511 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-09-26 21:59:28,511 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:28,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:28,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:28,512 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:28,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:28,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:29,292 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:29,292 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:29,305 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:59:29,396 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-26 21:59:29,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:29,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:29,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:29,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-26 21:59:29,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-26 21:59:29,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-26 21:59:29,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:29,699 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-09-26 21:59:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:30,361 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-09-26 21:59:30,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-26 21:59:30,361 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-09-26 21:59:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:30,362 INFO L225 Difference]: With dead ends: 103 [2018-09-26 21:59:30,362 INFO L226 Difference]: Without dead ends: 101 [2018-09-26 21:59:30,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-26 21:59:30,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-26 21:59:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-26 21:59:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-09-26 21:59:30,365 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-09-26 21:59:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:30,365 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-09-26 21:59:30,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-26 21:59:30,365 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-09-26 21:59:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-26 21:59:30,366 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:30,366 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-09-26 21:59:30,366 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:30,366 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-09-26 21:59:30,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:30,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:30,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:30,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:30,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:31,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:31,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:31,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:31,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:31,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:31,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-26 21:59:31,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-26 21:59:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-26 21:59:31,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:31,509 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-09-26 21:59:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:32,437 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-09-26 21:59:32,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-26 21:59:32,438 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-09-26 21:59:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:32,438 INFO L225 Difference]: With dead ends: 104 [2018-09-26 21:59:32,438 INFO L226 Difference]: Without dead ends: 102 [2018-09-26 21:59:32,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-09-26 21:59:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-09-26 21:59:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-09-26 21:59:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-09-26 21:59:32,441 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-09-26 21:59:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:32,441 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-09-26 21:59:32,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-26 21:59:32,441 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-09-26 21:59:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-09-26 21:59:32,441 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:32,442 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-09-26 21:59:32,442 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:32,442 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-09-26 21:59:32,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:32,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:32,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:32,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:32,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:33,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:33,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:33,223 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:33,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:33,285 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:33,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:33,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:33,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:33,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-26 21:59:33,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-26 21:59:33,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-26 21:59:33,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:33,633 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-09-26 21:59:34,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:34,516 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-26 21:59:34,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-26 21:59:34,517 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-09-26 21:59:34,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:34,517 INFO L225 Difference]: With dead ends: 105 [2018-09-26 21:59:34,517 INFO L226 Difference]: Without dead ends: 103 [2018-09-26 21:59:34,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:34,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-26 21:59:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-26 21:59:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-26 21:59:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-26 21:59:34,520 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-09-26 21:59:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:34,520 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-26 21:59:34,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-26 21:59:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-26 21:59:34,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-26 21:59:34,521 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:34,521 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-09-26 21:59:34,521 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:34,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-09-26 21:59:34,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:34,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:34,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:34,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:34,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:35,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:35,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:35,304 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:35,402 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-09-26 21:59:35,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:35,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:35,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:35,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-26 21:59:35,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-26 21:59:35,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-26 21:59:35,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:35,722 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-09-26 21:59:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:36,576 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-09-26 21:59:36,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-26 21:59:36,576 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-09-26 21:59:36,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:36,577 INFO L225 Difference]: With dead ends: 106 [2018-09-26 21:59:36,577 INFO L226 Difference]: Without dead ends: 104 [2018-09-26 21:59:36,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-09-26 21:59:36,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-09-26 21:59:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-09-26 21:59:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-09-26 21:59:36,579 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-09-26 21:59:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:36,580 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-09-26 21:59:36,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-26 21:59:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-09-26 21:59:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-09-26 21:59:36,580 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:36,580 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-09-26 21:59:36,581 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:36,581 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:36,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-09-26 21:59:36,581 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:36,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:36,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:36,582 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:36,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:37,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:37,531 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:37,539 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:37,606 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:37,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:37,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:37,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:37,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-26 21:59:37,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-26 21:59:37,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-26 21:59:37,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:37,923 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-09-26 21:59:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:38,795 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-09-26 21:59:38,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-26 21:59:38,796 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-09-26 21:59:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:38,796 INFO L225 Difference]: With dead ends: 107 [2018-09-26 21:59:38,796 INFO L226 Difference]: Without dead ends: 105 [2018-09-26 21:59:38,797 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:38,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-09-26 21:59:38,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-09-26 21:59:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-09-26 21:59:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-09-26 21:59:38,806 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-09-26 21:59:38,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:38,806 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-09-26 21:59:38,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-26 21:59:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-09-26 21:59:38,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-09-26 21:59:38,807 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:38,807 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-09-26 21:59:38,808 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:38,808 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-09-26 21:59:38,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:38,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:38,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:38,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:38,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:39,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:39,645 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:39,661 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:39,769 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-09-26 21:59:39,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:39,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:40,081 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:40,081 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-26 21:59:40,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-26 21:59:40,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-26 21:59:40,083 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:40,083 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-09-26 21:59:40,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:40,945 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-09-26 21:59:40,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-26 21:59:40,945 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-09-26 21:59:40,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:40,946 INFO L225 Difference]: With dead ends: 108 [2018-09-26 21:59:40,946 INFO L226 Difference]: Without dead ends: 106 [2018-09-26 21:59:40,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-26 21:59:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-09-26 21:59:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-09-26 21:59:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-09-26 21:59:40,949 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-09-26 21:59:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:40,949 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-09-26 21:59:40,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-26 21:59:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-09-26 21:59:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-09-26 21:59:40,950 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:40,950 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-09-26 21:59:40,950 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:40,951 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:40,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-09-26 21:59:40,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:40,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:40,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:40,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:41,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:41,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:41,820 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:59:41,916 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-09-26 21:59:41,916 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:41,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:42,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:42,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-26 21:59:42,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-26 21:59:42,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-26 21:59:42,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:42,298 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-09-26 21:59:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:43,316 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-26 21:59:43,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-26 21:59:43,317 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-09-26 21:59:43,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:43,317 INFO L225 Difference]: With dead ends: 109 [2018-09-26 21:59:43,317 INFO L226 Difference]: Without dead ends: 107 [2018-09-26 21:59:43,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:43,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-26 21:59:43,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-26 21:59:43,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-26 21:59:43,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-26 21:59:43,321 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-09-26 21:59:43,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:43,321 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-26 21:59:43,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-26 21:59:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-26 21:59:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-26 21:59:43,322 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:43,322 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-09-26 21:59:43,322 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:43,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:43,323 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-09-26 21:59:43,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:43,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:43,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:43,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:43,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:44,175 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:44,175 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:44,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:44,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:44,637 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:44,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-26 21:59:44,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-26 21:59:44,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-26 21:59:44,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:44,639 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-09-26 21:59:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:45,714 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-09-26 21:59:45,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-26 21:59:45,715 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-09-26 21:59:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:45,715 INFO L225 Difference]: With dead ends: 110 [2018-09-26 21:59:45,715 INFO L226 Difference]: Without dead ends: 108 [2018-09-26 21:59:45,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:45,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-26 21:59:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-09-26 21:59:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-09-26 21:59:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-09-26 21:59:45,718 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-09-26 21:59:45,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:45,718 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-09-26 21:59:45,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-26 21:59:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-09-26 21:59:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-09-26 21:59:45,718 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:45,718 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-09-26 21:59:45,719 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:45,719 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:45,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-09-26 21:59:45,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:45,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:45,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:45,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:45,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:46,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:46,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:46,779 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 21:59:46,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 21:59:46,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:46,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:47,243 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:47,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-26 21:59:47,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-26 21:59:47,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-26 21:59:47,246 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:47,246 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-09-26 21:59:48,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:48,194 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-09-26 21:59:48,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-26 21:59:48,195 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-09-26 21:59:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:48,195 INFO L225 Difference]: With dead ends: 111 [2018-09-26 21:59:48,195 INFO L226 Difference]: Without dead ends: 109 [2018-09-26 21:59:48,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-09-26 21:59:48,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-09-26 21:59:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-09-26 21:59:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-09-26 21:59:48,197 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-09-26 21:59:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:48,197 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-09-26 21:59:48,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-26 21:59:48,198 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-09-26 21:59:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-09-26 21:59:48,198 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:48,198 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-09-26 21:59:48,198 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:48,198 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:48,198 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-09-26 21:59:48,199 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:48,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:48,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:48,199 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:48,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:49,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:49,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:49,139 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 21:59:49,246 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-09-26 21:59:49,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:49,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:49,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:49,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-26 21:59:49,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-26 21:59:49,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-26 21:59:49,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:49,581 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-09-26 21:59:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:50,336 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-09-26 21:59:50,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-26 21:59:50,336 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-09-26 21:59:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:50,337 INFO L225 Difference]: With dead ends: 112 [2018-09-26 21:59:50,337 INFO L226 Difference]: Without dead ends: 110 [2018-09-26 21:59:50,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:50,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-09-26 21:59:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-09-26 21:59:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-09-26 21:59:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-09-26 21:59:50,339 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-09-26 21:59:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:50,339 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-09-26 21:59:50,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-26 21:59:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-09-26 21:59:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-09-26 21:59:50,340 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:50,340 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-09-26 21:59:50,340 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:50,340 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-09-26 21:59:50,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:50,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:50,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:50,341 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:50,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:51,230 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:51,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:51,238 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 21:59:51,305 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 21:59:51,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:51,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:51,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:51,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-26 21:59:51,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-26 21:59:51,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-26 21:59:51,643 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:51,643 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-09-26 21:59:52,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:52,816 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-26 21:59:52,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-26 21:59:52,816 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-09-26 21:59:52,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:52,817 INFO L225 Difference]: With dead ends: 113 [2018-09-26 21:59:52,817 INFO L226 Difference]: Without dead ends: 111 [2018-09-26 21:59:52,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-26 21:59:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-26 21:59:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-26 21:59:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-26 21:59:52,819 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-09-26 21:59:52,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:52,820 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-26 21:59:52,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-26 21:59:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-26 21:59:52,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-26 21:59:52,820 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:52,820 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-09-26 21:59:52,821 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:52,821 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:52,821 INFO L82 PathProgramCache]: Analyzing trace with hash 179553222, now seen corresponding path program 107 times [2018-09-26 21:59:52,821 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:52,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:52,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:52,822 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:52,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:53,726 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:53,726 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:53,741 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 21:59:53,851 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-09-26 21:59:53,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:53,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:54,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:54,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-26 21:59:54,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-26 21:59:54,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-26 21:59:54,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:54,190 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-09-26 21:59:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:55,149 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-09-26 21:59:55,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-26 21:59:55,149 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-09-26 21:59:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:55,150 INFO L225 Difference]: With dead ends: 114 [2018-09-26 21:59:55,150 INFO L226 Difference]: Without dead ends: 112 [2018-09-26 21:59:55,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-09-26 21:59:55,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-09-26 21:59:55,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-09-26 21:59:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-09-26 21:59:55,152 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-09-26 21:59:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:55,152 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-09-26 21:59:55,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-26 21:59:55,153 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-09-26 21:59:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-09-26 21:59:55,153 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:55,153 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-09-26 21:59:55,153 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:55,153 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1271178720, now seen corresponding path program 108 times [2018-09-26 21:59:55,154 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:55,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:55,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:55,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:55,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:56,145 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:56,145 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:56,152 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 21:59:56,255 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-26 21:59:56,255 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 21:59:56,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:56,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:56,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-26 21:59:56,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-26 21:59:56,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-26 21:59:56,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:56,597 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-09-26 21:59:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:59:57,868 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-09-26 21:59:57,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-26 21:59:57,868 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-09-26 21:59:57,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:59:57,869 INFO L225 Difference]: With dead ends: 115 [2018-09-26 21:59:57,869 INFO L226 Difference]: Without dead ends: 113 [2018-09-26 21:59:57,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:59:57,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-09-26 21:59:57,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-09-26 21:59:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-09-26 21:59:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-09-26 21:59:57,871 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-09-26 21:59:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:59:57,872 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-09-26 21:59:57,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-26 21:59:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-09-26 21:59:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-09-26 21:59:57,872 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:59:57,873 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-09-26 21:59:57,873 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:59:57,873 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:59:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 751830790, now seen corresponding path program 109 times [2018-09-26 21:59:57,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:59:57,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:59:57,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:57,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 21:59:57,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:59:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:58,816 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:59:58,816 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 21:59:58,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:59:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:59:58,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:59:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:59:59,250 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 21:59:59,251 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-26 21:59:59,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-26 21:59:59,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-26 21:59:59,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:59:59,253 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-09-26 22:00:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:00,213 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-09-26 22:00:00,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-26 22:00:00,213 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-09-26 22:00:00,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:00,213 INFO L225 Difference]: With dead ends: 116 [2018-09-26 22:00:00,214 INFO L226 Difference]: Without dead ends: 114 [2018-09-26 22:00:00,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-09-26 22:00:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-09-26 22:00:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-09-26 22:00:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-09-26 22:00:00,216 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-09-26 22:00:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:00,217 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-09-26 22:00:00,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-26 22:00:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-09-26 22:00:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-09-26 22:00:00,217 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:00,217 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-09-26 22:00:00,218 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:00,218 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:00,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1831914144, now seen corresponding path program 110 times [2018-09-26 22:00:00,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:00,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:00,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:00,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:00,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:01,179 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:01,179 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:01,186 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 22:00:01,247 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 22:00:01,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:01,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:01,596 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:01,596 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-26 22:00:01,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-26 22:00:01,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-26 22:00:01,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:01,599 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 113 states. [2018-09-26 22:00:02,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:02,743 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-26 22:00:02,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-26 22:00:02,744 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 113 [2018-09-26 22:00:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:02,744 INFO L225 Difference]: With dead ends: 117 [2018-09-26 22:00:02,744 INFO L226 Difference]: Without dead ends: 115 [2018-09-26 22:00:02,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:02,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-26 22:00:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-26 22:00:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-26 22:00:02,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-26 22:00:02,747 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 113 [2018-09-26 22:00:02,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:02,747 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-26 22:00:02,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-26 22:00:02,748 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-26 22:00:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-26 22:00:02,748 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:02,748 INFO L375 BasicCegarLoop]: trace histogram [111, 1, 1, 1] [2018-09-26 22:00:02,749 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:02,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:02,749 INFO L82 PathProgramCache]: Analyzing trace with hash 954759750, now seen corresponding path program 111 times [2018-09-26 22:00:02,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:02,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:02,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:02,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:02,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:03,783 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:03,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:03,790 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 22:00:03,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2018-09-26 22:00:03,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:03,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:04,275 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:04,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-26 22:00:04,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-26 22:00:04,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-26 22:00:04,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:04,278 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 114 states. [2018-09-26 22:00:05,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:05,161 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-09-26 22:00:05,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-26 22:00:05,162 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114 [2018-09-26 22:00:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:05,162 INFO L225 Difference]: With dead ends: 118 [2018-09-26 22:00:05,162 INFO L226 Difference]: Without dead ends: 116 [2018-09-26 22:00:05,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:05,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-09-26 22:00:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2018-09-26 22:00:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2018-09-26 22:00:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions. [2018-09-26 22:00:05,165 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 114 [2018-09-26 22:00:05,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:05,165 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions. [2018-09-26 22:00:05,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-26 22:00:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions. [2018-09-26 22:00:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-09-26 22:00:05,166 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:05,166 INFO L375 BasicCegarLoop]: trace histogram [112, 1, 1, 1] [2018-09-26 22:00:05,166 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:05,166 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash -467222688, now seen corresponding path program 112 times [2018-09-26 22:00:05,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:05,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:05,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:05,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:05,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:06,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:06,166 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:06,166 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:06,173 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:00:06,242 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:00:06,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:06,246 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 0 proven. 6328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:06,693 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:06,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-26 22:00:06,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-26 22:00:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-26 22:00:06,695 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:06,695 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 115 states. [2018-09-26 22:00:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:08,107 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-09-26 22:00:08,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-26 22:00:08,107 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 115 [2018-09-26 22:00:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:08,108 INFO L225 Difference]: With dead ends: 119 [2018-09-26 22:00:08,108 INFO L226 Difference]: Without dead ends: 117 [2018-09-26 22:00:08,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-09-26 22:00:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-09-26 22:00:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-09-26 22:00:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-09-26 22:00:08,110 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 115 [2018-09-26 22:00:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:08,110 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-09-26 22:00:08,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-26 22:00:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-09-26 22:00:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-26 22:00:08,110 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:08,111 INFO L375 BasicCegarLoop]: trace histogram [113, 1, 1, 1] [2018-09-26 22:00:08,111 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:08,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:08,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1599005306, now seen corresponding path program 113 times [2018-09-26 22:00:08,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:08,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:08,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:08,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:08,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:09,058 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:09,058 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:09,066 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:00:09,183 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2018-09-26 22:00:09,184 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:09,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:09,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:09,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-26 22:00:09,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-26 22:00:09,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-26 22:00:09,699 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:09,699 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 116 states. [2018-09-26 22:00:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:10,629 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2018-09-26 22:00:10,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-26 22:00:10,629 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 116 [2018-09-26 22:00:10,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:10,629 INFO L225 Difference]: With dead ends: 120 [2018-09-26 22:00:10,630 INFO L226 Difference]: Without dead ends: 118 [2018-09-26 22:00:10,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-09-26 22:00:10,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-09-26 22:00:10,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-09-26 22:00:10,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions. [2018-09-26 22:00:10,632 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 116 [2018-09-26 22:00:10,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:10,632 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions. [2018-09-26 22:00:10,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-26 22:00:10,632 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions. [2018-09-26 22:00:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-09-26 22:00:10,632 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:10,632 INFO L375 BasicCegarLoop]: trace histogram [114, 1, 1, 1] [2018-09-26 22:00:10,633 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:10,633 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:10,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1970439200, now seen corresponding path program 114 times [2018-09-26 22:00:10,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:10,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:10,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:10,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:11,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:11,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:11,612 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 22:00:11,725 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2018-09-26 22:00:11,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:11,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 0 proven. 6555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:12,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:12,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-26 22:00:12,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-26 22:00:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-26 22:00:12,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:12,088 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 117 states. [2018-09-26 22:00:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:13,217 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-26 22:00:13,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-26 22:00:13,218 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 117 [2018-09-26 22:00:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:13,218 INFO L225 Difference]: With dead ends: 121 [2018-09-26 22:00:13,218 INFO L226 Difference]: Without dead ends: 119 [2018-09-26 22:00:13,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-26 22:00:13,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-26 22:00:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-26 22:00:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-26 22:00:13,220 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 117 [2018-09-26 22:00:13,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:13,220 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-26 22:00:13,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-26 22:00:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-26 22:00:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-26 22:00:13,221 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:13,221 INFO L375 BasicCegarLoop]: trace histogram [115, 1, 1, 1] [2018-09-26 22:00:13,221 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:13,221 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:13,222 INFO L82 PathProgramCache]: Analyzing trace with hash 954069190, now seen corresponding path program 115 times [2018-09-26 22:00:13,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:13,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:13,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:13,222 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:13,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:14,216 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:14,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:14,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:14,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:14,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:14,673 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:14,673 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-26 22:00:14,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-26 22:00:14,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-26 22:00:14,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:14,675 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 118 states. [2018-09-26 22:00:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:15,551 INFO L93 Difference]: Finished difference Result 122 states and 122 transitions. [2018-09-26 22:00:15,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-26 22:00:15,551 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118 [2018-09-26 22:00:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:15,552 INFO L225 Difference]: With dead ends: 122 [2018-09-26 22:00:15,552 INFO L226 Difference]: Without dead ends: 120 [2018-09-26 22:00:15,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:15,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-09-26 22:00:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-09-26 22:00:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-09-26 22:00:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-09-26 22:00:15,554 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 118 [2018-09-26 22:00:15,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:15,554 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-09-26 22:00:15,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-26 22:00:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-09-26 22:00:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-09-26 22:00:15,554 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:15,554 INFO L375 BasicCegarLoop]: trace histogram [116, 1, 1, 1] [2018-09-26 22:00:15,555 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:15,555 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:15,555 INFO L82 PathProgramCache]: Analyzing trace with hash -488630048, now seen corresponding path program 116 times [2018-09-26 22:00:15,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:15,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:15,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:15,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:15,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:16,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:16,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:16,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 22:00:16,650 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 22:00:16,650 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:16,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:17,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 0 proven. 6786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:17,027 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:17,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-26 22:00:17,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-26 22:00:17,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-26 22:00:17,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:17,030 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 119 states. [2018-09-26 22:00:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:18,123 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-09-26 22:00:18,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-26 22:00:18,123 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 119 [2018-09-26 22:00:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:18,123 INFO L225 Difference]: With dead ends: 123 [2018-09-26 22:00:18,124 INFO L226 Difference]: Without dead ends: 121 [2018-09-26 22:00:18,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-09-26 22:00:18,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-09-26 22:00:18,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-26 22:00:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-09-26 22:00:18,126 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 119 [2018-09-26 22:00:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:18,126 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-09-26 22:00:18,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-26 22:00:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-09-26 22:00:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-09-26 22:00:18,126 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:18,126 INFO L375 BasicCegarLoop]: trace histogram [117, 1, 1, 1] [2018-09-26 22:00:18,127 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:18,127 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:18,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2032333830, now seen corresponding path program 117 times [2018-09-26 22:00:18,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:18,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:18,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:18,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:18,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:19,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:19,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:19,206 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 22:00:19,336 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2018-09-26 22:00:19,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:19,339 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:19,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:19,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-26 22:00:19,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-26 22:00:19,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-26 22:00:19,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:19,722 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 120 states. [2018-09-26 22:00:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:20,791 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-09-26 22:00:20,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-26 22:00:20,791 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 120 [2018-09-26 22:00:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:20,792 INFO L225 Difference]: With dead ends: 124 [2018-09-26 22:00:20,792 INFO L226 Difference]: Without dead ends: 122 [2018-09-26 22:00:20,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-09-26 22:00:20,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-09-26 22:00:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-09-26 22:00:20,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2018-09-26 22:00:20,795 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 120 [2018-09-26 22:00:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:20,795 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2018-09-26 22:00:20,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-26 22:00:20,795 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2018-09-26 22:00:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-09-26 22:00:20,795 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:20,795 INFO L375 BasicCegarLoop]: trace histogram [118, 1, 1, 1] [2018-09-26 22:00:20,795 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:20,796 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:20,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1422164576, now seen corresponding path program 118 times [2018-09-26 22:00:20,796 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:20,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:20,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:20,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:21,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:21,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:21,840 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:00:21,914 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:00:21,915 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:21,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 0 proven. 7021 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:22,295 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:22,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-26 22:00:22,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-26 22:00:22,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-26 22:00:22,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:22,298 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 121 states. [2018-09-26 22:00:23,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:23,304 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-26 22:00:23,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-26 22:00:23,304 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 121 [2018-09-26 22:00:23,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:23,305 INFO L225 Difference]: With dead ends: 125 [2018-09-26 22:00:23,305 INFO L226 Difference]: Without dead ends: 123 [2018-09-26 22:00:23,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-26 22:00:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-26 22:00:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-26 22:00:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-26 22:00:23,307 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 121 [2018-09-26 22:00:23,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:23,307 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-26 22:00:23,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-26 22:00:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-26 22:00:23,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-26 22:00:23,308 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:23,308 INFO L375 BasicCegarLoop]: trace histogram [119, 1, 1, 1] [2018-09-26 22:00:23,308 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:23,308 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:23,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1137432762, now seen corresponding path program 119 times [2018-09-26 22:00:23,309 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:23,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:23,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:23,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:23,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:24,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:24,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:24,400 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:00:24,524 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2018-09-26 22:00:24,524 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:24,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:24,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:24,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:24,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-26 22:00:24,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-26 22:00:24,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-26 22:00:24,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:24,926 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 122 states. [2018-09-26 22:00:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:25,998 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2018-09-26 22:00:25,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-26 22:00:25,998 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122 [2018-09-26 22:00:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:25,998 INFO L225 Difference]: With dead ends: 126 [2018-09-26 22:00:25,999 INFO L226 Difference]: Without dead ends: 124 [2018-09-26 22:00:25,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-09-26 22:00:26,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2018-09-26 22:00:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-09-26 22:00:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2018-09-26 22:00:26,001 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 122 [2018-09-26 22:00:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:26,002 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2018-09-26 22:00:26,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-26 22:00:26,002 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2018-09-26 22:00:26,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-09-26 22:00:26,002 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:26,002 INFO L375 BasicCegarLoop]: trace histogram [120, 1, 1, 1] [2018-09-26 22:00:26,003 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:26,003 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:26,003 INFO L82 PathProgramCache]: Analyzing trace with hash -900681120, now seen corresponding path program 120 times [2018-09-26 22:00:26,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:26,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:26,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:26,004 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:26,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:27,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:27,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:27,151 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 22:00:27,276 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-26 22:00:27,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:27,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 0 proven. 7260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:27,661 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:27,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-26 22:00:27,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-26 22:00:27,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-26 22:00:27,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:27,664 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 123 states. [2018-09-26 22:00:28,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:28,853 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-09-26 22:00:28,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-26 22:00:28,854 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 123 [2018-09-26 22:00:28,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:28,854 INFO L225 Difference]: With dead ends: 127 [2018-09-26 22:00:28,854 INFO L226 Difference]: Without dead ends: 125 [2018-09-26 22:00:28,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-09-26 22:00:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-09-26 22:00:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-26 22:00:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-09-26 22:00:28,856 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 123 [2018-09-26 22:00:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:28,857 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-09-26 22:00:28,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-26 22:00:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-09-26 22:00:28,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-26 22:00:28,857 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:28,857 INFO L375 BasicCegarLoop]: trace histogram [121, 1, 1, 1] [2018-09-26 22:00:28,857 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:28,857 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:28,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2143652486, now seen corresponding path program 121 times [2018-09-26 22:00:28,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:28,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:28,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:28,858 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:28,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:29,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:29,953 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:29,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:30,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:30,427 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:30,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-26 22:00:30,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-26 22:00:30,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-26 22:00:30,430 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:30,430 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 124 states. [2018-09-26 22:00:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:31,503 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2018-09-26 22:00:31,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-26 22:00:31,504 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 124 [2018-09-26 22:00:31,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:31,504 INFO L225 Difference]: With dead ends: 128 [2018-09-26 22:00:31,504 INFO L226 Difference]: Without dead ends: 126 [2018-09-26 22:00:31,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-09-26 22:00:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-09-26 22:00:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-09-26 22:00:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-09-26 22:00:31,506 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 124 [2018-09-26 22:00:31,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:31,506 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-09-26 22:00:31,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-26 22:00:31,506 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-09-26 22:00:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-09-26 22:00:31,507 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:31,507 INFO L375 BasicCegarLoop]: trace histogram [122, 1, 1, 1] [2018-09-26 22:00:31,507 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:31,507 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:31,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2028713760, now seen corresponding path program 122 times [2018-09-26 22:00:31,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:31,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:31,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:31,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:31,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:32,612 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:32,612 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:32,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 22:00:32,684 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 22:00:32,684 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:32,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 7503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:33,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:33,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-09-26 22:00:33,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-09-26 22:00:33,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-09-26 22:00:33,117 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:33,117 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 125 states. [2018-09-26 22:00:34,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:34,195 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-26 22:00:34,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-09-26 22:00:34,195 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 125 [2018-09-26 22:00:34,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:34,195 INFO L225 Difference]: With dead ends: 129 [2018-09-26 22:00:34,195 INFO L226 Difference]: Without dead ends: 127 [2018-09-26 22:00:34,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:34,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-26 22:00:34,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-26 22:00:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-26 22:00:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-26 22:00:34,198 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 125 [2018-09-26 22:00:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:34,199 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-26 22:00:34,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-09-26 22:00:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-26 22:00:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-26 22:00:34,199 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:34,199 INFO L375 BasicCegarLoop]: trace histogram [123, 1, 1, 1] [2018-09-26 22:00:34,200 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:34,200 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:34,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1534386746, now seen corresponding path program 123 times [2018-09-26 22:00:34,200 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:34,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:34,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:34,201 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:34,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:35,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:35,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:35,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 22:00:35,502 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2018-09-26 22:00:35,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:35,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:35,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:35,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-09-26 22:00:35,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-09-26 22:00:35,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-09-26 22:00:35,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:35,914 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 126 states. [2018-09-26 22:00:37,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:37,018 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-09-26 22:00:37,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-09-26 22:00:37,018 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126 [2018-09-26 22:00:37,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:37,018 INFO L225 Difference]: With dead ends: 130 [2018-09-26 22:00:37,018 INFO L226 Difference]: Without dead ends: 128 [2018-09-26 22:00:37,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-09-26 22:00:37,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2018-09-26 22:00:37,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-09-26 22:00:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions. [2018-09-26 22:00:37,021 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 126 [2018-09-26 22:00:37,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:37,021 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions. [2018-09-26 22:00:37,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-09-26 22:00:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions. [2018-09-26 22:00:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-09-26 22:00:37,021 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:37,021 INFO L375 BasicCegarLoop]: trace histogram [124, 1, 1, 1] [2018-09-26 22:00:37,021 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:37,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:37,022 INFO L82 PathProgramCache]: Analyzing trace with hash -321352736, now seen corresponding path program 124 times [2018-09-26 22:00:37,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:37,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:37,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:37,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:37,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:38,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:38,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:38,183 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:00:38,263 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:00:38,263 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:38,267 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:38,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 0 proven. 7750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:38,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:38,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-09-26 22:00:38,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-09-26 22:00:38,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-09-26 22:00:38,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:38,737 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 127 states. [2018-09-26 22:00:40,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:40,071 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-09-26 22:00:40,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-09-26 22:00:40,071 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 127 [2018-09-26 22:00:40,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:40,072 INFO L225 Difference]: With dead ends: 131 [2018-09-26 22:00:40,072 INFO L226 Difference]: Without dead ends: 129 [2018-09-26 22:00:40,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-09-26 22:00:40,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-09-26 22:00:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-26 22:00:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-09-26 22:00:40,075 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 127 [2018-09-26 22:00:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:40,075 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-09-26 22:00:40,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-09-26 22:00:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-09-26 22:00:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-09-26 22:00:40,076 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:40,076 INFO L375 BasicCegarLoop]: trace histogram [125, 1, 1, 1] [2018-09-26 22:00:40,076 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:40,076 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:40,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1372004090, now seen corresponding path program 125 times [2018-09-26 22:00:40,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:40,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:40,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:40,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:40,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:41,229 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:41,230 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:41,238 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:00:41,373 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2018-09-26 22:00:41,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:41,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:41,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:41,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-09-26 22:00:41,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-09-26 22:00:41,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-09-26 22:00:41,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:41,787 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 128 states. [2018-09-26 22:00:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:43,122 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2018-09-26 22:00:43,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-26 22:00:43,122 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 128 [2018-09-26 22:00:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:43,123 INFO L225 Difference]: With dead ends: 132 [2018-09-26 22:00:43,123 INFO L226 Difference]: Without dead ends: 130 [2018-09-26 22:00:43,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-09-26 22:00:43,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2018-09-26 22:00:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-09-26 22:00:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions. [2018-09-26 22:00:43,126 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 128 [2018-09-26 22:00:43,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:43,126 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions. [2018-09-26 22:00:43,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-09-26 22:00:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions. [2018-09-26 22:00:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-09-26 22:00:43,127 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:43,127 INFO L375 BasicCegarLoop]: trace histogram [126, 1, 1, 1] [2018-09-26 22:00:43,127 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:43,128 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash 417542304, now seen corresponding path program 126 times [2018-09-26 22:00:43,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:43,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:43,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:43,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:43,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:44,354 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:44,354 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:44,361 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 22:00:44,489 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 64 check-sat command(s) [2018-09-26 22:00:44,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:44,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 0 proven. 8001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:44,933 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:44,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-09-26 22:00:44,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-09-26 22:00:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-09-26 22:00:44,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:44,936 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 129 states. [2018-09-26 22:00:46,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:46,292 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-26 22:00:46,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-09-26 22:00:46,292 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 129 [2018-09-26 22:00:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:46,293 INFO L225 Difference]: With dead ends: 133 [2018-09-26 22:00:46,293 INFO L226 Difference]: Without dead ends: 131 [2018-09-26 22:00:46,293 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-26 22:00:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-26 22:00:46,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-26 22:00:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-26 22:00:46,295 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 129 [2018-09-26 22:00:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:46,295 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-26 22:00:46,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-09-26 22:00:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-26 22:00:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-26 22:00:46,296 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:46,296 INFO L375 BasicCegarLoop]: trace histogram [127, 1, 1, 1] [2018-09-26 22:00:46,296 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:46,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash 58905670, now seen corresponding path program 127 times [2018-09-26 22:00:46,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:46,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:46,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:46,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:46,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:47,523 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:47,523 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:47,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:47,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:48,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:48,028 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-09-26 22:00:48,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-09-26 22:00:48,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-09-26 22:00:48,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:48,031 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 130 states. [2018-09-26 22:00:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:49,362 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2018-09-26 22:00:49,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-09-26 22:00:49,363 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 130 [2018-09-26 22:00:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:49,364 INFO L225 Difference]: With dead ends: 134 [2018-09-26 22:00:49,364 INFO L226 Difference]: Without dead ends: 132 [2018-09-26 22:00:49,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-09-26 22:00:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-09-26 22:00:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-09-26 22:00:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-09-26 22:00:49,367 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 130 [2018-09-26 22:00:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:49,367 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-09-26 22:00:49,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-09-26 22:00:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-09-26 22:00:49,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-26 22:00:49,368 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:49,368 INFO L375 BasicCegarLoop]: trace histogram [128, 1, 1, 1] [2018-09-26 22:00:49,368 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:49,368 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:49,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1826071904, now seen corresponding path program 128 times [2018-09-26 22:00:49,368 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:49,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:49,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:49,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:00:49,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:50,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:50,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:50,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 22:00:50,674 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 22:00:50,674 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:50,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8256 backedges. 0 proven. 8256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:51,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:51,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-09-26 22:00:51,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-09-26 22:00:51,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-09-26 22:00:51,142 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:51,142 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 131 states. [2018-09-26 22:00:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:52,404 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-09-26 22:00:52,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-26 22:00:52,405 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 131 [2018-09-26 22:00:52,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:52,405 INFO L225 Difference]: With dead ends: 135 [2018-09-26 22:00:52,405 INFO L226 Difference]: Without dead ends: 133 [2018-09-26 22:00:52,406 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:52,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-09-26 22:00:52,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-09-26 22:00:52,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-09-26 22:00:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-09-26 22:00:52,408 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 131 [2018-09-26 22:00:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:52,409 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-09-26 22:00:52,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-09-26 22:00:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-09-26 22:00:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-26 22:00:52,409 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:52,409 INFO L375 BasicCegarLoop]: trace histogram [129, 1, 1, 1] [2018-09-26 22:00:52,410 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:52,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:52,410 INFO L82 PathProgramCache]: Analyzing trace with hash 773650310, now seen corresponding path program 129 times [2018-09-26 22:00:52,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:52,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:52,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:52,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:52,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:53,676 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:53,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:53,683 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 22:00:53,834 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 66 check-sat command(s) [2018-09-26 22:00:53,835 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:53,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:54,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:54,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-09-26 22:00:54,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-09-26 22:00:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-09-26 22:00:54,296 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:54,296 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 132 states. [2018-09-26 22:00:55,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:55,415 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-09-26 22:00:55,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-09-26 22:00:55,415 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 132 [2018-09-26 22:00:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:55,415 INFO L225 Difference]: With dead ends: 136 [2018-09-26 22:00:55,416 INFO L226 Difference]: Without dead ends: 134 [2018-09-26 22:00:55,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-09-26 22:00:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2018-09-26 22:00:55,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-09-26 22:00:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2018-09-26 22:00:55,418 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 132 [2018-09-26 22:00:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:55,418 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2018-09-26 22:00:55,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-09-26 22:00:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2018-09-26 22:00:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-26 22:00:55,419 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:55,419 INFO L375 BasicCegarLoop]: trace histogram [130, 1, 1, 1] [2018-09-26 22:00:55,419 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:55,420 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:55,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1786648032, now seen corresponding path program 130 times [2018-09-26 22:00:55,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:55,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:55,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:55,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:55,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:56,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:56,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:56,690 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:00:56,773 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:00:56,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:56,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:00:57,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 0 proven. 8515 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:57,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:00:57,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-09-26 22:00:57,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-09-26 22:00:57,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-09-26 22:00:57,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:00:57,231 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 133 states. [2018-09-26 22:00:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:00:58,423 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-26 22:00:58,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-09-26 22:00:58,423 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 133 [2018-09-26 22:00:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:00:58,423 INFO L225 Difference]: With dead ends: 137 [2018-09-26 22:00:58,424 INFO L226 Difference]: Without dead ends: 135 [2018-09-26 22:00:58,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:00:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-26 22:00:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-26 22:00:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-26 22:00:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-26 22:00:58,426 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 133 [2018-09-26 22:00:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:00:58,426 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-26 22:00:58,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-09-26 22:00:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-26 22:00:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-26 22:00:58,427 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:00:58,427 INFO L375 BasicCegarLoop]: trace histogram [131, 1, 1, 1] [2018-09-26 22:00:58,427 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:00:58,428 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:00:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 448481990, now seen corresponding path program 131 times [2018-09-26 22:00:58,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:00:58,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:00:58,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:58,428 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:00:58,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:00:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:00:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:00:59,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:00:59,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:00:59,771 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:00:59,917 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2018-09-26 22:00:59,917 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:00:59,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:00,366 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:00,366 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-09-26 22:01:00,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-09-26 22:01:00,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-09-26 22:01:00,369 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:00,369 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 134 states. [2018-09-26 22:01:01,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:01,904 INFO L93 Difference]: Finished difference Result 138 states and 138 transitions. [2018-09-26 22:01:01,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-09-26 22:01:01,904 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 134 [2018-09-26 22:01:01,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:01,905 INFO L225 Difference]: With dead ends: 138 [2018-09-26 22:01:01,905 INFO L226 Difference]: Without dead ends: 136 [2018-09-26 22:01:01,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:01,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-09-26 22:01:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2018-09-26 22:01:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-09-26 22:01:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions. [2018-09-26 22:01:01,907 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 134 [2018-09-26 22:01:01,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:01,907 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions. [2018-09-26 22:01:01,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-09-26 22:01:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions. [2018-09-26 22:01:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-26 22:01:01,908 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:01,908 INFO L375 BasicCegarLoop]: trace histogram [132, 1, 1, 1] [2018-09-26 22:01:01,908 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:01,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1018035936, now seen corresponding path program 132 times [2018-09-26 22:01:01,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:01,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:01,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:01,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:01,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:03,183 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:03,183 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:03,191 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 22:01:03,330 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-26 22:01:03,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:03,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8778 backedges. 0 proven. 8778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:03,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:03,781 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-09-26 22:01:03,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-09-26 22:01:03,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-09-26 22:01:03,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:03,783 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 135 states. [2018-09-26 22:01:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:05,284 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-09-26 22:01:05,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-09-26 22:01:05,284 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 135 [2018-09-26 22:01:05,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:05,285 INFO L225 Difference]: With dead ends: 139 [2018-09-26 22:01:05,285 INFO L226 Difference]: Without dead ends: 137 [2018-09-26 22:01:05,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-09-26 22:01:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-09-26 22:01:05,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-09-26 22:01:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-09-26 22:01:05,287 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 135 [2018-09-26 22:01:05,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:05,287 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-09-26 22:01:05,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-09-26 22:01:05,287 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-09-26 22:01:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-09-26 22:01:05,287 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:05,287 INFO L375 BasicCegarLoop]: trace histogram [133, 1, 1, 1] [2018-09-26 22:01:05,288 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:05,288 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:05,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1494339078, now seen corresponding path program 133 times [2018-09-26 22:01:05,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:05,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:05,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:05,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:05,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:06,584 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:06,584 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:06,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:01:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:06,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:07,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:07,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-09-26 22:01:07,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-09-26 22:01:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-09-26 22:01:07,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:07,138 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 136 states. [2018-09-26 22:01:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:08,623 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2018-09-26 22:01:08,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-09-26 22:01:08,623 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 136 [2018-09-26 22:01:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:08,624 INFO L225 Difference]: With dead ends: 140 [2018-09-26 22:01:08,624 INFO L226 Difference]: Without dead ends: 138 [2018-09-26 22:01:08,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:08,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-09-26 22:01:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-09-26 22:01:08,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-09-26 22:01:08,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-09-26 22:01:08,626 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 136 [2018-09-26 22:01:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:08,626 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-09-26 22:01:08,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-09-26 22:01:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-09-26 22:01:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-26 22:01:08,626 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:08,626 INFO L375 BasicCegarLoop]: trace histogram [134, 1, 1, 1] [2018-09-26 22:01:08,627 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:08,627 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:08,627 INFO L82 PathProgramCache]: Analyzing trace with hash -920132704, now seen corresponding path program 134 times [2018-09-26 22:01:08,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:08,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:08,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:08,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:01:08,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:09,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:09,984 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:09,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:09,992 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 22:01:10,066 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 22:01:10,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:10,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 9045 backedges. 0 proven. 9045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:10,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:10,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-09-26 22:01:10,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-09-26 22:01:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-09-26 22:01:10,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:10,530 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 137 states. [2018-09-26 22:01:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:11,763 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-26 22:01:11,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-09-26 22:01:11,763 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 137 [2018-09-26 22:01:11,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:11,763 INFO L225 Difference]: With dead ends: 141 [2018-09-26 22:01:11,763 INFO L226 Difference]: Without dead ends: 139 [2018-09-26 22:01:11,764 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:11,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-26 22:01:11,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-26 22:01:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-26 22:01:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-26 22:01:11,765 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 137 [2018-09-26 22:01:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:11,766 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-26 22:01:11,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-09-26 22:01:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-26 22:01:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-26 22:01:11,766 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:11,767 INFO L375 BasicCegarLoop]: trace histogram [135, 1, 1, 1] [2018-09-26 22:01:11,767 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:11,767 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1540653382, now seen corresponding path program 135 times [2018-09-26 22:01:11,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:11,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:11,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:11,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:11,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:13,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:13,121 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:13,121 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:13,129 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 22:01:13,289 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2018-09-26 22:01:13,289 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:13,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:13,759 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:13,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-09-26 22:01:13,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-09-26 22:01:13,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-09-26 22:01:13,763 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:13,763 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 138 states. [2018-09-26 22:01:15,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:15,253 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-09-26 22:01:15,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-09-26 22:01:15,254 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 138 [2018-09-26 22:01:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:15,254 INFO L225 Difference]: With dead ends: 142 [2018-09-26 22:01:15,254 INFO L226 Difference]: Without dead ends: 140 [2018-09-26 22:01:15,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-09-26 22:01:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2018-09-26 22:01:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-09-26 22:01:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2018-09-26 22:01:15,257 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 138 [2018-09-26 22:01:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:15,257 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2018-09-26 22:01:15,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-09-26 22:01:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2018-09-26 22:01:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-09-26 22:01:15,258 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:15,258 INFO L375 BasicCegarLoop]: trace histogram [136, 1, 1, 1] [2018-09-26 22:01:15,258 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:15,258 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:15,258 INFO L82 PathProgramCache]: Analyzing trace with hash 515610720, now seen corresponding path program 136 times [2018-09-26 22:01:15,258 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:15,259 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:15,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:15,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:15,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:16,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:16,639 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:16,639 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:16,647 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:01:16,735 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:01:16,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:16,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:17,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9316 backedges. 0 proven. 9316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:17,201 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:17,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-09-26 22:01:17,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-09-26 22:01:17,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-09-26 22:01:17,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:17,204 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 139 states. [2018-09-26 22:01:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:18,675 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-09-26 22:01:18,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-09-26 22:01:18,675 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 139 [2018-09-26 22:01:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:18,676 INFO L225 Difference]: With dead ends: 143 [2018-09-26 22:01:18,676 INFO L226 Difference]: Without dead ends: 141 [2018-09-26 22:01:18,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-09-26 22:01:18,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-09-26 22:01:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-09-26 22:01:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-09-26 22:01:18,679 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 139 [2018-09-26 22:01:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:18,679 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-09-26 22:01:18,679 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-09-26 22:01:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-09-26 22:01:18,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-26 22:01:18,680 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:18,680 INFO L375 BasicCegarLoop]: trace histogram [137, 1, 1, 1] [2018-09-26 22:01:18,680 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:18,680 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:18,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1195940730, now seen corresponding path program 137 times [2018-09-26 22:01:18,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:18,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:18,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:18,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:18,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:20,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:20,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:20,129 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:01:20,288 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 70 check-sat command(s) [2018-09-26 22:01:20,289 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:20,294 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:20,787 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:20,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-09-26 22:01:20,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-09-26 22:01:20,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-09-26 22:01:20,790 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:20,790 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 140 states. [2018-09-26 22:01:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:22,410 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2018-09-26 22:01:22,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-09-26 22:01:22,410 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 140 [2018-09-26 22:01:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:22,410 INFO L225 Difference]: With dead ends: 144 [2018-09-26 22:01:22,411 INFO L226 Difference]: Without dead ends: 142 [2018-09-26 22:01:22,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-09-26 22:01:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2018-09-26 22:01:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2018-09-26 22:01:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2018-09-26 22:01:22,413 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 140 [2018-09-26 22:01:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:22,413 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2018-09-26 22:01:22,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-09-26 22:01:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2018-09-26 22:01:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-09-26 22:01:22,413 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:22,413 INFO L375 BasicCegarLoop]: trace histogram [138, 1, 1, 1] [2018-09-26 22:01:22,414 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:22,414 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:22,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1580539168, now seen corresponding path program 138 times [2018-09-26 22:01:22,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:22,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:22,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:22,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:22,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:23,832 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:23,832 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:23,839 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-26 22:01:23,986 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 70 check-sat command(s) [2018-09-26 22:01:23,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:23,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9591 backedges. 0 proven. 9591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:24,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:24,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-09-26 22:01:24,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-09-26 22:01:24,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-09-26 22:01:24,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:24,484 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 141 states. [2018-09-26 22:01:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:26,238 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-26 22:01:26,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-09-26 22:01:26,239 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 141 [2018-09-26 22:01:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:26,239 INFO L225 Difference]: With dead ends: 145 [2018-09-26 22:01:26,239 INFO L226 Difference]: Without dead ends: 143 [2018-09-26 22:01:26,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:26,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-26 22:01:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-26 22:01:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-26 22:01:26,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-26 22:01:26,241 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 141 [2018-09-26 22:01:26,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:26,242 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-26 22:01:26,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-09-26 22:01:26,242 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-26 22:01:26,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-26 22:01:26,242 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:26,242 INFO L375 BasicCegarLoop]: trace histogram [139, 1, 1, 1] [2018-09-26 22:01:26,243 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:26,243 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1752070086, now seen corresponding path program 139 times [2018-09-26 22:01:26,243 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:26,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:26,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:26,243 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:26,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:27,673 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:27,674 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:27,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:01:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:27,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:28,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:28,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-09-26 22:01:28,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-09-26 22:01:28,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-09-26 22:01:28,247 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:28,247 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 142 states. [2018-09-26 22:01:29,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:29,815 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2018-09-26 22:01:29,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-09-26 22:01:29,816 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 142 [2018-09-26 22:01:29,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:29,816 INFO L225 Difference]: With dead ends: 146 [2018-09-26 22:01:29,816 INFO L226 Difference]: Without dead ends: 144 [2018-09-26 22:01:29,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-09-26 22:01:29,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-09-26 22:01:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-09-26 22:01:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-09-26 22:01:29,818 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 142 [2018-09-26 22:01:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:29,819 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-09-26 22:01:29,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-09-26 22:01:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-09-26 22:01:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-26 22:01:29,819 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:29,819 INFO L375 BasicCegarLoop]: trace histogram [140, 1, 1, 1] [2018-09-26 22:01:29,819 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:29,819 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:29,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1520406048, now seen corresponding path program 140 times [2018-09-26 22:01:29,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:29,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:29,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:29,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 22:01:29,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:31,295 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:31,295 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:31,303 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-26 22:01:31,380 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-26 22:01:31,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:31,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 9870 backedges. 0 proven. 9870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:31,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:31,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-09-26 22:01:31,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-09-26 22:01:31,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-09-26 22:01:31,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:31,881 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 143 states. [2018-09-26 22:01:33,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:33,588 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-09-26 22:01:33,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-09-26 22:01:33,589 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 143 [2018-09-26 22:01:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:33,589 INFO L225 Difference]: With dead ends: 147 [2018-09-26 22:01:33,589 INFO L226 Difference]: Without dead ends: 145 [2018-09-26 22:01:33,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:33,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-26 22:01:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-09-26 22:01:33,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-09-26 22:01:33,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-09-26 22:01:33,592 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 143 [2018-09-26 22:01:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:33,592 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-09-26 22:01:33,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-09-26 22:01:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-09-26 22:01:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-09-26 22:01:33,592 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:33,592 INFO L375 BasicCegarLoop]: trace histogram [141, 1, 1, 1] [2018-09-26 22:01:33,593 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:33,593 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:33,593 INFO L82 PathProgramCache]: Analyzing trace with hash 112048902, now seen corresponding path program 141 times [2018-09-26 22:01:33,593 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:33,593 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:33,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:33,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:33,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:35,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:35,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:35,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-26 22:01:35,267 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 72 check-sat command(s) [2018-09-26 22:01:35,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:35,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:35,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:35,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-09-26 22:01:35,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-09-26 22:01:35,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-09-26 22:01:35,774 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:35,774 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 144 states. [2018-09-26 22:01:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:37,639 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-09-26 22:01:37,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-09-26 22:01:37,639 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 144 [2018-09-26 22:01:37,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:37,640 INFO L225 Difference]: With dead ends: 148 [2018-09-26 22:01:37,640 INFO L226 Difference]: Without dead ends: 146 [2018-09-26 22:01:37,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-09-26 22:01:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-09-26 22:01:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-09-26 22:01:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2018-09-26 22:01:37,642 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 144 [2018-09-26 22:01:37,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:37,642 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2018-09-26 22:01:37,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-09-26 22:01:37,642 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2018-09-26 22:01:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-26 22:01:37,643 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:37,643 INFO L375 BasicCegarLoop]: trace histogram [142, 1, 1, 1] [2018-09-26 22:01:37,643 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:37,643 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:37,643 INFO L82 PathProgramCache]: Analyzing trace with hash -821455200, now seen corresponding path program 142 times [2018-09-26 22:01:37,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:37,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:37,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:37,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:37,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:39,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:39,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:39,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:39,137 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-26 22:01:39,246 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-26 22:01:39,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:39,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10153 backedges. 0 proven. 10153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:39,798 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:39,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-09-26 22:01:39,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-09-26 22:01:39,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-09-26 22:01:39,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:39,801 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 145 states. [2018-09-26 22:01:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 22:01:41,295 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-26 22:01:41,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-09-26 22:01:41,295 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 145 [2018-09-26 22:01:41,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 22:01:41,296 INFO L225 Difference]: With dead ends: 149 [2018-09-26 22:01:41,296 INFO L226 Difference]: Without dead ends: 147 [2018-09-26 22:01:41,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 22:01:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-26 22:01:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-26 22:01:41,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-26 22:01:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-26 22:01:41,298 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 145 [2018-09-26 22:01:41,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 22:01:41,299 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-26 22:01:41,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-09-26 22:01:41,299 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-26 22:01:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-26 22:01:41,299 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 22:01:41,299 INFO L375 BasicCegarLoop]: trace histogram [143, 1, 1, 1] [2018-09-26 22:01:41,300 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 22:01:41,300 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 22:01:41,300 INFO L82 PathProgramCache]: Analyzing trace with hash 304688710, now seen corresponding path program 143 times [2018-09-26 22:01:41,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 22:01:41,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 22:01:41,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:41,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-26 22:01:41,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 22:01:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 22:01:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:42,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 22:01:42,840 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-26 22:01:42,848 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-26 22:01:43,020 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 73 check-sat command(s) [2018-09-26 22:01:43,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-26 22:01:43,025 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 22:01:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 22:01:43,537 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-26 22:01:43,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-09-26 22:01:43,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-09-26 22:01:43,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-09-26 22:01:43,540 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 22:01:43,540 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 146 states. Received shutdown request... [2018-09-26 22:01:44,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-09-26 22:01:44,879 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 22:01:44,884 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 22:01:44,884 INFO L202 PluginConnector]: Adding new model Luxembourg.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 10:01:44 BoogieIcfgContainer [2018-09-26 22:01:44,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 22:01:44,885 INFO L168 Benchmark]: Toolchain (without parser) took 246225.25 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 453.5 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -398.0 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-09-26 22:01:44,887 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 22:01:44,887 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 22:01:44,887 INFO L168 Benchmark]: Boogie Preprocessor took 20.91 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 22:01:44,888 INFO L168 Benchmark]: RCFGBuilder took 313.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 22:01:44,888 INFO L168 Benchmark]: TraceAbstraction took 245843.67 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 453.5 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -419.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2018-09-26 22:01:44,891 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.91 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 313.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245843.67 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 453.5 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -419.2 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 24]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 24). Cancelled while BasicCegarLoop was constructing difference of abstraction (147states) and FLOYD_HOARE automaton (currently 136 states, 146 states before enhancement), while ReachableStatesComputation was computing reachable states (134 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 245.7s OverallTime, 144 OverallIterations, 143 TraceHistogramMax, 96.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 432 SDtfs, 2 SDslu, 5970 SDs, 0 SdLazy, 16543 SolverSat, 254 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21166 GetRequests, 10726 SyntacticMatches, 0 SemanticMatches, 10440 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=143, 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: 0.3s AutomataMinimizationTime, 143 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 10.8s SatisfiabilityAnalysisTime, 128.6s InterpolantComputationTime, 21453 NumberOfCodeBlocks, 21453 NumberOfCodeBlocksAsserted, 2939 NumberOfCheckSat, 21166 ConstructedInterpolants, 0 QuantifiedInterpolants, 6118120 SizeOfPredicates, 143 NumberOfNonLiveVariables, 42471 ConjunctsInSsa, 10582 ConjunctsInUnsatCore, 287 InterpolantComputations, 1 PerfectInterpolantSequences, 0/995280 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/Luxembourg.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_22-01-44-900.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_22-01-44-900.csv Completed graceful shutdown