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/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:09:37,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:09:37,604 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:09:37,616 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:09:37,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:09:37,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:09:37,619 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:09:37,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:09:37,622 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:09:37,623 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:09:37,624 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-03 09:09:37,624 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-03 09:09:37,625 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-03 09:09:37,627 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-03 09:09:37,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-03 09:09:37,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-03 09:09:37,630 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-03 09:09:37,632 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-03 09:09:37,634 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-03 09:09:37,636 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-03 09:09:37,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-03 09:09:37,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-03 09:09:37,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-03 09:09:37,641 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-03 09:09:37,641 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-03 09:09:37,642 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-03 09:09:37,643 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-03 09:09:37,644 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-03 09:09:37,645 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-03 09:09:37,646 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-03 09:09:37,646 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-03 09:09:37,647 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-03 09:09:37,647 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-03 09:09:37,647 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-03 09:09:37,648 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-03 09:09:37,649 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-03 09:09:37,649 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-03 09:09:37,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:09:37,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:09:37,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:09:37,666 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:09:37,667 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:09:37,667 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:09:37,667 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:09:37,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:09:37,667 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:09:37,668 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:09:37,668 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:09:37,668 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:09:37,668 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:09:37,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:09:37,672 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:09:37,672 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:09:37,672 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:09:37,672 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:09:37,673 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:09:37,673 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:09:37,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:09:37,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:09:37,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:09:37,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:09:37,674 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:09:37,674 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:09:37,674 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:09:37,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:09:37,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:09:37,675 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:09:37,675 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:09:37,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:09:37,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:09:37,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:09:37,750 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:09:37,751 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:09:37,752 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-10-03 09:09:37,752 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-10-03 09:09:37,803 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:09:37,807 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:09:37,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:09:37,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:09:37,808 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:09:37,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:09:37,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:09:37,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:09:37,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:09:37,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... [2018-10-03 09:09:37,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:09:37,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:09:37,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:09:37,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:09:37,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:09:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:09:37,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:09:38,198 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:09:38,199 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:09:38 BoogieIcfgContainer [2018-10-03 09:09:38,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:09:38,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:09:38,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:09:38,206 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:09:38,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:09:37" (1/2) ... [2018-10-03 09:09:38,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53124772 and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:09:38, skipping insertion in model container [2018-10-03 09:09:38,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:09:38" (2/2) ... [2018-10-03 09:09:38,210 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-10-03 09:09:38,218 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:09:38,226 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:09:38,277 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:09:38,278 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:09:38,278 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:09:38,279 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:09:38,279 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:09:38,279 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:09:38,279 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:09:38,280 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:09:38,280 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:09:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-03 09:09:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:09:38,302 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:38,304 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:09:38,305 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:38,311 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:38,312 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-03 09:09:38,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:38,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:38,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:38,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:38,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:09:38,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:09:38,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:09:38,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:09:38,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:38,507 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-03 09:09:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:38,542 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-03 09:09:38,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:09:38,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-03 09:09:38,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:38,556 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:09:38,556 INFO L226 Difference]: Without dead ends: 7 [2018-10-03 09:09:38,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:09:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-03 09:09:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-03 09:09:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:09:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:09:38,596 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-03 09:09:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:38,597 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:09:38,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:09:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:09:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:09:38,598 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:38,598 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-03 09:09:38,598 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:38,599 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:38,599 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-03 09:09:38,599 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:38,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:38,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:38,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:38,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:38,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:38,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:38,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:38,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:38,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:38,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:09:38,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:09:38,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:09:38,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:38,959 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-03 09:09:39,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:39,043 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-03 09:09:39,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:09:39,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-03 09:09:39,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:39,044 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:09:39,045 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:09:39,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-03 09:09:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:09:39,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:09:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:09:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:09:39,049 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-03 09:09:39,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:39,049 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:09:39,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:09:39,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:09:39,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:09:39,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:39,050 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-03 09:09:39,050 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:39,051 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-03 09:09:39,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:39,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:39,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:39,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:39,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:39,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:39,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:39,189 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:39,219 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:39,220 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:39,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:39,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:39,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:09:39,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:09:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:09:39,300 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:39,300 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-03 09:09:39,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:39,352 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-03 09:09:39,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:09:39,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-03 09:09:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:39,353 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:09:39,354 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:09:39,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-03 09:09:39,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:09:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:09:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:09:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-03 09:09:39,359 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-03 09:09:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:39,359 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-03 09:09:39,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:09:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-03 09:09:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:09:39,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:39,363 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-03 09:09:39,363 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:39,364 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-03 09:09:39,364 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:39,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:39,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:39,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:39,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:39,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:39,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:39,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:39,613 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-03 09:09:39,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:39,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:39,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:39,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:09:39,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:09:39,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:09:39,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:39,847 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-03 09:09:39,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:39,880 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-03 09:09:39,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:09:39,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-03 09:09:39,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:39,882 INFO L225 Difference]: With dead ends: 15 [2018-10-03 09:09:39,882 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:09:39,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 4 [2018-10-03 09:09:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:09:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:09:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:09:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-03 09:09:39,886 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-03 09:09:39,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:39,888 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-03 09:09:39,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:09:39,888 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-03 09:09:39,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:09:39,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:39,889 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-03 09:09:39,889 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:39,890 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:39,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-03 09:09:39,890 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:39,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:39,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:39,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:39,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:40,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:40,073 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:40,105 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:40,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:40,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:40,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:09:40,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:09:40,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:09:40,216 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:40,217 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-03 09:09:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:40,246 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-03 09:09:40,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:09:40,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-03 09:09:40,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:40,247 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:09:40,247 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:09:40,248 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-03 09:09:40,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:09:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:09:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:09:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-03 09:09:40,252 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-03 09:09:40,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:40,252 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-03 09:09:40,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:09:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-03 09:09:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:09:40,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:40,254 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-03 09:09:40,254 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:40,254 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:40,254 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-03 09:09:40,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:40,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:40,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:40,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:40,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:40,455 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 [2018-10-03 09:09:40,465 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:40,497 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-03 09:09:40,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:40,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:40,561 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:40,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:09:40,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:09:40,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:09:40,584 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:40,584 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-03 09:09:40,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:40,619 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-03 09:09:40,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:09:40,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-03 09:09:40,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:40,621 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:09:40,622 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:09:40,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 6 [2018-10-03 09:09:40,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:09:40,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-03 09:09:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-03 09:09:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-03 09:09:40,627 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-03 09:09:40,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:40,627 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-03 09:09:40,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:09:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-03 09:09:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 09:09:40,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:40,628 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-03 09:09:40,628 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:40,629 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-03 09:09:40,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:40,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:40,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:40,630 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:40,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:40,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:40,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:40,903 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:41,020 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:09:41,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:41,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:41,296 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:41,318 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:41,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:09:41,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:09:41,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:09:41,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:41,320 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-03 09:09:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:41,347 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-03 09:09:41,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:09:41,350 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-03 09:09:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:41,351 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:09:41,351 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:09:41,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 7 [2018-10-03 09:09:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:09:41,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:09:41,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:09:41,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-03 09:09:41,355 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-03 09:09:41,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:41,356 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-03 09:09:41,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:09:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-03 09:09:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:09:41,357 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:41,357 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-03 09:09:41,357 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:41,357 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:41,357 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-03 09:09:41,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:41,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:41,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:41,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:41,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:41,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:41,533 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:41,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:41,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:41,797 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:41,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:41,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:09:41,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:09:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:09:41,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:41,820 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-03 09:09:41,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:41,871 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-03 09:09:41,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:09:41,872 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-03 09:09:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:41,873 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:09:41,873 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:09:41,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 8 [2018-10-03 09:09:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:09:41,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:09:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:09:41,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-03 09:09:41,879 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-03 09:09:41,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:41,879 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-03 09:09:41,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:09:41,880 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-03 09:09:41,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:09:41,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:41,882 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-03 09:09:41,883 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:41,883 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:41,883 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-03 09:09:41,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:41,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:41,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:41,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:41,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:42,155 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:09:42,171 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:42,206 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:42,207 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:42,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:42,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:09:42,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:09:42,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:09:42,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:42,299 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-03 09:09:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:42,368 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-03 09:09:42,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:09:42,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-03 09:09:42,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:42,374 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:09:42,374 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:09:42,374 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9 [2018-10-03 09:09:42,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:09:42,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:09:42,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:09:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-03 09:09:42,379 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-03 09:09:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:42,379 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-03 09:09:42,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:09:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-03 09:09:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:09:42,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:42,380 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-03 09:09:42,381 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:42,381 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:42,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-03 09:09:42,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:42,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:42,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:42,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:42,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:42,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:42,642 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-03 09:09:42,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:42,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:42,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:09:42,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:09:42,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:09:42,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:42,783 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-03 09:09:42,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:42,829 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-03 09:09:42,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:09:42,830 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-03 09:09:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:42,830 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:09:42,830 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:09:42,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 10 [2018-10-03 09:09:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:09:42,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:09:42,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:09:42,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-03 09:09:42,835 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-03 09:09:42,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:42,835 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-03 09:09:42,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:09:42,836 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-03 09:09:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:09:42,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:42,837 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-03 09:09:42,837 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:42,837 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-03 09:09:42,837 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:42,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:42,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:42,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:42,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:42,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:09:42,993 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:43,029 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:43,029 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:43,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:43,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:43,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:09:43,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:09:43,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:09:43,148 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:43,148 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-03 09:09:43,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:43,197 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-03 09:09:43,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:09:43,197 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-03 09:09:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:43,198 INFO L225 Difference]: With dead ends: 29 [2018-10-03 09:09:43,198 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:09:43,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 11 [2018-10-03 09:09:43,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:09:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:09:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:09:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-03 09:09:43,204 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-03 09:09:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:43,204 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-03 09:09:43,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:09:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-03 09:09:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:09:43,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:43,206 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-03 09:09:43,206 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:43,206 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:43,206 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-03 09:09:43,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:43,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:43,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:43,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:43,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:43,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:43,651 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 [2018-10-03 09:09:43,660 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:43,692 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-03 09:09:43,693 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:43,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:43,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:43,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:09:43,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:09:43,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:09:43,804 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:43,804 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-03 09:09:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:43,907 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-03 09:09:43,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:09:43,910 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-03 09:09:43,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:43,910 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:09:43,911 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:09:43,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 12 [2018-10-03 09:09:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:09:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:09:43,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:09:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-03 09:09:43,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-03 09:09:43,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:43,918 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-03 09:09:43,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:09:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-03 09:09:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:09:43,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:43,920 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-03 09:09:43,920 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:43,921 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-03 09:09:43,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:43,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:43,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:43,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:43,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:44,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:44,189 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 [2018-10-03 09:09:44,198 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:44,233 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:09:44,233 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:44,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:44,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:44,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:09:44,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:09:44,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:09:44,396 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:44,396 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-03 09:09:44,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:44,440 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-03 09:09:44,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:09:44,443 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-03 09:09:44,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:44,443 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:09:44,444 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:09:44,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-03 09:09:44,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:09:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:09:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:09:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-03 09:09:44,449 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-03 09:09:44,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:44,450 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-03 09:09:44,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:09:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-03 09:09:44,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:09:44,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:44,451 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-03 09:09:44,451 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:44,451 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:44,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-03 09:09:44,452 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:44,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:44,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:44,453 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:44,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:44,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:44,758 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 [2018-10-03 09:09:44,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:44,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:44,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:44,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:09:45,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:09:45,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:09:45,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:45,000 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-03 09:09:45,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:45,125 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-03 09:09:45,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:09:45,126 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-03 09:09:45,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:45,127 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:09:45,128 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:09:45,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 14 [2018-10-03 09:09:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:09:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:09:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:09:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-03 09:09:45,133 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-03 09:09:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:45,133 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-03 09:09:45,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:09:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-03 09:09:45,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:09:45,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:45,135 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-03 09:09:45,135 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:45,135 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:45,135 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-03 09:09:45,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:45,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:45,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:45,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:45,507 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:45,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:45,507 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 [2018-10-03 09:09:45,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:45,550 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:45,550 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:45,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:45,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:45,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:09:45,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:09:45,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:09:45,700 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:45,700 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-03 09:09:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:45,746 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-03 09:09:45,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:09:45,746 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-03 09:09:45,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:45,747 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:09:45,747 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:09:45,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 15 [2018-10-03 09:09:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:09:45,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:09:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:09:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-03 09:09:45,752 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-03 09:09:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:45,752 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-03 09:09:45,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:09:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-03 09:09:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:09:45,753 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:45,754 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-03 09:09:45,754 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:45,754 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:45,754 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-03 09:09:45,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:45,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:45,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:46,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:46,212 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 [2018-10-03 09:09:46,221 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:46,302 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-03 09:09:46,302 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:46,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:46,422 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:46,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:09:46,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:09:46,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:09:46,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:46,423 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-03 09:09:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:46,468 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-03 09:09:46,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:09:46,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-03 09:09:46,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:46,470 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:09:46,470 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:09:46,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 16 [2018-10-03 09:09:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:09:46,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:09:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:09:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-03 09:09:46,476 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-03 09:09:46,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:46,476 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-03 09:09:46,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:09:46,476 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-03 09:09:46,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:09:46,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:46,477 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-03 09:09:46,477 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:46,478 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:46,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-03 09:09:46,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:46,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:46,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:46,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:46,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:47,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:47,273 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 [2018-10-03 09:09:47,283 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:47,315 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:47,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:47,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:47,774 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:47,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:09:47,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:09:47,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:09:47,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:47,775 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-03 09:09:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:47,834 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-03 09:09:47,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:09:47,835 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-03 09:09:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:47,836 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:09:47,836 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:09:47,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.5s impTime 17 [2018-10-03 09:09:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:09:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:09:47,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:09:47,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-03 09:09:47,841 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-03 09:09:47,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:47,841 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-03 09:09:47,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:09:47,842 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-03 09:09:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:09:47,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:47,844 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-03 09:09:47,844 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:47,844 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-03 09:09:47,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:47,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:47,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:47,845 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:47,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:48,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:48,884 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 [2018-10-03 09:09:48,892 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:48,961 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-03 09:09:48,961 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:48,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:49,075 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:49,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:09:49,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:09:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:09:49,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:49,076 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-03 09:09:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:49,117 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-03 09:09:49,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:09:49,117 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-03 09:09:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:49,118 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:09:49,118 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:09:49,119 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 18 [2018-10-03 09:09:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:09:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:09:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:09:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-03 09:09:49,124 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-03 09:09:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:49,125 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-03 09:09:49,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:09:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-03 09:09:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:09:49,126 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:49,126 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-03 09:09:49,126 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:49,126 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:49,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-03 09:09:49,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:49,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:49,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:49,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:49,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:49,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:49,421 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 [2018-10-03 09:09:49,428 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:49,465 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:09:49,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:49,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:50,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:50,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:09:50,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:09:50,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:09:50,044 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:50,046 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-03 09:09:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:50,129 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-03 09:09:50,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:09:50,129 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-03 09:09:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:50,130 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:09:50,130 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:09:50,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.1s impTime 19 [2018-10-03 09:09:50,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:09:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:09:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:09:50,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-03 09:09:50,135 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-03 09:09:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:50,135 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-03 09:09:50,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:09:50,136 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-03 09:09:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:09:50,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:50,136 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-03 09:09:50,136 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:50,137 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:50,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-03 09:09:50,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:50,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:50,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:50,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:50,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:51,049 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:51,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:51,050 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 [2018-10-03 09:09:51,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:51,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:51,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:51,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:09:51,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:09:51,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:09:51,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:51,304 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-03 09:09:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:51,384 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-03 09:09:51,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:09:51,385 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-03 09:09:51,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:51,387 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:09:51,387 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:09:51,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 20 [2018-10-03 09:09:51,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:09:51,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:09:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:09:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-03 09:09:51,392 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-03 09:09:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:51,393 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-03 09:09:51,393 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:09:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-03 09:09:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:09:51,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:51,394 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-03 09:09:51,394 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:51,394 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:51,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-03 09:09:51,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:51,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:51,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:51,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:51,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:52,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:52,157 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 [2018-10-03 09:09:52,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:52,214 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:52,215 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:52,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:52,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:52,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:09:52,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:09:52,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:09:52,422 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:52,422 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-03 09:09:52,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:52,507 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-03 09:09:52,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:09:52,507 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-03 09:09:52,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:52,508 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:09:52,508 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:09:52,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 21 [2018-10-03 09:09:52,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:09:52,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:09:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:09:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-03 09:09:52,513 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-03 09:09:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:52,513 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-03 09:09:52,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:09:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-03 09:09:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:09:52,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:52,515 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-03 09:09:52,515 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:52,515 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:52,515 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-03 09:09:52,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:52,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:52,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:52,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:52,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:52,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:52,867 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 [2018-10-03 09:09:52,876 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:52,929 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-03 09:09:52,929 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:52,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:53,089 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:53,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:09:53,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:09:53,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:09:53,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:53,090 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-03 09:09:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:53,209 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-03 09:09:53,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:09:53,211 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-03 09:09:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:53,211 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:09:53,211 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:09:53,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 22 [2018-10-03 09:09:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:09:53,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:09:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:09:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-03 09:09:53,216 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-03 09:09:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-03 09:09:53,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:09:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-03 09:09:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:09:53,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:53,217 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-03 09:09:53,217 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:53,217 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-03 09:09:53,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:53,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:53,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:53,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:53,695 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:53,695 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 [2018-10-03 09:09:53,703 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:53,741 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:53,741 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:53,743 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:53,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:53,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:09:53,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:09:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:09:53,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:53,882 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-03 09:09:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:53,932 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-03 09:09:53,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:09:53,932 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-03 09:09:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:53,933 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:09:53,933 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:09:53,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 23 [2018-10-03 09:09:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:09:53,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:09:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:09:53,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-03 09:09:53,938 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-03 09:09:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:53,938 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-03 09:09:53,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:09:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-03 09:09:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:09:53,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:53,939 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-03 09:09:53,940 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:53,940 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:53,940 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-03 09:09:53,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:53,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:53,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:53,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:54,366 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:54,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:54,366 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 [2018-10-03 09:09:54,378 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:54,437 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-03 09:09:54,437 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:54,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:54,610 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:54,632 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:54,632 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:09:54,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:09:54,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:09:54,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:54,633 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-03 09:09:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:54,662 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-03 09:09:54,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:09:54,662 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-03 09:09:54,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:54,663 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:09:54,663 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:09:54,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 24 [2018-10-03 09:09:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:09:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:09:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:09:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-03 09:09:54,668 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-03 09:09:54,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:54,668 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-03 09:09:54,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:09:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-03 09:09:54,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:09:54,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:54,669 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-03 09:09:54,669 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:54,669 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:54,669 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-03 09:09:54,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:54,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:54,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:54,670 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:54,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:55,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:55,607 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 [2018-10-03 09:09:55,614 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:09:55,738 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:09:55,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:55,740 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:55,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:55,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:09:55,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:09:55,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:09:55,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:55,893 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-03 09:09:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:55,936 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-03 09:09:55,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:09:55,937 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-03 09:09:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:55,938 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:09:55,938 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:09:55,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 25 [2018-10-03 09:09:55,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:09:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:09:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:09:55,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-03 09:09:55,943 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-03 09:09:55,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:55,943 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-03 09:09:55,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:09:55,943 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-03 09:09:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:09:55,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:55,944 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-03 09:09:55,944 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:55,944 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:55,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-03 09:09:55,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:55,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:55,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:55,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:56,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:56,353 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 [2018-10-03 09:09:56,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:56,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:56,607 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:56,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:09:56,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:09:56,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:09:56,608 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:56,608 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-03 09:09:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:56,679 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-03 09:09:56,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:09:56,680 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-03 09:09:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:56,681 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:09:56,681 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:09:56,681 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 26 [2018-10-03 09:09:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:09:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:09:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:09:56,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-03 09:09:56,686 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-03 09:09:56,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:56,686 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-03 09:09:56,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:09:56,686 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-03 09:09:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:09:56,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:56,687 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-03 09:09:56,687 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:56,687 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-03 09:09:56,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:56,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:56,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:56,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:09:56,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:57,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:57,036 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 [2018-10-03 09:09:57,043 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:09:57,096 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:09:57,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:57,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:57,340 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:57,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:09:57,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:09:57,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:09:57,341 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:57,341 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-03 09:09:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:57,415 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-03 09:09:57,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:09:57,416 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-03 09:09:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:57,416 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:09:57,416 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:09:57,417 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 27 [2018-10-03 09:09:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:09:57,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:09:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:09:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-03 09:09:57,419 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-03 09:09:57,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:57,419 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-03 09:09:57,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:09:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-03 09:09:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:09:57,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:57,420 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-03 09:09:57,421 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:57,421 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-03 09:09:57,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:57,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:57,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:57,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:57,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:57,828 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:57,828 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:57,828 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 [2018-10-03 09:09:57,842 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:09:57,897 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-03 09:09:57,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:57,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:58,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:58,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:09:58,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:09:58,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:09:58,052 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:58,052 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-03 09:09:58,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:58,100 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-03 09:09:58,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:09:58,101 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-03 09:09:58,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:58,102 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:09:58,102 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:09:58,102 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 28 [2018-10-03 09:09:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:09:58,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:09:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:09:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-03 09:09:58,106 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-03 09:09:58,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:58,106 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-03 09:09:58,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:09:58,106 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-03 09:09:58,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:09:58,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:58,107 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-03 09:09:58,107 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:58,107 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:58,107 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-03 09:09:58,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:58,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:58,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:58,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:58,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:58,705 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:58,705 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 [2018-10-03 09:09:58,713 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:09:58,771 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:09:58,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:58,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:58,957 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:58,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:09:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:09:58,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:09:58,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:58,958 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-03 09:09:59,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:59,121 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-03 09:09:59,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:09:59,122 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-03 09:09:59,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:59,122 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:09:59,122 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:09:59,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 29 [2018-10-03 09:09:59,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:09:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:09:59,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:09:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-03 09:09:59,126 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-03 09:09:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:59,127 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-03 09:09:59,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:09:59,127 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-03 09:09:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:09:59,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:59,128 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-03 09:09:59,128 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:59,128 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:59,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-03 09:09:59,129 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:59,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:59,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:59,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:59,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:09:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:59,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:09:59,513 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 [2018-10-03 09:09:59,522 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:09:59,598 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-03 09:09:59,598 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:09:59,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:09:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:09:59,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:09:59,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:09:59,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:09:59,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:09:59,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:09:59,737 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-03 09:09:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:09:59,784 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-03 09:09:59,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:09:59,785 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-03 09:09:59,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:09:59,786 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:09:59,786 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:09:59,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 30 [2018-10-03 09:09:59,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:09:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:09:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:09:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-03 09:09:59,790 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-03 09:09:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:09:59,790 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-03 09:09:59,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:09:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-03 09:09:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:09:59,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:09:59,791 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-03 09:09:59,791 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:09:59,791 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:09:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-03 09:09:59,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:09:59,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:09:59,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:59,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:09:59,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:09:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:00,956 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:00,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:00,957 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 [2018-10-03 09:10:00,965 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:01,030 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:10:01,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:01,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:01,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:01,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:10:01,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:10:01,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:10:01,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:01,166 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-03 09:10:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:01,206 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-03 09:10:01,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:10:01,206 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-03 09:10:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:01,207 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:10:01,207 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:10:01,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 31 [2018-10-03 09:10:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:10:01,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:10:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:10:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-03 09:10:01,211 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-03 09:10:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:01,211 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-03 09:10:01,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:10:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-03 09:10:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:10:01,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:01,212 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-03 09:10:01,212 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:01,212 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:01,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-03 09:10:01,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:01,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:01,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:01,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:01,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:01,697 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:01,697 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 [2018-10-03 09:10:01,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:01,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:02,010 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:02,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:02,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:10:02,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:10:02,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:10:02,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:02,031 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-03 09:10:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:02,075 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-03 09:10:02,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:10:02,075 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-03 09:10:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:02,076 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:10:02,076 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:10:02,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 32 [2018-10-03 09:10:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:10:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:10:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:10:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-03 09:10:02,080 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-03 09:10:02,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:02,080 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-03 09:10:02,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:10:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-03 09:10:02,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:10:02,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:02,081 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-03 09:10:02,081 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:02,081 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:02,081 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-03 09:10:02,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:02,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:02,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:02,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:02,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:03,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:03,184 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 [2018-10-03 09:10:03,192 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:03,248 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:03,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:03,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:03,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:03,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:10:03,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:10:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:10:03,402 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:03,402 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-03 09:10:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:03,467 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-03 09:10:03,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:10:03,468 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-03 09:10:03,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:03,469 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:10:03,469 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:10:03,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 33 [2018-10-03 09:10:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:10:03,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:10:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:10:03,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-03 09:10:03,472 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-03 09:10:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:03,473 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-03 09:10:03,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:10:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-03 09:10:03,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:10:03,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:03,473 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-03 09:10:03,474 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:03,474 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:03,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-03 09:10:03,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:03,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:03,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:03,475 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:03,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:03,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:03,976 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 [2018-10-03 09:10:03,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:04,053 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-03 09:10:04,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:04,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:04,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:04,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:10:04,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:10:04,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:10:04,197 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:04,197 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-03 09:10:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:04,256 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-03 09:10:04,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:10:04,257 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-03 09:10:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:04,258 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:10:04,258 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:10:04,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 34 [2018-10-03 09:10:04,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:10:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:10:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:10:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-03 09:10:04,262 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-03 09:10:04,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:04,262 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-03 09:10:04,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:10:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-03 09:10:04,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:10:04,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:04,263 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-03 09:10:04,263 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:04,263 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:04,264 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-03 09:10:04,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:04,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:04,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:04,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:04,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:05,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:05,029 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 [2018-10-03 09:10:05,049 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:05,103 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:05,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:05,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:05,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:05,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:10:05,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:10:05,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:10:05,281 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:05,281 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-03 09:10:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:05,432 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-03 09:10:05,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:10:05,432 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-03 09:10:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:05,433 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:10:05,433 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:10:05,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 35 [2018-10-03 09:10:05,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:10:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:10:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:10:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-03 09:10:05,441 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-03 09:10:05,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:05,441 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-03 09:10:05,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:10:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-03 09:10:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:10:05,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:05,442 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-03 09:10:05,442 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:05,442 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:05,442 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-03 09:10:05,442 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:05,442 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:05,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:05,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:05,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:06,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:06,002 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:06,002 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 [2018-10-03 09:10:06,010 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:06,083 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-03 09:10:06,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:06,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:06,781 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:06,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:10:06,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:10:06,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:10:06,782 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:06,782 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-03 09:10:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:06,897 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-03 09:10:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:10:06,898 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-03 09:10:06,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:06,899 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:10:06,899 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:10:06,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.4s impTime 36 [2018-10-03 09:10:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:10:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:10:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:10:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-03 09:10:06,902 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-03 09:10:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:06,903 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-03 09:10:06,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:10:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-03 09:10:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:10:06,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:06,904 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-03 09:10:06,904 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:06,904 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:06,904 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-03 09:10:06,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:06,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:06,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:06,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:06,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:07,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:07,805 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 [2018-10-03 09:10:07,812 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:07,893 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:10:07,893 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:07,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:08,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:08,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:10:08,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:10:08,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:10:08,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:08,059 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-03 09:10:08,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:08,125 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-03 09:10:08,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:10:08,126 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-03 09:10:08,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:08,127 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:10:08,127 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:10:08,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 37 [2018-10-03 09:10:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:10:08,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:10:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:10:08,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-03 09:10:08,131 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-03 09:10:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:08,131 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-03 09:10:08,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:10:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-03 09:10:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:10:08,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:08,132 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-03 09:10:08,133 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:08,133 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:08,133 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-03 09:10:08,133 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:08,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:08,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:08,134 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:08,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:09,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:09,703 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 [2018-10-03 09:10:09,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:09,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:09,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:09,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:10:09,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:10:09,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:10:09,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:09,961 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-03 09:10:10,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:10,089 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-03 09:10:10,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:10:10,092 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-03 09:10:10,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:10,092 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:10:10,093 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:10:10,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 38 [2018-10-03 09:10:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:10:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:10:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:10:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-03 09:10:10,096 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-03 09:10:10,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:10,097 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-03 09:10:10,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:10:10,097 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-03 09:10:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:10:10,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:10,098 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-03 09:10:10,098 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:10,098 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:10,098 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-03 09:10:10,098 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:10,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:10,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:10,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:10,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:11,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:11,006 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 [2018-10-03 09:10:11,014 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:11,081 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:11,081 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:11,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:11,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:11,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:10:11,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:10:11,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:10:11,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:11,281 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-03 09:10:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:11,425 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-03 09:10:11,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:10:11,425 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-03 09:10:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:11,426 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:10:11,427 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:10:11,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 39 [2018-10-03 09:10:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:10:11,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:10:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:10:11,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-03 09:10:11,430 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-03 09:10:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:11,431 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-03 09:10:11,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:10:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-03 09:10:11,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:10:11,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:11,432 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-03 09:10:11,432 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:11,432 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:11,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-03 09:10:11,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:11,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:11,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:11,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:11,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:12,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:12,112 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 [2018-10-03 09:10:12,119 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:12,205 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-03 09:10:12,205 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:12,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:12,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:12,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:10:12,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:10:12,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:10:12,377 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:12,378 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-03 09:10:12,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:12,475 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-03 09:10:12,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:10:12,476 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-03 09:10:12,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:12,477 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:10:12,477 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:10:12,477 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 40 [2018-10-03 09:10:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:10:12,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:10:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:10:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-03 09:10:12,480 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-03 09:10:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:12,480 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-03 09:10:12,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:10:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-03 09:10:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:10:12,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:12,481 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-03 09:10:12,481 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:12,481 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:12,481 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-03 09:10:12,481 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:12,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:12,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:12,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:12,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:13,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:13,546 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 [2018-10-03 09:10:13,554 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:13,620 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:13,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:13,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:13,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:13,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:10:13,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:10:13,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:10:13,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:13,811 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-03 09:10:13,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:13,969 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-03 09:10:13,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:10:13,969 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-03 09:10:13,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:13,971 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:10:13,971 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:10:13,971 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 41 [2018-10-03 09:10:13,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:10:13,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:10:13,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:10:13,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-03 09:10:13,974 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-03 09:10:13,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:13,974 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-03 09:10:13,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:10:13,975 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-03 09:10:13,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:10:13,975 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:13,975 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-03 09:10:13,975 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:13,976 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:13,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-03 09:10:13,976 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:13,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:13,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:13,977 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:13,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:14,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:14,884 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 [2018-10-03 09:10:14,893 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:14,994 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-03 09:10:14,994 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:14,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:15,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:15,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:10:15,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:10:15,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:10:15,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:15,236 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-03 09:10:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:15,329 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-03 09:10:15,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:10:15,329 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-03 09:10:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:15,330 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:10:15,330 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:10:15,330 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 42 [2018-10-03 09:10:15,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:10:15,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:10:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:10:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-03 09:10:15,333 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-03 09:10:15,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:15,333 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-03 09:10:15,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:10:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-03 09:10:15,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:10:15,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:15,334 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-03 09:10:15,334 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:15,334 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:15,334 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-03 09:10:15,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:15,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:15,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:15,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:15,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:16,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:16,156 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 [2018-10-03 09:10:16,164 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:16,258 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:10:16,258 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:16,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:16,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:16,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:10:16,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:10:16,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:10:16,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:16,451 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-03 09:10:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:16,522 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-03 09:10:16,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:10:16,523 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-03 09:10:16,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:16,524 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:10:16,524 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:10:16,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 43 [2018-10-03 09:10:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:10:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:10:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:10:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-03 09:10:16,528 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-03 09:10:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:16,528 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-03 09:10:16,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:10:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-03 09:10:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:10:16,529 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:16,529 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-03 09:10:16,529 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:16,529 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:16,529 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-03 09:10:16,530 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:16,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:16,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:16,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:16,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:17,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:17,588 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 [2018-10-03 09:10:17,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:17,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:17,995 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:17,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:10:17,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:10:17,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:10:17,996 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:17,996 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-03 09:10:18,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:18,090 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-03 09:10:18,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:10:18,091 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-03 09:10:18,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:18,092 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:10:18,092 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:10:18,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.7s impTime 44 [2018-10-03 09:10:18,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:10:18,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:10:18,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:10:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-03 09:10:18,094 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-03 09:10:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:18,095 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-03 09:10:18,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:10:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-03 09:10:18,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:10:18,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:18,095 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-03 09:10:18,095 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:18,095 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:18,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-03 09:10:18,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:18,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:18,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:18,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:18,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:19,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:19,263 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 [2018-10-03 09:10:19,271 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:19,346 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:19,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:19,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:19,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:19,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:10:19,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:10:19,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:10:19,725 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:19,725 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-03 09:10:19,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:19,972 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-03 09:10:19,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:10:19,973 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-03 09:10:19,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:19,974 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:10:19,974 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:10:19,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime 45 [2018-10-03 09:10:19,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:10:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:10:19,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:10:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-03 09:10:19,978 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-03 09:10:19,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:19,978 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-03 09:10:19,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:10:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-03 09:10:19,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:10:19,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:19,979 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-03 09:10:19,979 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:19,979 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:19,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-03 09:10:19,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:19,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:19,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:19,980 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:19,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:21,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:21,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:21,328 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:21,490 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-03 09:10:21,490 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:21,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:21,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:21,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:10:21,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:10:21,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:10:21,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:21,737 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-03 09:10:21,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:21,814 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-03 09:10:21,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:10:21,815 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-03 09:10:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:21,816 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:10:21,816 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:10:21,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.9s impTime 46 [2018-10-03 09:10:21,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:10:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:10:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:10:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-03 09:10:21,818 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-03 09:10:21,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:21,819 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-03 09:10:21,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:10:21,819 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-03 09:10:21,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:10:21,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:21,820 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-03 09:10:21,820 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:21,820 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:21,820 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-03 09:10:21,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:21,821 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:21,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:21,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:21,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:23,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:23,240 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 [2018-10-03 09:10:23,248 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:23,327 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:23,327 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:23,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:24,609 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:24,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:10:24,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:10:24,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:10:24,610 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:24,610 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-03 09:10:24,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:24,705 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-03 09:10:24,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:10:24,706 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-03 09:10:24,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:24,706 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:10:24,706 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:10:24,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 1.2s impTime 47 [2018-10-03 09:10:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:10:24,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:10:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:10:24,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-03 09:10:24,709 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-03 09:10:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:24,709 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-03 09:10:24,710 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:10:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-03 09:10:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:10:24,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:24,710 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-03 09:10:24,710 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:24,710 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:24,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-03 09:10:24,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:24,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:24,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:24,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:24,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:25,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:25,613 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 [2018-10-03 09:10:25,620 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:25,727 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-03 09:10:25,727 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:25,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:25,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:25,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:10:26,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:10:26,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:10:26,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:26,000 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-03 09:10:26,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:26,083 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-03 09:10:26,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:10:26,083 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-03 09:10:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:26,085 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:10:26,085 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:10:26,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.6s impTime 48 [2018-10-03 09:10:26,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:10:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:10:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:10:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-03 09:10:26,087 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-03 09:10:26,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:26,088 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-03 09:10:26,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:10:26,088 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-03 09:10:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:10:26,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:26,089 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-03 09:10:26,089 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:26,089 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:26,089 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-03 09:10:26,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:26,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:26,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:26,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:26,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:26,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:26,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:26,985 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 [2018-10-03 09:10:26,994 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:27,106 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:10:27,106 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:27,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:27,308 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:27,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:10:27,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:10:27,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:10:27,309 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:27,310 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-03 09:10:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:27,432 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-03 09:10:27,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:10:27,432 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-03 09:10:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:27,433 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:10:27,434 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:10:27,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 49 [2018-10-03 09:10:27,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:10:27,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:10:27,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:10:27,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-03 09:10:27,439 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-03 09:10:27,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:27,439 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-03 09:10:27,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:10:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-03 09:10:27,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:10:27,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:27,440 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-03 09:10:27,440 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:27,440 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:27,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-03 09:10:27,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:27,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:27,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:27,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:27,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:28,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:28,655 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 [2018-10-03 09:10:28,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:28,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:28,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:28,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:10:28,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:10:28,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:10:28,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:28,941 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-03 09:10:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:29,058 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-03 09:10:29,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:10:29,058 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-03 09:10:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:29,059 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:10:29,059 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:10:29,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 50 [2018-10-03 09:10:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:10:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:10:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:10:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-03 09:10:29,062 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-03 09:10:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:29,063 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-03 09:10:29,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:10:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-03 09:10:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:10:29,063 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:29,064 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-03 09:10:29,064 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:29,064 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:29,064 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-03 09:10:29,064 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:29,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:29,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:29,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:29,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:30,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:30,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:30,422 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:30,512 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:30,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:30,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:30,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:30,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:30,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:10:30,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:10:30,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:10:30,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:30,869 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-03 09:10:31,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:31,000 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-03 09:10:31,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:10:31,001 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-03 09:10:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:31,002 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:10:31,002 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:10:31,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 51 [2018-10-03 09:10:31,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:10:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:10:31,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:10:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-03 09:10:31,006 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-03 09:10:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:31,006 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-03 09:10:31,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:10:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-03 09:10:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:10:31,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:31,007 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-03 09:10:31,008 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:31,008 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-03 09:10:31,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:31,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:31,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:31,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:31,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:32,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:32,526 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 [2018-10-03 09:10:32,533 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:32,655 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-03 09:10:32,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:32,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:33,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:33,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:10:33,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:10:33,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:10:33,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:33,229 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-03 09:10:33,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:33,382 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-03 09:10:33,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:10:33,383 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-03 09:10:33,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:33,384 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:10:33,384 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:10:33,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.1s impTime 52 [2018-10-03 09:10:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:10:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:10:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:10:33,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-03 09:10:33,388 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-03 09:10:33,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:33,388 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-03 09:10:33,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:10:33,388 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-03 09:10:33,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:10:33,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:33,388 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-03 09:10:33,389 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:33,389 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:33,389 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-03 09:10:33,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:33,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:33,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:33,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:33,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:34,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:34,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:34,957 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 [2018-10-03 09:10:34,972 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:35,059 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:35,060 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:35,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:35,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:35,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:10:35,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:10:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:10:35,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:35,273 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-03 09:10:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:35,387 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-03 09:10:35,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:10:35,388 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-03 09:10:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:35,389 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:10:35,389 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:10:35,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 53 [2018-10-03 09:10:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:10:35,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:10:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:10:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-03 09:10:35,391 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-03 09:10:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:35,392 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-03 09:10:35,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:10:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-03 09:10:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:10:35,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:35,392 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-03 09:10:35,393 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:35,393 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-03 09:10:35,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:35,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:35,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:35,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:35,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:36,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:36,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:36,906 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 [2018-10-03 09:10:36,921 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:37,100 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-03 09:10:37,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:37,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:37,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:37,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:10:37,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:10:37,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:10:37,426 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:37,426 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-03 09:10:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:37,515 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-03 09:10:37,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:10:37,516 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-03 09:10:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:37,517 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:10:37,517 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:10:37,517 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.2s impTime 54 [2018-10-03 09:10:37,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:10:37,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:10:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:10:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-03 09:10:37,520 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-03 09:10:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:37,520 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-03 09:10:37,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:10:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-03 09:10:37,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:10:37,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:37,521 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-03 09:10:37,521 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:37,521 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:37,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-03 09:10:37,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:37,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:37,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:37,522 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:37,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:39,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:39,103 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 [2018-10-03 09:10:39,109 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:39,246 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:10:39,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:39,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:39,612 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:39,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:10:39,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:10:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:10:39,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:39,613 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-03 09:10:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:39,783 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-03 09:10:39,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:10:39,784 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-03 09:10:39,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:39,785 INFO L225 Difference]: With dead ends: 117 [2018-10-03 09:10:39,785 INFO L226 Difference]: Without dead ends: 115 [2018-10-03 09:10:39,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 55 [2018-10-03 09:10:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-03 09:10:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-03 09:10:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-03 09:10:39,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-03 09:10:39,789 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-03 09:10:39,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:39,790 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-03 09:10:39,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:10:39,790 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-03 09:10:39,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-03 09:10:39,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:39,791 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-03 09:10:39,791 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:39,791 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:39,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-03 09:10:39,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:39,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:39,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:39,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:39,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:40,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:40,902 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 [2018-10-03 09:10:40,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:41,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:41,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:41,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:10:41,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:10:41,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:10:41,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:41,639 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-03 09:10:42,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:42,201 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-03 09:10:42,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:10:42,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-03 09:10:42,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:42,202 INFO L225 Difference]: With dead ends: 119 [2018-10-03 09:10:42,202 INFO L226 Difference]: Without dead ends: 117 [2018-10-03 09:10:42,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 0.9s impTime 56 [2018-10-03 09:10:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-03 09:10:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-03 09:10:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-03 09:10:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-03 09:10:42,206 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-03 09:10:42,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:42,207 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-03 09:10:42,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:10:42,207 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-03 09:10:42,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-03 09:10:42,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:42,208 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-03 09:10:42,208 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:42,208 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:42,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-03 09:10:42,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:42,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:42,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:42,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:42,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:43,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:43,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:43,687 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 [2018-10-03 09:10:43,695 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:43,793 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:43,793 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:43,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:45,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:45,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:45,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:10:45,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:10:45,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:10:45,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:45,165 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-03 09:10:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:45,281 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-03 09:10:45,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:10:45,282 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-03 09:10:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:45,283 INFO L225 Difference]: With dead ends: 121 [2018-10-03 09:10:45,283 INFO L226 Difference]: Without dead ends: 119 [2018-10-03 09:10:45,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 1.2s impTime 57 [2018-10-03 09:10:45,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-03 09:10:45,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-03 09:10:45,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-03 09:10:45,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-03 09:10:45,286 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-03 09:10:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:45,286 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-03 09:10:45,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:10:45,286 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-03 09:10:45,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-03 09:10:45,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:45,287 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-03 09:10:45,287 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:45,288 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:45,288 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-03 09:10:45,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:45,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:45,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:45,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:45,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:46,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:46,633 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 [2018-10-03 09:10:46,640 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:10:46,783 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-03 09:10:46,784 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:46,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:47,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:47,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:10:47,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:10:47,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:10:47,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:47,230 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-03 09:10:47,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:47,330 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-03 09:10:47,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:10:47,330 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-03 09:10:47,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:47,331 INFO L225 Difference]: With dead ends: 123 [2018-10-03 09:10:47,331 INFO L226 Difference]: Without dead ends: 121 [2018-10-03 09:10:47,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 58 [2018-10-03 09:10:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-03 09:10:47,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-03 09:10:47,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-03 09:10:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-03 09:10:47,335 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-03 09:10:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:47,335 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-03 09:10:47,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:10:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-03 09:10:47,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-03 09:10:47,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:47,336 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-03 09:10:47,336 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:47,336 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:47,336 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-03 09:10:47,336 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:47,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:47,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:47,337 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:47,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:49,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:49,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:10:49,131 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:10:49,227 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:10:49,227 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:49,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:49,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:49,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:10:49,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:10:49,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:10:49,478 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:49,478 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-03 09:10:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:49,610 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-03 09:10:49,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:10:49,610 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-03 09:10:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:49,611 INFO L225 Difference]: With dead ends: 125 [2018-10-03 09:10:49,611 INFO L226 Difference]: Without dead ends: 123 [2018-10-03 09:10:49,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 59 [2018-10-03 09:10:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-03 09:10:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-03 09:10:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-03 09:10:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-03 09:10:49,614 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-03 09:10:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:49,615 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-03 09:10:49,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:10:49,615 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-03 09:10:49,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-03 09:10:49,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:49,616 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-03 09:10:49,616 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:49,616 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:49,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-03 09:10:49,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:49,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:49,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:49,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:49,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:51,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:51,273 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 [2018-10-03 09:10:51,280 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:10:51,421 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-03 09:10:51,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:51,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:51,825 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:51,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:10:51,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:10:51,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:10:51,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:51,826 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-03 09:10:51,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:51,965 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-03 09:10:51,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:10:51,966 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-03 09:10:51,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:51,967 INFO L225 Difference]: With dead ends: 127 [2018-10-03 09:10:51,967 INFO L226 Difference]: Without dead ends: 125 [2018-10-03 09:10:51,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 60 [2018-10-03 09:10:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-03 09:10:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-03 09:10:51,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-03 09:10:51,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-03 09:10:51,970 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-03 09:10:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:51,970 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-03 09:10:51,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:10:51,971 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-03 09:10:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-03 09:10:51,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:51,971 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-03 09:10:51,972 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:51,972 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:51,972 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-03 09:10:51,972 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:51,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:51,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:51,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:51,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:54,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:54,212 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 [2018-10-03 09:10:54,220 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:10:54,374 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-03 09:10:54,375 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:54,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:54,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:54,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:54,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:10:54,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:10:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:10:54,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:54,621 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-03 09:10:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:54,796 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-03 09:10:54,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:10:54,797 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-03 09:10:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:54,797 INFO L225 Difference]: With dead ends: 129 [2018-10-03 09:10:54,797 INFO L226 Difference]: Without dead ends: 127 [2018-10-03 09:10:54,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 61 [2018-10-03 09:10:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-03 09:10:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-03 09:10:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-03 09:10:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-03 09:10:54,802 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-03 09:10:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:54,802 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-03 09:10:54,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:10:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-03 09:10:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-03 09:10:54,803 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:54,803 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-03 09:10:54,803 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:54,803 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:54,803 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-03 09:10:54,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:54,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:54,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:54,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:54,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:56,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:56,383 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 [2018-10-03 09:10:56,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:56,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:56,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:56,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:10:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:10:56,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:10:56,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:56,733 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-03 09:10:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:56,850 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-03 09:10:56,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:10:56,851 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-03 09:10:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:56,851 INFO L225 Difference]: With dead ends: 131 [2018-10-03 09:10:56,852 INFO L226 Difference]: Without dead ends: 129 [2018-10-03 09:10:56,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 62 [2018-10-03 09:10:56,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-03 09:10:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-03 09:10:56,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-03 09:10:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-03 09:10:56,855 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-03 09:10:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:56,855 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-03 09:10:56,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:10:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-03 09:10:56,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-03 09:10:56,856 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:56,856 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-03 09:10:56,857 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:56,857 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:56,857 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-03 09:10:56,857 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:56,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:56,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:56,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:10:56,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:10:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:58,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:10:58,017 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 [2018-10-03 09:10:58,026 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:10:58,131 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:10:58,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:10:58,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:10:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:10:58,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:10:58,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:10:58,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:10:58,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:10:58,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:10:58,436 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-03 09:10:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:10:58,574 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-03 09:10:58,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:10:58,575 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-03 09:10:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:10:58,575 INFO L225 Difference]: With dead ends: 133 [2018-10-03 09:10:58,575 INFO L226 Difference]: Without dead ends: 131 [2018-10-03 09:10:58,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 63 [2018-10-03 09:10:58,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-03 09:10:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-03 09:10:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-03 09:10:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-03 09:10:58,580 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-03 09:10:58,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:10:58,580 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-03 09:10:58,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:10:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-03 09:10:58,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-03 09:10:58,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:10:58,581 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-03 09:10:58,582 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:10:58,582 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:10:58,582 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-03 09:10:58,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:10:58,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:10:58,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:58,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:10:58,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:10:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:00,158 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:00,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:00,159 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 [2018-10-03 09:11:00,171 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:00,334 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-03 09:11:00,334 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:00,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:00,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:00,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:11:00,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:11:00,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:11:00,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:00,589 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-03 09:11:00,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:00,725 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-03 09:11:00,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:11:00,726 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-03 09:11:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:00,726 INFO L225 Difference]: With dead ends: 135 [2018-10-03 09:11:00,727 INFO L226 Difference]: Without dead ends: 133 [2018-10-03 09:11:00,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 64 [2018-10-03 09:11:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-03 09:11:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-03 09:11:00,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-03 09:11:00,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-03 09:11:00,730 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-03 09:11:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:00,731 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-03 09:11:00,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:11:00,731 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-03 09:11:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-03 09:11:00,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:00,732 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-03 09:11:00,732 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:00,732 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:00,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-03 09:11:00,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:00,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:00,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:02,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:02,743 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:11:02,754 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:02,877 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:02,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:02,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:03,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:03,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:11:03,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:11:03,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:11:03,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:03,132 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-03 09:11:03,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:03,285 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-03 09:11:03,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:11:03,286 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-03 09:11:03,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:03,287 INFO L225 Difference]: With dead ends: 137 [2018-10-03 09:11:03,287 INFO L226 Difference]: Without dead ends: 135 [2018-10-03 09:11:03,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 65 [2018-10-03 09:11:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-03 09:11:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-03 09:11:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-03 09:11:03,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-03 09:11:03,290 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-03 09:11:03,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:03,291 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-03 09:11:03,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:11:03,291 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-03 09:11:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-03 09:11:03,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:03,292 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-03 09:11:03,292 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:03,292 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:03,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-03 09:11:03,292 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:03,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:03,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:03,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:03,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:05,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:05,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:05,139 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 [2018-10-03 09:11:05,146 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:05,304 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-03 09:11:05,304 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:05,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:05,608 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:05,608 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:11:05,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:11:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:11:05,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:05,609 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-03 09:11:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:05,770 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-03 09:11:05,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:11:05,771 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-03 09:11:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:05,771 INFO L225 Difference]: With dead ends: 139 [2018-10-03 09:11:05,771 INFO L226 Difference]: Without dead ends: 137 [2018-10-03 09:11:05,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 66 [2018-10-03 09:11:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-03 09:11:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-03 09:11:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-03 09:11:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-03 09:11:05,775 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-03 09:11:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:05,775 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-03 09:11:05,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:11:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-03 09:11:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-03 09:11:05,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:05,776 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-03 09:11:05,776 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:05,776 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:05,776 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-03 09:11:05,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:05,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:05,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:05,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:05,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:07,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:07,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:07,064 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:07,070 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:07,235 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-03 09:11:07,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:07,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:07,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:07,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:07,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:11:07,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:11:07,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:11:07,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:07,550 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-03 09:11:07,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:07,682 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-03 09:11:07,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:11:07,683 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-03 09:11:07,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:07,683 INFO L225 Difference]: With dead ends: 141 [2018-10-03 09:11:07,683 INFO L226 Difference]: Without dead ends: 139 [2018-10-03 09:11:07,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 67 [2018-10-03 09:11:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-03 09:11:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-03 09:11:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-03 09:11:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-03 09:11:07,686 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-03 09:11:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:07,686 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-03 09:11:07,686 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:11:07,686 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-03 09:11:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-03 09:11:07,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:07,687 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-03 09:11:07,687 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:07,687 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-03 09:11:07,687 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:07,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:07,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:07,688 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:07,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:09,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:09,964 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 [2018-10-03 09:11:09,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:10,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:10,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:10,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:11:10,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:11:10,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:11:10,598 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:10,599 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-03 09:11:10,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:10,784 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-03 09:11:10,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:11:10,785 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-03 09:11:10,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:10,785 INFO L225 Difference]: With dead ends: 143 [2018-10-03 09:11:10,785 INFO L226 Difference]: Without dead ends: 141 [2018-10-03 09:11:10,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 68 [2018-10-03 09:11:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-03 09:11:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-03 09:11:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-03 09:11:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-03 09:11:10,790 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-03 09:11:10,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:10,790 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-03 09:11:10,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:11:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-03 09:11:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-03 09:11:10,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:10,791 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-03 09:11:10,791 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:10,791 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:10,791 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-03 09:11:10,791 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:10,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:10,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:10,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:10,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:10,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:12,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:12,873 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 [2018-10-03 09:11:12,880 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:12,993 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:12,993 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:12,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:13,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:13,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:11:13,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:11:13,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:11:13,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:13,265 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-03 09:11:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:13,456 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-03 09:11:13,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:11:13,457 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-03 09:11:13,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:13,457 INFO L225 Difference]: With dead ends: 145 [2018-10-03 09:11:13,457 INFO L226 Difference]: Without dead ends: 143 [2018-10-03 09:11:13,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 69 [2018-10-03 09:11:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-03 09:11:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-03 09:11:13,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-03 09:11:13,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-03 09:11:13,462 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-03 09:11:13,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:13,462 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-03 09:11:13,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:11:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-03 09:11:13,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-03 09:11:13,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:13,463 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-03 09:11:13,463 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:13,463 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:13,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-03 09:11:13,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:13,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:13,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:13,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:13,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:15,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:15,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:15,995 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:16,174 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-03 09:11:16,174 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:16,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:16,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:16,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:11:16,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:11:16,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:11:16,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:16,431 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-03 09:11:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:16,638 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-03 09:11:16,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:11:16,638 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-03 09:11:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:16,639 INFO L225 Difference]: With dead ends: 147 [2018-10-03 09:11:16,639 INFO L226 Difference]: Without dead ends: 145 [2018-10-03 09:11:16,640 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 70 [2018-10-03 09:11:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-03 09:11:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-03 09:11:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-03 09:11:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-03 09:11:16,643 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-03 09:11:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:16,643 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-03 09:11:16,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:11:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-03 09:11:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-03 09:11:16,643 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:16,644 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-03 09:11:16,644 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:16,644 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-03 09:11:16,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:16,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:16,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:16,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:16,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:18,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:18,922 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 [2018-10-03 09:11:18,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:19,040 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:19,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:19,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:19,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:19,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:11:19,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:11:19,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:11:19,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:19,531 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-03 09:11:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:19,729 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-03 09:11:19,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:11:19,729 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-03 09:11:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:19,730 INFO L225 Difference]: With dead ends: 149 [2018-10-03 09:11:19,730 INFO L226 Difference]: Without dead ends: 147 [2018-10-03 09:11:19,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 71 [2018-10-03 09:11:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-03 09:11:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-03 09:11:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-03 09:11:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-03 09:11:19,734 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-03 09:11:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:19,734 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-03 09:11:19,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:11:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-03 09:11:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-03 09:11:19,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:19,735 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-03 09:11:19,735 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:19,735 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-03 09:11:19,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:19,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:19,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:19,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:19,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:21,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:21,758 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 [2018-10-03 09:11:21,765 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:21,963 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-03 09:11:21,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:21,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:22,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:22,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:11:22,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:11:22,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:11:22,268 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:22,268 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-03 09:11:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:22,464 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-03 09:11:22,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:11:22,465 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-03 09:11:22,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:22,466 INFO L225 Difference]: With dead ends: 151 [2018-10-03 09:11:22,466 INFO L226 Difference]: Without dead ends: 149 [2018-10-03 09:11:22,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.7s impTime 72 [2018-10-03 09:11:22,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-03 09:11:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-03 09:11:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-03 09:11:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-03 09:11:22,470 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-03 09:11:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:22,470 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-03 09:11:22,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:11:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-03 09:11:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-03 09:11:22,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:22,471 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-03 09:11:22,471 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:22,471 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:22,471 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-03 09:11:22,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:22,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:22,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:22,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:22,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:23,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:23,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:23,945 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 [2018-10-03 09:11:23,953 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:24,150 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-03 09:11:24,151 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:24,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:24,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:24,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:11:24,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:11:24,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:11:24,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:24,702 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-03 09:11:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:24,852 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-03 09:11:24,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:11:24,852 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-03 09:11:24,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:24,853 INFO L225 Difference]: With dead ends: 153 [2018-10-03 09:11:24,853 INFO L226 Difference]: Without dead ends: 151 [2018-10-03 09:11:24,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 73 [2018-10-03 09:11:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-03 09:11:24,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-03 09:11:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-03 09:11:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-03 09:11:24,857 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-03 09:11:24,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:24,857 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-03 09:11:24,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:11:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-03 09:11:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-03 09:11:24,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:24,859 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-03 09:11:24,859 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:24,859 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:24,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-03 09:11:24,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:24,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:24,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:24,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:24,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:27,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:27,509 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 [2018-10-03 09:11:27,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:27,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:27,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:27,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:11:27,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:11:27,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:11:27,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:27,939 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-03 09:11:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:28,178 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-03 09:11:28,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:11:28,179 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-03 09:11:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:28,180 INFO L225 Difference]: With dead ends: 155 [2018-10-03 09:11:28,180 INFO L226 Difference]: Without dead ends: 153 [2018-10-03 09:11:28,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 74 [2018-10-03 09:11:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-03 09:11:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-03 09:11:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-03 09:11:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-03 09:11:28,183 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-03 09:11:28,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:28,184 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-03 09:11:28,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:11:28,184 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-03 09:11:28,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-03 09:11:28,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:28,184 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-03 09:11:28,185 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:28,185 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:28,185 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-03 09:11:28,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:28,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:28,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:28,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:28,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:30,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:30,080 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 [2018-10-03 09:11:30,087 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:30,206 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:30,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:30,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:30,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:30,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:11:30,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:11:30,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:11:30,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:30,518 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-03 09:11:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:30,674 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-03 09:11:30,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:11:30,674 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-03 09:11:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:30,675 INFO L225 Difference]: With dead ends: 157 [2018-10-03 09:11:30,675 INFO L226 Difference]: Without dead ends: 155 [2018-10-03 09:11:30,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 75 [2018-10-03 09:11:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-03 09:11:30,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-03 09:11:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-03 09:11:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-03 09:11:30,678 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-03 09:11:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:30,678 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-03 09:11:30,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:11:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-03 09:11:30,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-03 09:11:30,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:30,679 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-03 09:11:30,679 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:30,679 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:30,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-03 09:11:30,679 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:30,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:30,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:30,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:30,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:32,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:32,916 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 [2018-10-03 09:11:32,924 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:33,131 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-03 09:11:33,131 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:33,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:33,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:33,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:11:33,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:11:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:11:33,427 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:33,427 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-03 09:11:33,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:33,631 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-03 09:11:33,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:11:33,632 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-03 09:11:33,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:33,633 INFO L225 Difference]: With dead ends: 159 [2018-10-03 09:11:33,633 INFO L226 Difference]: Without dead ends: 157 [2018-10-03 09:11:33,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 76 [2018-10-03 09:11:33,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-03 09:11:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-03 09:11:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-03 09:11:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-03 09:11:33,636 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-03 09:11:33,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:33,636 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-03 09:11:33,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:11:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-03 09:11:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-03 09:11:33,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:33,637 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-03 09:11:33,637 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:33,637 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:33,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-03 09:11:33,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:33,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:33,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:33,638 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:33,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:36,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:36,320 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 [2018-10-03 09:11:36,327 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:36,464 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:36,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:36,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:36,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:36,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:11:36,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:11:36,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:11:36,771 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:36,771 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-03 09:11:37,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:37,403 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-03 09:11:37,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:11:37,403 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-03 09:11:37,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:37,404 INFO L225 Difference]: With dead ends: 161 [2018-10-03 09:11:37,405 INFO L226 Difference]: Without dead ends: 159 [2018-10-03 09:11:37,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 77 [2018-10-03 09:11:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-03 09:11:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-03 09:11:37,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-03 09:11:37,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-03 09:11:37,409 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-03 09:11:37,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:37,409 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-03 09:11:37,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:11:37,409 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-03 09:11:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-03 09:11:37,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:37,411 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-03 09:11:37,411 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:37,411 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-03 09:11:37,411 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:37,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:37,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:37,412 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:37,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:40,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:40,097 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 [2018-10-03 09:11:40,104 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:40,307 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-03 09:11:40,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:40,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:40,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:40,620 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:40,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:11:40,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:11:40,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:11:40,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:40,622 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-03 09:11:40,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:40,896 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-03 09:11:40,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:11:40,896 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-03 09:11:40,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:40,897 INFO L225 Difference]: With dead ends: 163 [2018-10-03 09:11:40,897 INFO L226 Difference]: Without dead ends: 161 [2018-10-03 09:11:40,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 78 [2018-10-03 09:11:40,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-03 09:11:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-03 09:11:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-03 09:11:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-03 09:11:40,901 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-03 09:11:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:40,902 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-03 09:11:40,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:11:40,902 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-03 09:11:40,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-03 09:11:40,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:40,903 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-03 09:11:40,903 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:40,903 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:40,903 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-03 09:11:40,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:40,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:40,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:40,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:40,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:43,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:43,015 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 [2018-10-03 09:11:43,023 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:11:43,267 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-03 09:11:43,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:43,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:43,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:43,556 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:11:43,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:11:43,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:11:43,558 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:43,558 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-03 09:11:43,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:43,741 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-03 09:11:43,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:11:43,741 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-03 09:11:43,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:43,743 INFO L225 Difference]: With dead ends: 165 [2018-10-03 09:11:43,743 INFO L226 Difference]: Without dead ends: 163 [2018-10-03 09:11:43,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 79 [2018-10-03 09:11:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-03 09:11:43,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-03 09:11:43,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-03 09:11:43,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-03 09:11:43,748 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-03 09:11:43,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:43,748 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-03 09:11:43,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:11:43,748 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-03 09:11:43,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-03 09:11:43,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:43,749 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-03 09:11:43,750 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:43,750 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:43,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-03 09:11:43,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:43,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:43,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:43,751 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:43,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:45,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:45,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:45,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:46,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:46,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:46,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:11:46,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:11:46,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:11:46,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:46,370 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-03 09:11:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:46,579 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-03 09:11:46,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:11:46,579 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-03 09:11:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:46,580 INFO L225 Difference]: With dead ends: 167 [2018-10-03 09:11:46,580 INFO L226 Difference]: Without dead ends: 165 [2018-10-03 09:11:46,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.8s impTime 80 [2018-10-03 09:11:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-03 09:11:46,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-03 09:11:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-03 09:11:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-03 09:11:46,583 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-03 09:11:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:46,583 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-03 09:11:46,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:11:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-03 09:11:46,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-03 09:11:46,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:46,584 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-03 09:11:46,585 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:46,585 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:46,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-03 09:11:46,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:46,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:46,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:46,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:11:46,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:49,376 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:49,376 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 [2018-10-03 09:11:49,384 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:11:49,516 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:11:49,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:49,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:49,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:49,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:11:49,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:11:49,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:11:49,870 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:49,870 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-03 09:11:50,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:50,208 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-03 09:11:50,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:11:50,208 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-03 09:11:50,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:50,209 INFO L225 Difference]: With dead ends: 169 [2018-10-03 09:11:50,209 INFO L226 Difference]: Without dead ends: 167 [2018-10-03 09:11:50,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.4s impTime 81 [2018-10-03 09:11:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-03 09:11:50,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-03 09:11:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-03 09:11:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-03 09:11:50,213 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-03 09:11:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:50,213 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-03 09:11:50,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:11:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-03 09:11:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-03 09:11:50,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:50,214 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-03 09:11:50,214 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:50,214 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:50,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-03 09:11:50,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:50,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:50,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:50,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:50,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:52,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:52,424 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 [2018-10-03 09:11:52,431 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:11:52,661 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-03 09:11:52,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:52,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:53,078 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:53,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:11:53,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:11:53,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:11:53,079 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:53,080 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-03 09:11:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:53,318 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-03 09:11:53,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:11:53,319 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-03 09:11:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:53,320 INFO L225 Difference]: With dead ends: 171 [2018-10-03 09:11:53,320 INFO L226 Difference]: Without dead ends: 169 [2018-10-03 09:11:53,320 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 82 [2018-10-03 09:11:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-03 09:11:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-03 09:11:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-03 09:11:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-03 09:11:53,323 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-03 09:11:53,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:53,323 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-03 09:11:53,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:11:53,323 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-03 09:11:53,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-03 09:11:53,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:53,324 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-03 09:11:53,324 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:53,324 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:53,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-03 09:11:53,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:53,325 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:53,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:53,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:53,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:55,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:55,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:55,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:11:55,588 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:11:55,720 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:11:55,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:55,724 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:56,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:56,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:11:56,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:11:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:11:56,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:56,028 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-03 09:11:56,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:56,207 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-03 09:11:56,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:11:56,208 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-03 09:11:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:56,209 INFO L225 Difference]: With dead ends: 173 [2018-10-03 09:11:56,209 INFO L226 Difference]: Without dead ends: 171 [2018-10-03 09:11:56,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 83 [2018-10-03 09:11:56,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-03 09:11:56,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-03 09:11:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-03 09:11:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-03 09:11:56,212 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-03 09:11:56,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:56,212 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-03 09:11:56,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:11:56,212 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-03 09:11:56,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-03 09:11:56,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:56,213 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-03 09:11:56,213 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:56,213 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:56,214 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-03 09:11:56,214 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:56,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:56,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:56,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:56,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:11:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:58,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:11:58,536 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 [2018-10-03 09:11:58,542 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:11:58,766 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-03 09:11:58,766 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:11:58,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:11:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:11:59,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:11:59,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:11:59,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:11:59,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:11:59,085 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:11:59,085 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-03 09:11:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:11:59,317 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-03 09:11:59,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:11:59,318 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-03 09:11:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:11:59,318 INFO L225 Difference]: With dead ends: 175 [2018-10-03 09:11:59,318 INFO L226 Difference]: Without dead ends: 173 [2018-10-03 09:11:59,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 84 [2018-10-03 09:11:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-03 09:11:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-03 09:11:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-03 09:11:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-03 09:11:59,321 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-03 09:11:59,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:11:59,322 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-03 09:11:59,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:11:59,322 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-03 09:11:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-03 09:11:59,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:11:59,323 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-03 09:11:59,323 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:11:59,323 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:11:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-03 09:11:59,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:11:59,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:11:59,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:59,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:11:59,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:11:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:00,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:00,934 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) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:12:00,944 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:12:01,173 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-03 09:12:01,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:01,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:01,488 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:01,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:12:01,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:12:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:12:01,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:01,490 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-03 09:12:01,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:01,890 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-03 09:12:01,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:12:01,891 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-03 09:12:01,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:01,892 INFO L225 Difference]: With dead ends: 177 [2018-10-03 09:12:01,892 INFO L226 Difference]: Without dead ends: 175 [2018-10-03 09:12:01,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 85 [2018-10-03 09:12:01,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-03 09:12:01,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-03 09:12:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-03 09:12:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-03 09:12:01,896 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-03 09:12:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:01,896 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-03 09:12:01,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:12:01,897 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-03 09:12:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-03 09:12:01,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:01,898 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-03 09:12:01,898 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:01,898 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:01,898 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-03 09:12:01,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:01,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:01,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:01,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:01,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:03,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:03,100 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 [2018-10-03 09:12:03,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:03,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:03,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:03,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:12:03,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:12:03,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:12:03,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:03,591 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-03 09:12:03,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:03,790 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-03 09:12:03,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:12:03,790 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-03 09:12:03,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:03,791 INFO L225 Difference]: With dead ends: 179 [2018-10-03 09:12:03,791 INFO L226 Difference]: Without dead ends: 177 [2018-10-03 09:12:03,791 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 86 [2018-10-03 09:12:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-03 09:12:03,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-03 09:12:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-03 09:12:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-03 09:12:03,795 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-03 09:12:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:03,795 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-03 09:12:03,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:12:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-03 09:12:03,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-03 09:12:03,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:03,796 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-03 09:12:03,796 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:03,797 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:03,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-03 09:12:03,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:03,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:03,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:03,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:03,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:05,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:05,631 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 [2018-10-03 09:12:05,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:12:05,783 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:12:05,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:05,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:06,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:06,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:12:06,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:12:06,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:12:06,126 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:06,126 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-03 09:12:06,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:06,426 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-03 09:12:06,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:12:06,427 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-03 09:12:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:06,428 INFO L225 Difference]: With dead ends: 181 [2018-10-03 09:12:06,428 INFO L226 Difference]: Without dead ends: 179 [2018-10-03 09:12:06,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 87 [2018-10-03 09:12:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-03 09:12:06,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-03 09:12:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-03 09:12:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-03 09:12:06,431 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-03 09:12:06,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:06,431 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-03 09:12:06,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:12:06,431 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-03 09:12:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-03 09:12:06,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:06,432 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-03 09:12:06,432 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:06,432 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:06,432 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-03 09:12:06,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:06,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:06,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:06,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:06,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:08,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:08,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:08,291 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 [2018-10-03 09:12:08,299 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:12:08,564 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-03 09:12:08,564 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:08,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:08,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:08,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:08,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:12:08,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:12:08,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:12:08,915 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:08,915 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-03 09:12:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:09,203 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-03 09:12:09,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:12:09,203 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-03 09:12:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:09,204 INFO L225 Difference]: With dead ends: 183 [2018-10-03 09:12:09,204 INFO L226 Difference]: Without dead ends: 181 [2018-10-03 09:12:09,204 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 88 [2018-10-03 09:12:09,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-03 09:12:09,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-03 09:12:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-03 09:12:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-03 09:12:09,208 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-03 09:12:09,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:09,208 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-03 09:12:09,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:12:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-03 09:12:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-03 09:12:09,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:09,209 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-03 09:12:09,209 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:09,210 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:09,210 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-03 09:12:09,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:09,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:09,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:09,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:11,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:11,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:11,153 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 [2018-10-03 09:12:11,160 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:12:11,305 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:12:11,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:11,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:11,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:11,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:12:11,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:12:11,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:12:11,655 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:11,655 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-03 09:12:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:11,944 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-03 09:12:11,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:12:11,945 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-03 09:12:11,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:11,945 INFO L225 Difference]: With dead ends: 185 [2018-10-03 09:12:11,946 INFO L226 Difference]: Without dead ends: 183 [2018-10-03 09:12:11,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 89 [2018-10-03 09:12:11,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-03 09:12:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-03 09:12:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-03 09:12:11,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-03 09:12:11,949 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-03 09:12:11,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:11,949 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-03 09:12:11,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:12:11,949 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-03 09:12:11,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-03 09:12:11,950 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:11,950 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-03 09:12:11,950 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:11,950 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-03 09:12:11,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:11,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:11,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:11,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:11,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:13,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:13,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:13,244 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:12:13,498 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-03 09:12:13,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:13,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:13,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:13,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:12:13,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:12:13,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:12:13,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:13,858 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-03 09:12:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:14,072 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-03 09:12:14,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:12:14,073 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-03 09:12:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:14,074 INFO L225 Difference]: With dead ends: 187 [2018-10-03 09:12:14,074 INFO L226 Difference]: Without dead ends: 185 [2018-10-03 09:12:14,074 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 90 [2018-10-03 09:12:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-03 09:12:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-03 09:12:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-03 09:12:14,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-03 09:12:14,077 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-03 09:12:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:14,078 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-03 09:12:14,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:12:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-03 09:12:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-03 09:12:14,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:14,078 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-03 09:12:14,079 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:14,079 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-03 09:12:14,079 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:14,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:14,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:14,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:14,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:15,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:15,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:15,660 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:12:15,918 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-03 09:12:15,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:15,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:16,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:16,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:12:16,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:12:16,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:12:16,260 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:16,260 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-03 09:12:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:16,512 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-03 09:12:16,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:12:16,512 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-03 09:12:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:16,513 INFO L225 Difference]: With dead ends: 189 [2018-10-03 09:12:16,513 INFO L226 Difference]: Without dead ends: 187 [2018-10-03 09:12:16,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 91 [2018-10-03 09:12:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-03 09:12:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-03 09:12:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-03 09:12:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-03 09:12:16,534 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-03 09:12:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:16,536 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-03 09:12:16,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:12:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-03 09:12:16,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-03 09:12:16,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:16,538 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-03 09:12:16,538 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:16,538 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:16,539 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-03 09:12:16,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:16,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:16,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:16,540 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:16,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:18,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:18,059 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 [2018-10-03 09:12:18,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:18,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:18,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:18,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:12:18,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:12:18,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:12:18,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:18,583 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-03 09:12:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:18,864 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-03 09:12:18,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:12:18,864 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-03 09:12:18,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:18,865 INFO L225 Difference]: With dead ends: 191 [2018-10-03 09:12:18,865 INFO L226 Difference]: Without dead ends: 189 [2018-10-03 09:12:18,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.1s impTime 92 [2018-10-03 09:12:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-03 09:12:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-03 09:12:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-03 09:12:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-03 09:12:18,869 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-03 09:12:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:18,870 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-03 09:12:18,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:12:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-03 09:12:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-03 09:12:18,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:18,871 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-03 09:12:18,871 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:18,871 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:18,871 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-03 09:12:18,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:18,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:18,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:20,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:20,342 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 [2018-10-03 09:12:20,350 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:12:20,503 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:12:20,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:20,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:21,030 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:21,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:12:21,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:12:21,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:12:21,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:21,031 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-03 09:12:21,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:21,276 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-03 09:12:21,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:12:21,277 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-03 09:12:21,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:21,277 INFO L225 Difference]: With dead ends: 193 [2018-10-03 09:12:21,278 INFO L226 Difference]: Without dead ends: 191 [2018-10-03 09:12:21,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 93 [2018-10-03 09:12:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-03 09:12:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-03 09:12:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-03 09:12:21,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-03 09:12:21,281 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-03 09:12:21,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:21,282 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-03 09:12:21,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:12:21,282 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-03 09:12:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-03 09:12:21,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:21,283 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-03 09:12:21,283 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:21,283 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-03 09:12:21,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:21,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:21,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:21,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:21,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:23,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:23,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:23,045 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 [2018-10-03 09:12:23,053 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:12:23,358 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-03 09:12:23,358 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:23,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:23,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:23,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:12:23,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:12:23,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:12:23,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:23,729 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-03 09:12:24,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:24,072 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-03 09:12:24,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:12:24,072 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-03 09:12:24,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:24,073 INFO L225 Difference]: With dead ends: 195 [2018-10-03 09:12:24,073 INFO L226 Difference]: Without dead ends: 193 [2018-10-03 09:12:24,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 94 [2018-10-03 09:12:24,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-03 09:12:24,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-03 09:12:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-03 09:12:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-03 09:12:24,078 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-03 09:12:24,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:24,078 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-03 09:12:24,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:12:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-03 09:12:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-03 09:12:24,079 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:24,079 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-03 09:12:24,079 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:24,080 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:24,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-03 09:12:24,080 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:24,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:24,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:24,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:24,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:26,550 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:26,550 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 [2018-10-03 09:12:26,558 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:12:26,712 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:12:26,712 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:26,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:27,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:27,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:12:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:12:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:12:27,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:27,131 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-03 09:12:27,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:27,455 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-03 09:12:27,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:12:27,456 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-03 09:12:27,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:27,457 INFO L225 Difference]: With dead ends: 197 [2018-10-03 09:12:27,457 INFO L226 Difference]: Without dead ends: 195 [2018-10-03 09:12:27,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 95 [2018-10-03 09:12:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-03 09:12:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-03 09:12:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-03 09:12:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-03 09:12:27,460 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-03 09:12:27,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:27,460 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-03 09:12:27,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:12:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-03 09:12:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-03 09:12:27,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:27,461 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-03 09:12:27,461 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:27,461 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:27,461 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-03 09:12:27,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:27,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:27,462 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:29,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:29,236 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 [2018-10-03 09:12:29,244 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:12:29,541 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-03 09:12:29,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:29,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:29,915 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:29,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:12:29,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:12:29,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:12:29,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:29,917 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-03 09:12:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:30,221 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-03 09:12:30,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:12:30,221 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-03 09:12:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:30,222 INFO L225 Difference]: With dead ends: 199 [2018-10-03 09:12:30,222 INFO L226 Difference]: Without dead ends: 197 [2018-10-03 09:12:30,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 96 [2018-10-03 09:12:30,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-03 09:12:30,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-03 09:12:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-03 09:12:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-03 09:12:30,226 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-03 09:12:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:30,227 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-03 09:12:30,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:12:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-03 09:12:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-03 09:12:30,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:30,228 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-03 09:12:30,228 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:30,228 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:30,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-03 09:12:30,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:30,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:30,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:30,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:30,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:32,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:32,141 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 [2018-10-03 09:12:32,149 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:12:32,442 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-03 09:12:32,442 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:32,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:32,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:32,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:12:32,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:12:32,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:12:32,818 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:32,819 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-03 09:12:33,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:33,086 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-03 09:12:33,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:12:33,087 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-03 09:12:33,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:33,088 INFO L225 Difference]: With dead ends: 201 [2018-10-03 09:12:33,088 INFO L226 Difference]: Without dead ends: 199 [2018-10-03 09:12:33,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 97 [2018-10-03 09:12:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-03 09:12:33,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-03 09:12:33,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-03 09:12:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-03 09:12:33,093 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-03 09:12:33,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:33,093 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-03 09:12:33,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:12:33,093 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-03 09:12:33,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-03 09:12:33,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:33,094 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-03 09:12:33,095 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:33,095 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:33,095 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-03 09:12:33,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:33,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:33,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:33,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:33,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:35,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:35,193 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 [2018-10-03 09:12:35,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:35,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:35,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:35,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:35,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:12:35,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:12:35,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:12:35,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:35,735 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-03 09:12:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:36,005 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-03 09:12:36,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:12:36,006 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-03 09:12:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:36,007 INFO L225 Difference]: With dead ends: 203 [2018-10-03 09:12:36,007 INFO L226 Difference]: Without dead ends: 201 [2018-10-03 09:12:36,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 98 [2018-10-03 09:12:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-03 09:12:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-03 09:12:36,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-03 09:12:36,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-03 09:12:36,010 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-03 09:12:36,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:36,010 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-03 09:12:36,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:12:36,010 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-03 09:12:36,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-03 09:12:36,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:36,011 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-03 09:12:36,011 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:36,011 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:36,011 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-03 09:12:36,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:36,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:36,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:36,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:36,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:37,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:37,961 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 [2018-10-03 09:12:37,968 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:12:38,123 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:12:38,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:38,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:38,505 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:38,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:12:38,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:12:38,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:12:38,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:38,506 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-03 09:12:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:38,832 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-03 09:12:38,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:12:38,833 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-03 09:12:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:38,834 INFO L225 Difference]: With dead ends: 205 [2018-10-03 09:12:38,834 INFO L226 Difference]: Without dead ends: 203 [2018-10-03 09:12:38,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 99 [2018-10-03 09:12:38,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-03 09:12:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-03 09:12:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-03 09:12:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-03 09:12:38,837 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-03 09:12:38,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:38,838 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-03 09:12:38,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:12:38,838 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-03 09:12:38,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-03 09:12:38,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:38,838 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-03 09:12:38,839 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:38,839 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:38,839 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-03 09:12:38,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:38,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:38,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:38,840 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:38,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:40,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:40,495 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 [2018-10-03 09:12:40,502 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:12:40,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-03 09:12:40,815 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:40,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:41,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:41,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:41,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:12:41,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:12:41,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:12:41,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:41,384 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-03 09:12:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:41,687 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-03 09:12:41,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:12:41,687 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-03 09:12:41,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:41,688 INFO L225 Difference]: With dead ends: 207 [2018-10-03 09:12:41,688 INFO L226 Difference]: Without dead ends: 205 [2018-10-03 09:12:41,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 100 [2018-10-03 09:12:41,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-03 09:12:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-03 09:12:41,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-03 09:12:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-03 09:12:41,691 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-03 09:12:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:41,691 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-03 09:12:41,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:12:41,692 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-03 09:12:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-03 09:12:41,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:41,692 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-03 09:12:41,693 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:41,693 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-03 09:12:41,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:41,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:41,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:41,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:41,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:43,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:43,470 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 [2018-10-03 09:12:43,477 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:12:43,636 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:12:43,636 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:43,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:44,038 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:44,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:12:44,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:12:44,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:12:44,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:44,040 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-03 09:12:44,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:44,359 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-03 09:12:44,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:12:44,359 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-03 09:12:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:44,360 INFO L225 Difference]: With dead ends: 209 [2018-10-03 09:12:44,360 INFO L226 Difference]: Without dead ends: 207 [2018-10-03 09:12:44,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.2s impTime 101 [2018-10-03 09:12:44,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-03 09:12:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-03 09:12:44,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-03 09:12:44,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-03 09:12:44,365 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-03 09:12:44,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:44,365 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-03 09:12:44,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:12:44,365 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-03 09:12:44,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-03 09:12:44,366 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:44,366 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-03 09:12:44,367 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:44,367 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:44,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-03 09:12:44,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:44,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:44,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:44,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:44,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:47,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:47,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:47,403 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 [2018-10-03 09:12:47,410 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:12:47,854 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-03 09:12:47,854 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:47,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:48,407 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:48,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:12:48,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:12:48,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:12:48,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:48,409 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-03 09:12:48,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:48,842 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-03 09:12:48,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:12:48,842 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-03 09:12:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:48,843 INFO L225 Difference]: With dead ends: 211 [2018-10-03 09:12:48,843 INFO L226 Difference]: Without dead ends: 209 [2018-10-03 09:12:48,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.5s impTime 102 [2018-10-03 09:12:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-03 09:12:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-03 09:12:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-03 09:12:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-03 09:12:48,847 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-03 09:12:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:48,847 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-03 09:12:48,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:12:48,847 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-03 09:12:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-03 09:12:48,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:48,848 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-03 09:12:48,848 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:48,848 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:48,848 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-03 09:12:48,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:48,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:48,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:48,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:48,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:50,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:50,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:50,683 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 [2018-10-03 09:12:50,691 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:12:51,017 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-03 09:12:51,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:51,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:51,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:51,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:12:51,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:12:51,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:12:51,598 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:51,598 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-03 09:12:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:51,927 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-03 09:12:51,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:12:51,928 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-03 09:12:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:51,928 INFO L225 Difference]: With dead ends: 213 [2018-10-03 09:12:51,928 INFO L226 Difference]: Without dead ends: 211 [2018-10-03 09:12:51,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.3s impTime 103 [2018-10-03 09:12:51,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-03 09:12:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-03 09:12:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-03 09:12:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-03 09:12:51,933 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-03 09:12:51,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:51,933 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-03 09:12:51,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:12:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-03 09:12:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-03 09:12:51,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:51,934 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-03 09:12:51,935 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:51,935 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:51,935 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-03 09:12:51,935 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:51,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:51,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:51,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:51,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:53,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:53,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:12:53,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:54,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:54,637 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:54,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:12:54,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:12:54,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:12:54,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:54,639 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-03 09:12:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:55,023 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-03 09:12:55,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:12:55,023 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-03 09:12:55,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:55,024 INFO L225 Difference]: With dead ends: 215 [2018-10-03 09:12:55,024 INFO L226 Difference]: Without dead ends: 213 [2018-10-03 09:12:55,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.5s impTime 104 [2018-10-03 09:12:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-03 09:12:55,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-03 09:12:55,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-03 09:12:55,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-03 09:12:55,029 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-03 09:12:55,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:55,030 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-03 09:12:55,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:12:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-03 09:12:55,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-03 09:12:55,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:55,031 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-03 09:12:55,031 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:55,031 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:55,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-03 09:12:55,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:55,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:55,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:55,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:12:55,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:12:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:58,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:12:58,311 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 [2018-10-03 09:12:58,318 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:12:58,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:12:58,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:12:58,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:12:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:12:58,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:12:58,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:12:58,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:12:58,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:12:58,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:12:58,946 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-03 09:12:59,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:12:59,432 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-03 09:12:59,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:12:59,432 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-03 09:12:59,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:12:59,433 INFO L225 Difference]: With dead ends: 217 [2018-10-03 09:12:59,433 INFO L226 Difference]: Without dead ends: 215 [2018-10-03 09:12:59,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.7s impTime 105 [2018-10-03 09:12:59,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-03 09:12:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-03 09:12:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-03 09:12:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-03 09:12:59,437 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-03 09:12:59,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:12:59,438 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-03 09:12:59,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:12:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-03 09:12:59,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-03 09:12:59,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:12:59,439 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-03 09:12:59,439 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:12:59,439 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:12:59,439 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-03 09:12:59,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:12:59,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:12:59,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:59,440 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:12:59,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:12:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:02,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:02,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:02,692 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 [2018-10-03 09:13:02,699 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:13:03,028 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-03 09:13:03,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:03,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:03,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:03,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:13:03,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:13:03,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:13:03,440 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:03,440 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-03 09:13:03,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:03,893 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-03 09:13:03,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:13:03,894 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-03 09:13:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:03,894 INFO L225 Difference]: With dead ends: 219 [2018-10-03 09:13:03,894 INFO L226 Difference]: Without dead ends: 217 [2018-10-03 09:13:03,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.7s impTime 106 [2018-10-03 09:13:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-03 09:13:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-03 09:13:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-03 09:13:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-03 09:13:03,898 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-03 09:13:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:03,898 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-03 09:13:03,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:13:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-03 09:13:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-03 09:13:03,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:03,899 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-03 09:13:03,899 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:03,899 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:03,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-03 09:13:03,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:03,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:03,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:03,900 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:03,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:07,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:07,018 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 [2018-10-03 09:13:07,026 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:13:07,196 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:13:07,196 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:07,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:07,611 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:07,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:13:07,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:13:07,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:13:07,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:07,613 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-03 09:13:08,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:08,092 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-03 09:13:08,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:13:08,092 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-03 09:13:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:08,092 INFO L225 Difference]: With dead ends: 221 [2018-10-03 09:13:08,092 INFO L226 Difference]: Without dead ends: 219 [2018-10-03 09:13:08,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.6s impTime 107 [2018-10-03 09:13:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-03 09:13:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-03 09:13:08,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-03 09:13:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-03 09:13:08,096 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-03 09:13:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:08,096 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-03 09:13:08,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:13:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-03 09:13:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-03 09:13:08,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:08,097 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-03 09:13:08,097 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:08,097 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-03 09:13:08,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:08,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:08,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:08,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:08,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:09,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:09,990 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 [2018-10-03 09:13:09,997 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:13:10,355 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-03 09:13:10,355 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:10,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:10,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:10,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:13:10,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:13:10,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:13:10,779 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:10,779 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-03 09:13:11,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:11,112 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-03 09:13:11,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:13:11,112 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-03 09:13:11,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:11,113 INFO L225 Difference]: With dead ends: 223 [2018-10-03 09:13:11,113 INFO L226 Difference]: Without dead ends: 221 [2018-10-03 09:13:11,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.3s impTime 108 [2018-10-03 09:13:11,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-03 09:13:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-03 09:13:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-03 09:13:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-03 09:13:11,117 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-03 09:13:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:11,117 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-03 09:13:11,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:13:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-03 09:13:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-03 09:13:11,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:11,119 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-03 09:13:11,119 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:11,119 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:11,119 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-03 09:13:11,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:11,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:11,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:11,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:11,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:13,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:13,802 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 [2018-10-03 09:13:13,847 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:13:14,209 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-03 09:13:14,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:14,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:14,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:14,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:13:14,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:13:14,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:13:14,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:14,637 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-03 09:13:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:15,125 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-03 09:13:15,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:13:15,126 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-03 09:13:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:15,126 INFO L225 Difference]: With dead ends: 225 [2018-10-03 09:13:15,126 INFO L226 Difference]: Without dead ends: 223 [2018-10-03 09:13:15,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.1s impTime 109 [2018-10-03 09:13:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-03 09:13:15,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-03 09:13:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-03 09:13:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-03 09:13:15,130 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-03 09:13:15,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:15,130 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-03 09:13:15,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:13:15,130 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-03 09:13:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-03 09:13:15,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:15,131 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-03 09:13:15,131 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:15,131 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:15,131 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-03 09:13:15,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:15,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:15,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:15,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:15,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:17,916 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:17,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:17,917 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 [2018-10-03 09:13:17,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:13:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:18,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:18,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:18,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:13:18,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:13:18,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:13:18,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:18,593 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-03 09:13:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:19,061 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-03 09:13:19,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:13:19,062 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-03 09:13:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:19,062 INFO L225 Difference]: With dead ends: 227 [2018-10-03 09:13:19,062 INFO L226 Difference]: Without dead ends: 225 [2018-10-03 09:13:19,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.3s impTime 110 [2018-10-03 09:13:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-03 09:13:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-03 09:13:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-03 09:13:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-03 09:13:19,065 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-03 09:13:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:19,066 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-03 09:13:19,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:13:19,066 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-03 09:13:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-03 09:13:19,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:19,066 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-03 09:13:19,067 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:19,067 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:19,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-03 09:13:19,067 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:19,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:19,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:19,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:13:19,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:22,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:22,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-03 09:13:22,546 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:13:22,730 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:13:22,730 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:22,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:23,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:23,234 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:23,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-03 09:13:23,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-03 09:13:23,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-03 09:13:23,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:23,237 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-10-03 09:13:23,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:23,793 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-03 09:13:23,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-03 09:13:23,794 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-10-03 09:13:23,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:23,794 INFO L225 Difference]: With dead ends: 229 [2018-10-03 09:13:23,794 INFO L226 Difference]: Without dead ends: 227 [2018-10-03 09:13:23,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.0s impTime 111 [2018-10-03 09:13:23,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-03 09:13:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-03 09:13:23,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-03 09:13:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-03 09:13:23,798 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-10-03 09:13:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:23,798 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-03 09:13:23,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-03 09:13:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-03 09:13:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-03 09:13:23,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:23,799 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-10-03 09:13:23,799 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:23,799 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-10-03 09:13:23,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:23,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:23,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:23,800 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:23,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:26,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:26,265 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 [2018-10-03 09:13:26,272 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:13:26,652 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-03 09:13:26,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:26,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:27,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:27,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-03 09:13:27,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-03 09:13:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-03 09:13:27,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:27,140 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-10-03 09:13:27,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:27,658 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-03 09:13:27,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-03 09:13:27,658 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-10-03 09:13:27,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:27,659 INFO L225 Difference]: With dead ends: 231 [2018-10-03 09:13:27,659 INFO L226 Difference]: Without dead ends: 229 [2018-10-03 09:13:27,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.9s impTime 112 [2018-10-03 09:13:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-03 09:13:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-03 09:13:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-03 09:13:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-03 09:13:27,662 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-10-03 09:13:27,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:27,662 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-03 09:13:27,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-03 09:13:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-03 09:13:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-03 09:13:27,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:27,663 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-10-03 09:13:27,663 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:27,663 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:27,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-10-03 09:13:27,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:27,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:27,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:27,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:27,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:29,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:29,922 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 [2018-10-03 09:13:29,929 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:13:30,109 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:13:30,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:30,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:30,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:13:30,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-03 09:13:30,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-03 09:13:30,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-03 09:13:30,731 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:13:30,731 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-10-03 09:13:31,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:13:31,217 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-03 09:13:31,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-03 09:13:31,217 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-10-03 09:13:31,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:13:31,217 INFO L225 Difference]: With dead ends: 233 [2018-10-03 09:13:31,217 INFO L226 Difference]: Without dead ends: 231 [2018-10-03 09:13:31,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.7s impTime 113 [2018-10-03 09:13:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-03 09:13:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-03 09:13:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-03 09:13:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-03 09:13:31,220 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-10-03 09:13:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:13:31,221 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-03 09:13:31,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-03 09:13:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-03 09:13:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-03 09:13:31,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:13:31,221 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-10-03 09:13:31,222 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:13:31,222 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:13:31,222 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-10-03 09:13:31,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:13:31,222 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:13:31,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:31,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:13:31,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:13:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:13:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:13:34,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:13:34,047 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 [2018-10-03 09:13:34,055 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... [2018-10-03 09:13:34,478 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-03 09:13:34,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:13:34,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:13:34,497 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-03 09:13:34,698 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:13:34,698 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:13:34,704 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:13:34,704 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:13:34 BoogieIcfgContainer [2018-10-03 09:13:34,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:13:34,705 INFO L168 Benchmark]: Toolchain (without parser) took 236901.74 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 661.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 165.6 MB). Peak memory consumption was 827.3 MB. Max. memory is 7.1 GB. [2018-10-03 09:13:34,707 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:13:34,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:13:34,709 INFO L168 Benchmark]: Boogie Preprocessor took 20.56 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-03 09:13:34,709 INFO L168 Benchmark]: RCFGBuilder took 330.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:13:34,709 INFO L168 Benchmark]: TraceAbstraction took 236503.72 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 661.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 144.5 MB). Peak memory consumption was 806.1 MB. Max. memory is 7.1 GB. [2018-10-03 09:13:34,712 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.56 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 330.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 236503.72 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 661.7 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 144.5 MB). Peak memory consumption was 806.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 231 with TraceHistMax 114, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 236.4s OverallTime, 114 OverallIterations, 114 TraceHistogramMax, 21.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 0 SDslu, 9863 SDs, 0 SdLazy, 9976 SolverSat, 209 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19546 GetRequests, 13105 SyntacticMatches, 0 SemanticMatches, 6441 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 175.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=113, 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: 0.4s AutomataMinimizationTime, 113 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.9s SsaConstructionTime, 18.7s SatisfiabilityAnalysisTime, 184.4s InterpolantComputationTime, 26212 NumberOfCodeBlocks, 26212 NumberOfCodeBlocksAsserted, 3380 NumberOfCheckSat, 25987 ConstructedInterpolants, 0 QuantifiedInterpolants, 11800117 SizeOfPredicates, 335 NumberOfNonLiveVariables, 77616 ConjunctsInSsa, 7108 ConjunctsInUnsatCore, 225 InterpolantComputations, 1 PerfectInterpolantSequences, 0/961856 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/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-13-34-725.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-13-34-725.csv Completed graceful shutdown