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_2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-10-01 00:39:45,528 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 00:39:45,530 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 00:39:45,544 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 00:39:45,576 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 [2018-10-01 00:39:45,592 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 00:39:45,592 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 00:39:45,593 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 00:39:45,593 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 00:39:45,594 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 00:39:45,594 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 00:39:45,594 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 00:39:45,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 00:39:45,594 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 00:39:45,595 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 00:39:45,595 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 00:39:45,595 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 00:39:45,595 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 00:39:45,595 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 00:39:45,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 00:39:45,596 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 00:39:45,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 00:39:45,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 00:39:45,596 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 00:39:45,597 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 00:39:45,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 00:39:45,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 00:39:45,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 00:39:45,597 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 00:39:45,598 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 00:39:45,598 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 00:39:45,598 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 00:39:45,598 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 00:39:45,598 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 00:39:45,599 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 00:39:45,599 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 00:39:45,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 00:39:45,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 00:39:45,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 00:39:45,690 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 00:39:45,690 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 00:39:45,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl [2018-10-01 00:39:45,692 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_2.i_3.bpl' [2018-10-01 00:39:45,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 00:39:45,745 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 00:39:45,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 00:39:45,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 00:39:45,747 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 00:39:45,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 00:39:45,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 00:39:45,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 00:39:45,786 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 00:39:45,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/1) ... [2018-10-01 00:39:45,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 00:39:45,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 00:39:45,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 00:39:45,806 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 00:39:45,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (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 [2018-10-01 00:39:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-01 00:39:45,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-01 00:39:46,112 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-01 00:39:46,112 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:39:46 BoogieIcfgContainer [2018-10-01 00:39:46,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 00:39:46,114 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 00:39:46,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 00:39:46,121 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 00:39:46,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 12:39:45" (1/2) ... [2018-10-01 00:39:46,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535d9c34 and model type count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 12:39:46, skipping insertion in model container [2018-10-01 00:39:46,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 12:39:46" (2/2) ... [2018-10-01 00:39:46,124 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_2.i_3.bpl [2018-10-01 00:39:46,136 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 00:39:46,148 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 00:39:46,207 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 00:39:46,208 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 00:39:46,208 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 00:39:46,208 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 00:39:46,208 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 00:39:46,209 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 00:39:46,209 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 00:39:46,209 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 00:39:46,209 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 00:39:46,230 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-01 00:39:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-01 00:39:46,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:46,245 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-01 00:39:46,246 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:46,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:46,253 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-01 00:39:46,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:46,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:46,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:46,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:46,415 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 00:39:46,415 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 00:39:46,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 00:39:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 00:39:46,434 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:46,436 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-01 00:39:46,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:46,556 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-01 00:39:46,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 00:39:46,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-01 00:39:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:46,571 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:39:46,571 INFO L226 Difference]: Without dead ends: 7 [2018-10-01 00:39:46,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:39:46,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-01 00:39:46,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-01 00:39:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-01 00:39:46,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-01 00:39:46,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-01 00:39:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:46,614 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-01 00:39:46,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 00:39:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-01 00:39:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 00:39:46,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:46,615 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-01 00:39:46,615 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:46,616 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-01 00:39:46,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:46,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:46,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:46,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:46,712 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:46,712 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 [2018-10-01 00:39:46,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:46,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:46,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:46,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 00:39:46,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 00:39:46,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 00:39:46,836 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:46,836 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-01 00:39:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:46,931 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-01 00:39:46,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 00:39:46,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-01 00:39:46,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:46,932 INFO L225 Difference]: With dead ends: 11 [2018-10-01 00:39:46,933 INFO L226 Difference]: Without dead ends: 9 [2018-10-01 00:39:46,934 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:46,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-01 00:39:46,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-01 00:39:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-01 00:39:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-01 00:39:46,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-01 00:39:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:46,938 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-01 00:39:46,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 00:39:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-01 00:39:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-01 00:39:46,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:46,939 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-01 00:39:46,939 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:46,940 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:46,940 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-01 00:39:46,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:46,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:46,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:46,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:47,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:47,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:47,047 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:47,047 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:47,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,115 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:47,115 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 00:39:47,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 00:39:47,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 00:39:47,116 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:47,116 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-01 00:39:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:47,245 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 00:39:47,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 00:39:47,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-01 00:39:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:47,247 INFO L225 Difference]: With dead ends: 13 [2018-10-01 00:39:47,247 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 00:39:47,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 00:39:47,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 00:39:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 00:39:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 00:39:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 00:39:47,251 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-01 00:39:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:47,252 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 00:39:47,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 00:39:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 00:39:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 00:39:47,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:47,253 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-01 00:39:47,253 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:47,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:47,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-01 00:39:47,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:47,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:47,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:47,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:47,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:47,496 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 [2018-10-01 00:39:47,504 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:47,536 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 00:39:47,536 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:47,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:47,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 00:39:47,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 00:39:47,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 00:39:47,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:47,639 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-01 00:39:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:47,727 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-01 00:39:47,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 00:39:47,729 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-01 00:39:47,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:47,730 INFO L225 Difference]: With dead ends: 15 [2018-10-01 00:39:47,731 INFO L226 Difference]: Without dead ends: 13 [2018-10-01 00:39:47,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-01 00:39:47,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-01 00:39:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-01 00:39:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-01 00:39:47,736 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-01 00:39:47,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:47,737 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-01 00:39:47,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 00:39:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-01 00:39:47,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-01 00:39:47,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:47,738 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-01 00:39:47,738 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:47,738 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:47,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-01 00:39:47,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:47,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:47,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:47,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:47,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:47,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:47,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:47,823 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:47,863 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:47,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:47,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:48,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 00:39:48,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 00:39:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 00:39:48,009 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:48,010 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-01 00:39:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:48,073 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 00:39:48,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 00:39:48,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-01 00:39:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:48,074 INFO L225 Difference]: With dead ends: 17 [2018-10-01 00:39:48,074 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 00:39:48,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 00:39:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 00:39:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 00:39:48,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 00:39:48,080 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-01 00:39:48,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:48,080 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 00:39:48,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 00:39:48,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 00:39:48,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 00:39:48,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:48,081 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-01 00:39:48,081 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:48,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-01 00:39:48,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:48,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:48,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:48,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:48,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:48,157 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:48,172 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:48,181 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 00:39:48,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:48,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:48,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:48,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 00:39:48,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 00:39:48,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 00:39:48,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:48,275 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-01 00:39:48,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:48,719 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-01 00:39:48,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 00:39:48,721 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-01 00:39:48,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:48,722 INFO L225 Difference]: With dead ends: 19 [2018-10-01 00:39:48,722 INFO L226 Difference]: Without dead ends: 17 [2018-10-01 00:39:48,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-01 00:39:48,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-01 00:39:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-01 00:39:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-01 00:39:48,729 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-01 00:39:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:48,729 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-01 00:39:48,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 00:39:48,730 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-01 00:39:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-01 00:39:48,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:48,730 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-01 00:39:48,731 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:48,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-01 00:39:48,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:48,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:48,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:48,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:48,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:48,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:48,860 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 [2018-10-01 00:39:48,876 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:48,930 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 00:39:48,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:48,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:49,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 00:39:49,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 00:39:49,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 00:39:49,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:49,030 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-01 00:39:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:49,220 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 00:39:49,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 00:39:49,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-01 00:39:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:49,222 INFO L225 Difference]: With dead ends: 21 [2018-10-01 00:39:49,222 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 00:39:49,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 00:39:49,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 00:39:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 00:39:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 00:39:49,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-01 00:39:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:49,228 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 00:39:49,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 00:39:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 00:39:49,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 00:39:49,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:49,229 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-01 00:39:49,229 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:49,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:49,229 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-01 00:39:49,230 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:49,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:49,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,231 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:49,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,341 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:49,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:49,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:49,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:49,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 00:39:49,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 00:39:49,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 00:39:49,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:49,471 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-01 00:39:49,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:49,619 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-01 00:39:49,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 00:39:49,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-01 00:39:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:49,621 INFO L225 Difference]: With dead ends: 23 [2018-10-01 00:39:49,621 INFO L226 Difference]: Without dead ends: 21 [2018-10-01 00:39:49,622 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-01 00:39:49,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-01 00:39:49,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-01 00:39:49,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-01 00:39:49,627 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-01 00:39:49,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:49,628 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-01 00:39:49,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 00:39:49,628 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-01 00:39:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-01 00:39:49,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:49,629 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-01 00:39:49,629 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:49,630 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:49,630 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-01 00:39:49,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:49,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:49,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:49,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:49,760 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,761 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:49,762 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 [2018-10-01 00:39:49,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:49,806 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:49,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:49,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:49,922 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:49,922 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 00:39:49,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 00:39:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 00:39:49,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:49,923 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-01 00:39:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:50,070 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 00:39:50,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 00:39:50,071 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-01 00:39:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:50,072 INFO L225 Difference]: With dead ends: 25 [2018-10-01 00:39:50,073 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 00:39:50,073 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:50,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 00:39:50,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 00:39:50,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 00:39:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 00:39:50,082 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-01 00:39:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:50,082 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 00:39:50,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 00:39:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 00:39:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 00:39:50,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:50,084 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-01 00:39:50,085 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:50,085 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:50,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-01 00:39:50,086 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:50,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:50,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:50,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,235 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:50,235 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:50,245 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:50,261 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-01 00:39:50,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:50,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:50,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 00:39:50,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 00:39:50,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 00:39:50,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:50,363 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-01 00:39:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:50,439 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-01 00:39:50,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 00:39:50,441 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-01 00:39:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:50,442 INFO L225 Difference]: With dead ends: 27 [2018-10-01 00:39:50,442 INFO L226 Difference]: Without dead ends: 25 [2018-10-01 00:39:50,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-01 00:39:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-01 00:39:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-01 00:39:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-01 00:39:50,446 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-01 00:39:50,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:50,446 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-01 00:39:50,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 00:39:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-01 00:39:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-01 00:39:50,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:50,447 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-01 00:39:50,448 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:50,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:50,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-01 00:39:50,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:50,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:50,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:50,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:50,627 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 [2018-10-01 00:39:50,636 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:50,646 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:50,646 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:50,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,748 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:50,748 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 00:39:50,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 00:39:50,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 00:39:50,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:50,749 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-01 00:39:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:50,822 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 00:39:50,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 00:39:50,823 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-01 00:39:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:50,824 INFO L225 Difference]: With dead ends: 29 [2018-10-01 00:39:50,824 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 00:39:50,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 00:39:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 00:39:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 00:39:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 00:39:50,829 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-01 00:39:50,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:50,830 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 00:39:50,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 00:39:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 00:39:50,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 00:39:50,831 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:50,831 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-01 00:39:50,832 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:50,832 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:50,832 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-01 00:39:50,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:50,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:50,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:50,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:50,956 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:50,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:50,965 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:50,991 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-01 00:39:50,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:50,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:51,097 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:51,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 00:39:51,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 00:39:51,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 00:39:51,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:51,099 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-01 00:39:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:51,338 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-01 00:39:51,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 00:39:51,341 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-01 00:39:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:51,341 INFO L225 Difference]: With dead ends: 31 [2018-10-01 00:39:51,341 INFO L226 Difference]: Without dead ends: 29 [2018-10-01 00:39:51,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:51,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-01 00:39:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-01 00:39:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-01 00:39:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-01 00:39:51,347 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-01 00:39:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:51,347 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-01 00:39:51,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 00:39:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-01 00:39:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-01 00:39:51,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:51,348 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-01 00:39:51,349 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:51,349 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:51,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-01 00:39:51,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:51,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:51,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:51,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:51,462 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:51,462 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 [2018-10-01 00:39:51,471 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:51,484 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 00:39:51,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:51,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:51,660 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:51,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:51,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 00:39:51,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 00:39:51,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 00:39:51,682 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:51,682 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-01 00:39:51,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:51,812 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 00:39:51,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 00:39:51,815 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-01 00:39:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:51,815 INFO L225 Difference]: With dead ends: 33 [2018-10-01 00:39:51,815 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 00:39:51,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:51,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 00:39:51,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 00:39:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 00:39:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 00:39:51,820 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-01 00:39:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:51,821 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 00:39:51,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 00:39:51,821 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 00:39:51,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 00:39:51,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:51,822 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-01 00:39:51,822 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:51,823 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:51,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-01 00:39:51,823 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:51,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:51,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:51,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:51,946 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:51,947 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 [2018-10-01 00:39:51,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:51,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,117 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:52,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 00:39:52,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 00:39:52,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 00:39:52,118 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:52,118 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-01 00:39:52,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:52,297 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-01 00:39:52,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 00:39:52,299 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-01 00:39:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:52,299 INFO L225 Difference]: With dead ends: 35 [2018-10-01 00:39:52,299 INFO L226 Difference]: Without dead ends: 33 [2018-10-01 00:39:52,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-01 00:39:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-01 00:39:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-01 00:39:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-01 00:39:52,304 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-01 00:39:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:52,304 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-01 00:39:52,305 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 00:39:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-01 00:39:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-01 00:39:52,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:52,306 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-01 00:39:52,306 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:52,306 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:52,306 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-01 00:39:52,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:52,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:52,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:52,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:52,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,421 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:52,421 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:52,432 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:52,446 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:52,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:52,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,567 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:52,568 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 00:39:52,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 00:39:52,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 00:39:52,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:52,569 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-01 00:39:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:52,688 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 00:39:52,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 00:39:52,689 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-01 00:39:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:52,690 INFO L225 Difference]: With dead ends: 37 [2018-10-01 00:39:52,690 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 00:39:52,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:52,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 00:39:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 00:39:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 00:39:52,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 00:39:52,696 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-01 00:39:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:52,696 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 00:39:52,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 00:39:52,696 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 00:39:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 00:39:52,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:52,697 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-01 00:39:52,698 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:52,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-01 00:39:52,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:52,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:52,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:52,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:52,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:52,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:52,912 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 [2018-10-01 00:39:52,923 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:52,951 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-01 00:39:52,952 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:52,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:53,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:53,146 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 00:39:53,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 00:39:53,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 00:39:53,146 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:53,146 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-01 00:39:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:53,438 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-01 00:39:53,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 00:39:53,440 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-01 00:39:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:53,441 INFO L225 Difference]: With dead ends: 39 [2018-10-01 00:39:53,442 INFO L226 Difference]: Without dead ends: 37 [2018-10-01 00:39:53,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:39:53,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-01 00:39:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-01 00:39:53,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-01 00:39:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-01 00:39:53,446 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-01 00:39:53,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:53,446 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-01 00:39:53,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 00:39:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-01 00:39:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-01 00:39:53,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:53,448 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-01 00:39:53,448 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:53,448 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:53,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-01 00:39:53,448 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:53,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:53,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:53,722 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:53,722 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 [2018-10-01 00:39:53,730 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:53,746 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:53,746 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:53,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:53,962 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:53,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 00:39:53,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 00:39:53,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 00:39:53,963 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:53,963 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-01 00:39:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:54,255 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 00:39:54,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 00:39:54,255 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-01 00:39:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:54,256 INFO L225 Difference]: With dead ends: 41 [2018-10-01 00:39:54,256 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 00:39:54,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 00:39:54,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 00:39:54,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 00:39:54,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 00:39:54,260 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-01 00:39:54,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:54,261 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 00:39:54,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 00:39:54,261 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 00:39:54,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 00:39:54,262 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:54,262 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-01 00:39:54,262 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:54,262 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:54,262 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-01 00:39:54,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:54,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:54,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:54,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:54,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:54,390 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:54,390 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 [2018-10-01 00:39:54,397 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:54,415 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 00:39:54,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:54,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:54,962 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:54,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 00:39:54,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 00:39:54,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 00:39:54,963 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:54,963 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-01 00:39:55,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:55,115 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-01 00:39:55,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 00:39:55,116 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-01 00:39:55,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:55,116 INFO L225 Difference]: With dead ends: 43 [2018-10-01 00:39:55,117 INFO L226 Difference]: Without dead ends: 41 [2018-10-01 00:39:55,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-01 00:39:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-01 00:39:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-01 00:39:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-01 00:39:55,122 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-01 00:39:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:55,122 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-01 00:39:55,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 00:39:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-01 00:39:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-01 00:39:55,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:55,123 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-01 00:39:55,124 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:55,124 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:55,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-01 00:39:55,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:55,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:55,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:55,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:55,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:55,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:55,483 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 [2018-10-01 00:39:55,490 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:55,508 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 00:39:55,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:55,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:55,705 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:55,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:55,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 00:39:55,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 00:39:55,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 00:39:55,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:55,743 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-01 00:39:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:56,205 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 00:39:56,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 00:39:56,205 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-01 00:39:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:56,206 INFO L225 Difference]: With dead ends: 45 [2018-10-01 00:39:56,206 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 00:39:56,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:39:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 00:39:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 00:39:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 00:39:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 00:39:56,211 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-01 00:39:56,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:56,211 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 00:39:56,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 00:39:56,211 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 00:39:56,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 00:39:56,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:56,212 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-01 00:39:56,212 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:56,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:56,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-01 00:39:56,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:56,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:56,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:56,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:56,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:56,352 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 [2018-10-01 00:39:56,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:56,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:56,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:56,487 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 00:39:56,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 00:39:56,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 00:39:56,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:56,487 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-01 00:39:56,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:56,637 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-01 00:39:56,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 00:39:56,638 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-01 00:39:56,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:56,639 INFO L225 Difference]: With dead ends: 47 [2018-10-01 00:39:56,639 INFO L226 Difference]: Without dead ends: 45 [2018-10-01 00:39:56,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 00:39:56,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-01 00:39:56,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-01 00:39:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-01 00:39:56,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-01 00:39:56,653 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-01 00:39:56,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:56,654 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-01 00:39:56,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 00:39:56,654 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-01 00:39:56,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-01 00:39:56,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:56,657 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-01 00:39:56,657 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:56,659 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:56,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-01 00:39:56,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:56,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:56,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:39:56,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:57,065 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:57,065 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:57,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:39:57,091 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:39:57,092 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:57,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:57,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:57,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 00:39:57,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 00:39:57,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 00:39:57,231 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:57,231 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-01 00:39:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:57,352 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 00:39:57,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 00:39:57,352 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-01 00:39:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:57,353 INFO L225 Difference]: With dead ends: 49 [2018-10-01 00:39:57,353 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 00:39:57,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 00:39:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 00:39:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 00:39:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 00:39:57,358 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-01 00:39:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:57,359 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 00:39:57,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 00:39:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 00:39:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 00:39:57,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:57,360 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-01 00:39:57,360 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:57,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-01 00:39:57,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:57,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:57,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:57,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:57,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:58,178 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:58,178 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 [2018-10-01 00:39:58,186 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:39:58,212 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-01 00:39:58,212 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:58,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:58,328 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,348 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:58,348 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 00:39:58,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 00:39:58,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 00:39:58,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:58,349 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-01 00:39:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:58,502 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-01 00:39:58,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 00:39:58,505 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-01 00:39:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:58,506 INFO L225 Difference]: With dead ends: 51 [2018-10-01 00:39:58,506 INFO L226 Difference]: Without dead ends: 49 [2018-10-01 00:39:58,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:39:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-01 00:39:58,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-01 00:39:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-01 00:39:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-01 00:39:58,510 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-01 00:39:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:58,510 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-01 00:39:58,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 00:39:58,510 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-01 00:39:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-01 00:39:58,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:58,511 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-01 00:39:58,511 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:58,511 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-01 00:39:58,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:58,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:58,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:58,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:58,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,710 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:58,710 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 [2018-10-01 00:39:58,718 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:39:58,734 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:39:58,734 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:58,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:58,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:58,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 00:39:58,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 00:39:58,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 00:39:58,887 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:58,888 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-01 00:39:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:59,074 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 00:39:59,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 00:39:59,074 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-01 00:39:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:59,075 INFO L225 Difference]: With dead ends: 53 [2018-10-01 00:39:59,075 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 00:39:59,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:39:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 00:39:59,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 00:39:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 00:39:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 00:39:59,080 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-01 00:39:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:59,081 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 00:39:59,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 00:39:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 00:39:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 00:39:59,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:59,082 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-01 00:39:59,082 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:59,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:59,082 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-01 00:39:59,083 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:59,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:59,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:59,084 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:59,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:59,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:59,419 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 [2018-10-01 00:39:59,441 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:39:59,464 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-01 00:39:59,464 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:59,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:39:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:59,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:39:59,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 00:39:59,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 00:39:59,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 00:39:59,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:39:59,640 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-01 00:39:59,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:39:59,731 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-01 00:39:59,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 00:39:59,732 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-01 00:39:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:39:59,733 INFO L225 Difference]: With dead ends: 55 [2018-10-01 00:39:59,733 INFO L226 Difference]: Without dead ends: 53 [2018-10-01 00:39:59,733 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:39:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-01 00:39:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-01 00:39:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-01 00:39:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-01 00:39:59,737 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-01 00:39:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:39:59,738 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-01 00:39:59,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 00:39:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-01 00:39:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-01 00:39:59,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:39:59,738 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-01 00:39:59,739 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:39:59,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:39:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-01 00:39:59,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:39:59,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:39:59,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:59,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:39:59,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:39:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:39:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:39:59,942 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:39:59,942 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:39:59,949 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:39:59,971 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 00:39:59,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:39:59,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:00,211 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:00,211 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 00:40:00,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 00:40:00,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 00:40:00,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:00,212 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-01 00:40:00,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:00,343 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 00:40:00,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 00:40:00,344 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-01 00:40:00,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:00,344 INFO L225 Difference]: With dead ends: 57 [2018-10-01 00:40:00,345 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 00:40:00,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:00,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 00:40:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 00:40:00,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 00:40:00,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 00:40:00,349 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-01 00:40:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:00,349 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 00:40:00,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 00:40:00,349 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 00:40:00,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 00:40:00,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:00,350 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-01 00:40:00,350 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:00,350 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-01 00:40:00,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:00,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:00,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:00,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:00,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:00,547 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:00,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:00,548 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 [2018-10-01 00:40:00,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:00,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:00,767 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:00,767 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 00:40:00,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 00:40:00,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 00:40:00,768 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:00,768 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-01 00:40:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:01,006 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-01 00:40:01,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 00:40:01,006 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-01 00:40:01,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:01,007 INFO L225 Difference]: With dead ends: 59 [2018-10-01 00:40:01,007 INFO L226 Difference]: Without dead ends: 57 [2018-10-01 00:40:01,007 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:01,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-01 00:40:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-01 00:40:01,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-01 00:40:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-01 00:40:01,011 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-01 00:40:01,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:01,011 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-01 00:40:01,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 00:40:01,011 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-01 00:40:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-01 00:40:01,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:01,012 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-01 00:40:01,012 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:01,012 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-01 00:40:01,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:01,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:01,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:01,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:01,448 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:01,448 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 [2018-10-01 00:40:01,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:01,472 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:01,472 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:01,473 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:01,640 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:01,640 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 00:40:01,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 00:40:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 00:40:01,641 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:01,641 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-01 00:40:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:01,826 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 00:40:01,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 00:40:01,827 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-01 00:40:01,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:01,828 INFO L225 Difference]: With dead ends: 61 [2018-10-01 00:40:01,828 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 00:40:01,828 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:01,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 00:40:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 00:40:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 00:40:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 00:40:01,831 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-01 00:40:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:01,831 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 00:40:01,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 00:40:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 00:40:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 00:40:01,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:01,832 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-01 00:40:01,832 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:01,833 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:01,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-01 00:40:01,833 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:01,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:01,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,834 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:01,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:02,141 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:02,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:02,149 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:02,176 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-01 00:40:02,177 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:02,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,315 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:02,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 00:40:02,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 00:40:02,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 00:40:02,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:02,316 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-01 00:40:02,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:02,496 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-01 00:40:02,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 00:40:02,497 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-01 00:40:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:02,498 INFO L225 Difference]: With dead ends: 63 [2018-10-01 00:40:02,498 INFO L226 Difference]: Without dead ends: 61 [2018-10-01 00:40:02,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-01 00:40:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-01 00:40:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-01 00:40:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-01 00:40:02,501 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-01 00:40:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:02,501 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-01 00:40:02,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 00:40:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-01 00:40:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-01 00:40:02,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:02,502 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-01 00:40:02,502 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:02,502 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:02,502 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-01 00:40:02,503 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:02,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:02,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:02,503 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:02,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,673 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:02,673 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 [2018-10-01 00:40:02,682 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:02,699 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:02,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:02,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:02,840 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:02,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 00:40:02,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 00:40:02,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 00:40:02,840 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:02,841 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-01 00:40:03,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:03,134 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 00:40:03,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 00:40:03,134 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-01 00:40:03,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:03,135 INFO L225 Difference]: With dead ends: 65 [2018-10-01 00:40:03,135 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 00:40:03,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:40:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 00:40:03,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 00:40:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 00:40:03,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 00:40:03,139 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-01 00:40:03,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:03,139 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 00:40:03,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 00:40:03,139 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 00:40:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 00:40:03,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:03,140 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-01 00:40:03,140 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:03,140 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:03,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-01 00:40:03,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:03,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:03,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:03,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:03,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:03,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:03,370 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 [2018-10-01 00:40:03,386 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:03,415 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-01 00:40:03,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:03,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:03,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:03,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 00:40:03,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 00:40:03,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 00:40:03,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:03,546 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-01 00:40:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:03,682 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-01 00:40:03,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 00:40:03,682 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-01 00:40:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:03,683 INFO L225 Difference]: With dead ends: 67 [2018-10-01 00:40:03,683 INFO L226 Difference]: Without dead ends: 65 [2018-10-01 00:40:03,684 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 00:40:03,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-01 00:40:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-01 00:40:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-01 00:40:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-01 00:40:03,686 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-01 00:40:03,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:03,687 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-01 00:40:03,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 00:40:03,687 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-01 00:40:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-01 00:40:03,687 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:03,687 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-01 00:40:03,687 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:03,688 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:03,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-01 00:40:03,688 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:03,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:03,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:03,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:03,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:04,098 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:04,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:04,099 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 [2018-10-01 00:40:04,108 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:04,173 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 00:40:04,174 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:04,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:04,416 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:04,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 00:40:04,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 00:40:04,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 00:40:04,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:04,417 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-01 00:40:04,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:04,629 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 00:40:04,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 00:40:04,630 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-01 00:40:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:04,631 INFO L225 Difference]: With dead ends: 69 [2018-10-01 00:40:04,631 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 00:40:04,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 00:40:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 00:40:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 00:40:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 00:40:04,636 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-01 00:40:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:04,636 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 00:40:04,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 00:40:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 00:40:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 00:40:04,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:04,637 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-01 00:40:04,637 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:04,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:04,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-01 00:40:04,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:04,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:04,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:04,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:04,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:04,913 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:04,913 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:04,913 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 [2018-10-01 00:40:04,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:04,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:05,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:05,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 00:40:05,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 00:40:05,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 00:40:05,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:05,245 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-01 00:40:05,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:05,377 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-01 00:40:05,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 00:40:05,379 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-01 00:40:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:05,379 INFO L225 Difference]: With dead ends: 71 [2018-10-01 00:40:05,380 INFO L226 Difference]: Without dead ends: 69 [2018-10-01 00:40:05,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-01 00:40:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-01 00:40:05,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-01 00:40:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-01 00:40:05,382 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-01 00:40:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:05,383 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-01 00:40:05,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 00:40:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-01 00:40:05,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-01 00:40:05,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:05,384 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-01 00:40:05,384 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:05,384 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:05,384 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-01 00:40:05,384 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:05,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:05,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:05,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:05,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:05,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:05,667 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 [2018-10-01 00:40:05,674 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:05,692 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:05,693 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:05,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:05,854 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:05,854 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 00:40:05,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 00:40:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 00:40:05,855 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:05,855 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-01 00:40:06,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:06,081 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 00:40:06,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 00:40:06,082 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-01 00:40:06,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:06,083 INFO L225 Difference]: With dead ends: 73 [2018-10-01 00:40:06,083 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 00:40:06,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 00:40:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 00:40:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 00:40:06,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 00:40:06,086 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-01 00:40:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:06,086 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 00:40:06,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 00:40:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 00:40:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 00:40:06,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:06,087 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-01 00:40:06,087 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:06,087 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:06,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-01 00:40:06,087 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:06,087 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:06,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:06,088 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:06,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:07,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:07,046 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 [2018-10-01 00:40:07,054 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:07,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 00:40:07,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:07,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:07,227 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:07,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 00:40:07,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 00:40:07,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 00:40:07,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:07,228 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-01 00:40:07,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:07,395 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-01 00:40:07,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 00:40:07,395 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-01 00:40:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:07,396 INFO L225 Difference]: With dead ends: 75 [2018-10-01 00:40:07,396 INFO L226 Difference]: Without dead ends: 73 [2018-10-01 00:40:07,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:40:07,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-01 00:40:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-01 00:40:07,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-01 00:40:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-01 00:40:07,400 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-01 00:40:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:07,400 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-01 00:40:07,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 00:40:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-01 00:40:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-01 00:40:07,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:07,401 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-01 00:40:07,402 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:07,402 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:07,402 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-01 00:40:07,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:07,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:07,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:07,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:07,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:07,727 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:07,727 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 [2018-10-01 00:40:07,735 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:07,753 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:07,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:07,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:07,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:07,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 00:40:07,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 00:40:07,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 00:40:07,878 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:07,878 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-01 00:40:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:08,144 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 00:40:08,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 00:40:08,145 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-01 00:40:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:08,146 INFO L225 Difference]: With dead ends: 77 [2018-10-01 00:40:08,146 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 00:40:08,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:08,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 00:40:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 00:40:08,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 00:40:08,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 00:40:08,150 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-01 00:40:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:08,150 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 00:40:08,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 00:40:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 00:40:08,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 00:40:08,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:08,151 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-01 00:40:08,151 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:08,151 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:08,151 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-01 00:40:08,151 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:08,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:08,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:08,152 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:08,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:08,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:08,380 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 [2018-10-01 00:40:08,387 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:08,419 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-01 00:40:08,420 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:08,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:09,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:09,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:09,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 00:40:09,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 00:40:09,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 00:40:09,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:09,063 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-01 00:40:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:09,360 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-01 00:40:09,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 00:40:09,360 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-01 00:40:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:09,361 INFO L225 Difference]: With dead ends: 79 [2018-10-01 00:40:09,361 INFO L226 Difference]: Without dead ends: 77 [2018-10-01 00:40:09,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:09,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-01 00:40:09,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-01 00:40:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-01 00:40:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-01 00:40:09,364 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-01 00:40:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:09,364 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-01 00:40:09,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 00:40:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-01 00:40:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-01 00:40:09,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:09,365 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-01 00:40:09,365 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:09,366 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:09,366 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-01 00:40:09,366 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:09,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:09,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:09,367 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:09,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:09,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:09,711 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 [2018-10-01 00:40:09,720 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:09,754 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 00:40:09,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:09,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:09,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:09,911 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 00:40:09,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 00:40:09,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 00:40:09,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:09,912 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-01 00:40:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:10,140 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 00:40:10,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 00:40:10,140 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-01 00:40:10,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:10,142 INFO L225 Difference]: With dead ends: 81 [2018-10-01 00:40:10,142 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 00:40:10,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:10,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 00:40:10,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 00:40:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 00:40:10,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 00:40:10,145 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-01 00:40:10,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:10,145 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 00:40:10,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 00:40:10,146 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 00:40:10,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 00:40:10,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:10,146 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-01 00:40:10,147 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:10,147 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:10,147 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-01 00:40:10,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:10,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:10,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:10,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:10,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:10,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:10,473 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 [2018-10-01 00:40:10,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:10,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:10,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:10,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:10,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 00:40:10,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 00:40:10,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 00:40:10,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:10,716 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-01 00:40:11,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:11,014 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-01 00:40:11,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 00:40:11,014 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-01 00:40:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:11,015 INFO L225 Difference]: With dead ends: 83 [2018-10-01 00:40:11,015 INFO L226 Difference]: Without dead ends: 81 [2018-10-01 00:40:11,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-01 00:40:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-01 00:40:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-01 00:40:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-01 00:40:11,020 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-01 00:40:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:11,020 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-01 00:40:11,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 00:40:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-01 00:40:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-01 00:40:11,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:11,021 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-01 00:40:11,022 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:11,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:11,022 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-01 00:40:11,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:11,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:11,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:11,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:11,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:11,450 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 [2018-10-01 00:40:11,457 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:11,477 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:11,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:11,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:11,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:11,649 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 00:40:11,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 00:40:11,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 00:40:11,649 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:11,649 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-01 00:40:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:11,900 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 00:40:11,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 00:40:11,901 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-01 00:40:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:11,902 INFO L225 Difference]: With dead ends: 85 [2018-10-01 00:40:11,902 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 00:40:11,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:11,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 00:40:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 00:40:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 00:40:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 00:40:11,906 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-01 00:40:11,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:11,906 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 00:40:11,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 00:40:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 00:40:11,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 00:40:11,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:11,907 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-01 00:40:11,907 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:11,907 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:11,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-01 00:40:11,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:11,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:11,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:11,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:12,318 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:12,318 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:12,325 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:12,372 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-01 00:40:12,372 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:12,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:12,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:12,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:12,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 00:40:12,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 00:40:12,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 00:40:12,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:12,522 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-01 00:40:12,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:12,832 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-01 00:40:12,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 00:40:12,833 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-01 00:40:12,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:12,834 INFO L225 Difference]: With dead ends: 87 [2018-10-01 00:40:12,834 INFO L226 Difference]: Without dead ends: 85 [2018-10-01 00:40:12,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-01 00:40:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-01 00:40:12,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-01 00:40:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-01 00:40:12,836 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-01 00:40:12,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:12,836 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-01 00:40:12,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 00:40:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-01 00:40:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-01 00:40:12,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:12,837 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-01 00:40:12,837 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:12,837 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:12,838 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-01 00:40:12,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:12,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:12,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:12,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:12,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:13,083 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:13,083 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 [2018-10-01 00:40:13,091 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:13,109 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:13,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:13,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:13,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:13,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 00:40:13,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 00:40:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 00:40:13,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:13,279 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-01 00:40:13,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:13,606 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 00:40:13,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 00:40:13,606 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-01 00:40:13,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:13,607 INFO L225 Difference]: With dead ends: 89 [2018-10-01 00:40:13,607 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 00:40:13,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 00:40:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 00:40:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 00:40:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 00:40:13,611 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-01 00:40:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:13,611 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 00:40:13,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 00:40:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 00:40:13,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 00:40:13,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:13,612 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-01 00:40:13,612 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:13,613 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-01 00:40:13,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:13,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:13,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:13,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:13,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:13,992 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:13,992 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 [2018-10-01 00:40:13,999 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:14,033 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-01 00:40:14,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:14,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:14,252 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:14,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 00:40:14,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 00:40:14,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 00:40:14,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:14,253 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-01 00:40:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:14,697 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-01 00:40:14,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 00:40:14,698 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-01 00:40:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:14,698 INFO L225 Difference]: With dead ends: 91 [2018-10-01 00:40:14,698 INFO L226 Difference]: Without dead ends: 89 [2018-10-01 00:40:14,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-01 00:40:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-01 00:40:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-01 00:40:14,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-01 00:40:14,702 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-01 00:40:14,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:14,702 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-01 00:40:14,702 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 00:40:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-01 00:40:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-01 00:40:14,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:14,703 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-01 00:40:14,703 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:14,703 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:14,703 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-01 00:40:14,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:14,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:14,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:14,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:14,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:15,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:15,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:15,167 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 [2018-10-01 00:40:15,174 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:15,211 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 00:40:15,212 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:15,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:15,435 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:15,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 00:40:15,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 00:40:15,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 00:40:15,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:15,437 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-01 00:40:15,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:15,616 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 00:40:15,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 00:40:15,617 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-01 00:40:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:15,618 INFO L225 Difference]: With dead ends: 93 [2018-10-01 00:40:15,618 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 00:40:15,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 00:40:15,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 00:40:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 00:40:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 00:40:15,621 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-01 00:40:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:15,622 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 00:40:15,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 00:40:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 00:40:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 00:40:15,622 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:15,622 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-01 00:40:15,622 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:15,623 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:15,623 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-01 00:40:15,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:15,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:15,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:15,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:15,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:16,845 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:16,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:16,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:16,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:17,045 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:17,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 00:40:17,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 00:40:17,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 00:40:17,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:17,047 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-01 00:40:17,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:17,327 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-01 00:40:17,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 00:40:17,328 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-01 00:40:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:17,329 INFO L225 Difference]: With dead ends: 95 [2018-10-01 00:40:17,329 INFO L226 Difference]: Without dead ends: 93 [2018-10-01 00:40:17,329 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:40:17,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-01 00:40:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-01 00:40:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-01 00:40:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-01 00:40:17,333 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-01 00:40:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:17,334 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-01 00:40:17,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 00:40:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-01 00:40:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-01 00:40:17,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:17,335 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-01 00:40:17,335 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:17,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:17,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-01 00:40:17,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:17,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:17,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:17,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:17,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:17,829 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:17,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:17,842 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:17,866 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:17,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:17,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:18,269 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:18,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 00:40:18,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 00:40:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 00:40:18,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:18,270 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-01 00:40:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:18,690 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 00:40:18,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 00:40:18,690 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-01 00:40:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:18,691 INFO L225 Difference]: With dead ends: 97 [2018-10-01 00:40:18,691 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 00:40:18,691 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 00:40:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 00:40:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 00:40:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 00:40:18,694 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-01 00:40:18,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:18,694 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 00:40:18,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 00:40:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 00:40:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 00:40:18,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:18,695 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-01 00:40:18,696 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:18,696 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:18,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-01 00:40:18,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:18,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:18,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:18,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:18,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:19,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:19,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:19,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:19,150 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-01 00:40:19,150 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:19,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:19,383 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:19,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 00:40:19,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 00:40:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 00:40:19,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:19,385 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-01 00:40:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:19,756 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-01 00:40:19,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 00:40:19,757 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-01 00:40:19,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:19,757 INFO L225 Difference]: With dead ends: 99 [2018-10-01 00:40:19,757 INFO L226 Difference]: Without dead ends: 97 [2018-10-01 00:40:19,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-01 00:40:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-01 00:40:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-01 00:40:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-01 00:40:19,761 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-01 00:40:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:19,761 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-01 00:40:19,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 00:40:19,761 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-01 00:40:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-01 00:40:19,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:19,762 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-01 00:40:19,762 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:19,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-01 00:40:19,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:19,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:19,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:19,763 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:19,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:19,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:20,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:20,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:20,140 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 [2018-10-01 00:40:20,147 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:20,171 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:20,172 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:20,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:20,370 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:20,370 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 00:40:20,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 00:40:20,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 00:40:20,371 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:20,371 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-01 00:40:20,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:20,672 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 00:40:20,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 00:40:20,672 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-01 00:40:20,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:20,673 INFO L225 Difference]: With dead ends: 101 [2018-10-01 00:40:20,673 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 00:40:20,674 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 00:40:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 00:40:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 00:40:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 00:40:20,676 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-01 00:40:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:20,677 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 00:40:20,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 00:40:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 00:40:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 00:40:20,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:20,678 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-01 00:40:20,678 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:20,678 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:20,678 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-01 00:40:20,678 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:20,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:20,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:20,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:20,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:20,938 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:20,938 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:20,946 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:20,986 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-01 00:40:20,986 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:20,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:21,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:21,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 00:40:21,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 00:40:21,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 00:40:21,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:21,176 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-01 00:40:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:21,410 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-01 00:40:21,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 00:40:21,410 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-01 00:40:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:21,411 INFO L225 Difference]: With dead ends: 103 [2018-10-01 00:40:21,411 INFO L226 Difference]: Without dead ends: 101 [2018-10-01 00:40:21,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 00:40:21,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-01 00:40:21,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-01 00:40:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-01 00:40:21,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-01 00:40:21,416 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-01 00:40:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:21,416 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-01 00:40:21,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 00:40:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-01 00:40:21,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-01 00:40:21,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:21,417 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-01 00:40:21,418 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:21,418 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:21,418 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-01 00:40:21,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:21,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:21,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:21,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:21,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:22,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:22,019 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 [2018-10-01 00:40:22,026 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:22,072 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 00:40:22,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:22,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:22,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:22,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 00:40:22,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 00:40:22,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 00:40:22,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:22,259 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-01 00:40:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:22,536 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 00:40:22,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 00:40:22,536 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-01 00:40:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:22,537 INFO L225 Difference]: With dead ends: 105 [2018-10-01 00:40:22,537 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 00:40:22,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:22,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 00:40:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 00:40:22,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 00:40:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 00:40:22,540 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-01 00:40:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:22,541 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 00:40:22,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 00:40:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 00:40:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 00:40:22,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:22,542 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-01 00:40:22,542 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:22,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:22,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-01 00:40:22,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:22,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:22,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:22,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:22,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:22,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:22,907 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 [2018-10-01 00:40:22,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:22,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:23,150 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:23,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 00:40:23,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 00:40:23,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 00:40:23,151 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:23,151 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-01 00:40:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:23,412 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-01 00:40:23,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 00:40:23,412 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-01 00:40:23,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:23,413 INFO L225 Difference]: With dead ends: 107 [2018-10-01 00:40:23,413 INFO L226 Difference]: Without dead ends: 105 [2018-10-01 00:40:23,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-01 00:40:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-01 00:40:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-01 00:40:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-01 00:40:23,416 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-01 00:40:23,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:23,417 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-01 00:40:23,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 00:40:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-01 00:40:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-01 00:40:23,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:23,418 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-01 00:40:23,418 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:23,418 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-01 00:40:23,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:23,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:23,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:23,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:23,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:24,122 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:24,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:24,130 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:24,157 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:24,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:24,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:24,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:24,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 00:40:24,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 00:40:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 00:40:24,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:24,471 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-01 00:40:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:24,947 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 00:40:24,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 00:40:24,948 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-01 00:40:24,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:24,949 INFO L225 Difference]: With dead ends: 109 [2018-10-01 00:40:24,950 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 00:40:24,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:40:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 00:40:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 00:40:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 00:40:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 00:40:24,953 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-01 00:40:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:24,953 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 00:40:24,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 00:40:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 00:40:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 00:40:24,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:24,954 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-01 00:40:24,955 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:24,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:24,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-01 00:40:24,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:24,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:24,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:24,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:24,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:25,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:25,245 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 [2018-10-01 00:40:25,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:25,888 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 00:40:25,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:25,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:26,504 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:26,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 00:40:26,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 00:40:26,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 00:40:26,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:26,505 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-01 00:40:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:26,833 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-01 00:40:26,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 00:40:26,833 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-01 00:40:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:26,834 INFO L225 Difference]: With dead ends: 111 [2018-10-01 00:40:26,834 INFO L226 Difference]: Without dead ends: 109 [2018-10-01 00:40:26,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:26,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-01 00:40:26,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-01 00:40:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-01 00:40:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-01 00:40:26,837 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-01 00:40:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:26,837 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-01 00:40:26,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 00:40:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-01 00:40:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-01 00:40:26,838 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:26,838 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-01 00:40:26,838 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:26,838 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:26,839 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-01 00:40:26,839 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:26,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:26,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:26,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:26,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:27,173 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:27,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:27,188 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:27,237 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:27,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:27,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:27,467 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:27,467 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 00:40:27,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 00:40:27,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 00:40:27,468 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:27,468 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-01 00:40:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:27,783 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 00:40:27,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 00:40:27,784 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-01 00:40:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:27,785 INFO L225 Difference]: With dead ends: 113 [2018-10-01 00:40:27,785 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 00:40:27,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 00:40:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 00:40:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 00:40:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 00:40:27,788 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-01 00:40:27,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:27,788 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 00:40:27,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 00:40:27,788 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 00:40:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 00:40:27,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:27,789 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-01 00:40:27,789 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:27,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-01 00:40:27,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:27,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:27,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:27,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:27,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:28,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:28,436 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 [2018-10-01 00:40:28,451 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:28,581 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-01 00:40:28,581 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:28,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:28,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:28,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 00:40:28,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 00:40:28,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 00:40:28,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:28,827 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-01 00:40:29,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:29,034 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-01 00:40:29,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 00:40:29,034 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-01 00:40:29,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:29,036 INFO L225 Difference]: With dead ends: 115 [2018-10-01 00:40:29,036 INFO L226 Difference]: Without dead ends: 113 [2018-10-01 00:40:29,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-01 00:40:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-01 00:40:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-01 00:40:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-01 00:40:29,040 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-01 00:40:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:29,040 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-01 00:40:29,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 00:40:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-01 00:40:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-01 00:40:29,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:29,041 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-01 00:40:29,041 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:29,041 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-01 00:40:29,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:29,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:29,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:29,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:29,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:29,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:29,568 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 [2018-10-01 00:40:29,574 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:29,644 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 00:40:29,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:29,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:30,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:30,109 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 00:40:30,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 00:40:30,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 00:40:30,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:30,110 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-01 00:40:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:30,540 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 00:40:30,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 00:40:30,540 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-01 00:40:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:30,542 INFO L225 Difference]: With dead ends: 117 [2018-10-01 00:40:30,542 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 00:40:30,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 00:40:30,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 00:40:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 00:40:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 00:40:30,545 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-01 00:40:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:30,545 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 00:40:30,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 00:40:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 00:40:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 00:40:30,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:30,546 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-01 00:40:30,547 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:30,547 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:30,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-01 00:40:30,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:30,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:30,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:30,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:30,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:32,745 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:32,745 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 [2018-10-01 00:40:32,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:32,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:33,004 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:33,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 00:40:33,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 00:40:33,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 00:40:33,005 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:33,005 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-01 00:40:33,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:33,806 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-01 00:40:33,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 00:40:33,806 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-01 00:40:33,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:33,807 INFO L225 Difference]: With dead ends: 119 [2018-10-01 00:40:33,807 INFO L226 Difference]: Without dead ends: 117 [2018-10-01 00:40:33,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:40:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-01 00:40:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-01 00:40:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-01 00:40:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-01 00:40:33,813 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-01 00:40:33,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:33,813 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-01 00:40:33,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 00:40:33,814 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-01 00:40:33,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-01 00:40:33,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:33,814 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-01 00:40:33,815 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:33,815 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-01 00:40:33,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:33,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:33,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:33,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:33,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:34,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:34,176 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 [2018-10-01 00:40:34,183 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:34,214 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:34,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:34,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:34,430 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:34,430 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 00:40:34,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 00:40:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 00:40:34,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:34,431 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-01 00:40:34,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:34,782 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 00:40:34,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 00:40:34,782 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-01 00:40:34,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:34,783 INFO L225 Difference]: With dead ends: 121 [2018-10-01 00:40:34,783 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 00:40:34,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 00:40:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 00:40:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 00:40:34,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 00:40:34,787 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-01 00:40:34,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:34,787 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 00:40:34,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 00:40:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 00:40:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 00:40:34,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:34,788 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-01 00:40:34,789 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:34,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:34,789 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-01 00:40:34,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:34,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:34,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:34,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:34,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:35,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:35,279 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 [2018-10-01 00:40:35,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:35,342 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-01 00:40:35,343 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:35,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:35,841 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:35,841 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 00:40:35,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 00:40:35,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 00:40:35,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:35,842 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-01 00:40:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:36,070 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-01 00:40:36,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 00:40:36,071 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-01 00:40:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:36,072 INFO L225 Difference]: With dead ends: 123 [2018-10-01 00:40:36,072 INFO L226 Difference]: Without dead ends: 121 [2018-10-01 00:40:36,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-01 00:40:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-01 00:40:36,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-01 00:40:36,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-01 00:40:36,074 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-01 00:40:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:36,075 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-01 00:40:36,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 00:40:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-01 00:40:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-01 00:40:36,076 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:36,076 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-01 00:40:36,076 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:36,076 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-01 00:40:36,076 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:36,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:36,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:36,077 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:36,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:37,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:37,386 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 [2018-10-01 00:40:37,397 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:37,429 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:37,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:37,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:38,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:38,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 00:40:38,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 00:40:38,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 00:40:38,677 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:38,678 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-01 00:40:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:39,092 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 00:40:39,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 00:40:39,093 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-01 00:40:39,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:39,093 INFO L225 Difference]: With dead ends: 125 [2018-10-01 00:40:39,093 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 00:40:39,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:40:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 00:40:39,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 00:40:39,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 00:40:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 00:40:39,097 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-01 00:40:39,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:39,097 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 00:40:39,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 00:40:39,097 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 00:40:39,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 00:40:39,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:39,098 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-01 00:40:39,099 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:39,099 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:39,099 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-01 00:40:39,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:39,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:39,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:39,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:39,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:39,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:39,451 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:39,459 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:39,526 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-01 00:40:39,526 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:39,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:39,945 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:39,946 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 00:40:39,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 00:40:39,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 00:40:39,947 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:39,947 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-01 00:40:40,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:40,488 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-01 00:40:40,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 00:40:40,488 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-01 00:40:40,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:40,489 INFO L225 Difference]: With dead ends: 127 [2018-10-01 00:40:40,489 INFO L226 Difference]: Without dead ends: 125 [2018-10-01 00:40:40,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:40,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-01 00:40:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-01 00:40:40,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-01 00:40:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-01 00:40:40,492 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-01 00:40:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:40,492 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-01 00:40:40,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 00:40:40,493 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-01 00:40:40,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-01 00:40:40,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:40,493 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-01 00:40:40,494 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:40,494 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:40,494 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-01 00:40:40,494 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:40,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:40,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:40,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:40,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:41,506 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:41,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:41,515 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:41,571 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 00:40:41,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:41,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:41,800 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:41,800 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 00:40:41,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 00:40:41,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 00:40:41,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:41,801 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-01 00:40:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:42,210 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 00:40:42,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 00:40:42,210 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-01 00:40:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:42,212 INFO L225 Difference]: With dead ends: 129 [2018-10-01 00:40:42,212 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 00:40:42,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:40:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 00:40:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 00:40:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 00:40:42,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 00:40:42,215 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-01 00:40:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:42,215 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 00:40:42,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 00:40:42,215 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 00:40:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 00:40:42,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:42,216 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-01 00:40:42,216 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:42,216 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:42,217 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-01 00:40:42,217 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:42,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:42,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:42,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:42,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:42,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:42,564 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:42,565 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 [2018-10-01 00:40:42,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:42,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:42,851 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:42,851 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 00:40:42,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 00:40:42,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 00:40:42,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:42,852 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-01 00:40:43,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:43,192 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-01 00:40:43,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 00:40:43,192 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-01 00:40:43,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:43,193 INFO L225 Difference]: With dead ends: 131 [2018-10-01 00:40:43,193 INFO L226 Difference]: Without dead ends: 129 [2018-10-01 00:40:43,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-01 00:40:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-01 00:40:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-01 00:40:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-01 00:40:43,196 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-01 00:40:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:43,196 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-01 00:40:43,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 00:40:43,196 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-01 00:40:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-01 00:40:43,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:43,197 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-01 00:40:43,197 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:43,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:43,197 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-01 00:40:43,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:43,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:43,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:43,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:43,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:43,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:43,544 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 [2018-10-01 00:40:43,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:43,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:43,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:43,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:43,819 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:43,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 00:40:43,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 00:40:43,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 00:40:43,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:43,821 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-01 00:40:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:44,153 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 00:40:44,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 00:40:44,154 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-01 00:40:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:44,155 INFO L225 Difference]: With dead ends: 133 [2018-10-01 00:40:44,155 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 00:40:44,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:44,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 00:40:44,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 00:40:44,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 00:40:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 00:40:44,159 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-01 00:40:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:44,159 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 00:40:44,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 00:40:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 00:40:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 00:40:44,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:44,160 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-01 00:40:44,160 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:44,160 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:44,160 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-01 00:40:44,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:44,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:44,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:44,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:44,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:44,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:44,548 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 [2018-10-01 00:40:44,560 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:44,638 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-01 00:40:44,638 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:44,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:44,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:44,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 00:40:44,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 00:40:44,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 00:40:44,918 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:44,919 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-01 00:40:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:45,485 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-01 00:40:45,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 00:40:45,485 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-01 00:40:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:45,486 INFO L225 Difference]: With dead ends: 135 [2018-10-01 00:40:45,486 INFO L226 Difference]: Without dead ends: 133 [2018-10-01 00:40:45,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:45,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-01 00:40:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-01 00:40:45,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-01 00:40:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-01 00:40:45,491 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-01 00:40:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:45,491 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-01 00:40:45,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 00:40:45,491 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-01 00:40:45,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-01 00:40:45,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:45,492 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-01 00:40:45,492 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:45,492 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:45,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-01 00:40:45,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:45,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:45,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:45,493 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:45,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:45,829 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:45,829 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 [2018-10-01 00:40:45,837 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:45,870 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:45,870 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:45,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:46,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:46,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 00:40:46,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 00:40:46,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 00:40:46,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:46,132 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-01 00:40:47,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:47,671 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 00:40:47,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 00:40:47,671 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-01 00:40:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:47,672 INFO L225 Difference]: With dead ends: 137 [2018-10-01 00:40:47,672 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 00:40:47,672 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 00:40:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 00:40:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 00:40:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 00:40:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 00:40:47,675 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-01 00:40:47,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:47,675 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 00:40:47,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 00:40:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 00:40:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 00:40:47,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:47,676 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-01 00:40:47,676 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:47,676 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:47,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-01 00:40:47,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:47,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:47,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:47,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:47,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:48,029 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:48,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:48,036 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:48,104 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-01 00:40:48,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:48,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:48,380 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:48,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 00:40:48,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 00:40:48,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 00:40:48,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:48,381 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-01 00:40:48,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:48,918 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-01 00:40:48,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 00:40:48,918 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-01 00:40:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:48,919 INFO L225 Difference]: With dead ends: 139 [2018-10-01 00:40:48,919 INFO L226 Difference]: Without dead ends: 137 [2018-10-01 00:40:48,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-01 00:40:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-01 00:40:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-01 00:40:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-01 00:40:48,922 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-01 00:40:48,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:48,922 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-01 00:40:48,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 00:40:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-01 00:40:48,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-01 00:40:48,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:48,923 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-01 00:40:48,923 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:48,923 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:48,923 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-01 00:40:48,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:48,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:48,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:48,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:48,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:49,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:49,268 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 [2018-10-01 00:40:49,274 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:49,339 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 00:40:49,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:49,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:49,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:49,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 00:40:49,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 00:40:49,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 00:40:49,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:49,827 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-01 00:40:50,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:50,257 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 00:40:50,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 00:40:50,257 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-01 00:40:50,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:50,258 INFO L225 Difference]: With dead ends: 141 [2018-10-01 00:40:50,258 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 00:40:50,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:50,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 00:40:50,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 00:40:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 00:40:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 00:40:50,260 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-01 00:40:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:50,261 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 00:40:50,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 00:40:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 00:40:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 00:40:50,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:50,261 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-01 00:40:50,261 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:50,262 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:50,262 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-01 00:40:50,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:50,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:50,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:50,262 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:50,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:51,191 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:51,191 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 [2018-10-01 00:40:51,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:51,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:52,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:52,109 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:52,109 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 00:40:52,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 00:40:52,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 00:40:52,110 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:52,110 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-01 00:40:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:52,566 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-01 00:40:52,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 00:40:52,566 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-01 00:40:52,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:52,567 INFO L225 Difference]: With dead ends: 143 [2018-10-01 00:40:52,567 INFO L226 Difference]: Without dead ends: 141 [2018-10-01 00:40:52,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:40:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-01 00:40:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-01 00:40:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-01 00:40:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-01 00:40:52,570 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-01 00:40:52,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:52,570 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-01 00:40:52,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 00:40:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-01 00:40:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-01 00:40:52,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:52,571 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-01 00:40:52,571 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:52,571 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:52,571 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-01 00:40:52,571 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:52,571 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:52,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:52,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:40:52,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:52,958 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:52,958 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 [2018-10-01 00:40:52,965 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:40:53,001 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:40:53,002 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:53,004 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:53,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:53,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 00:40:53,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 00:40:53,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 00:40:53,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:53,270 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-01 00:40:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:53,762 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 00:40:53,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 00:40:53,762 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-01 00:40:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:53,763 INFO L225 Difference]: With dead ends: 145 [2018-10-01 00:40:53,763 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 00:40:53,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:40:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 00:40:53,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 00:40:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 00:40:53,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 00:40:53,766 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-01 00:40:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:53,766 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 00:40:53,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 00:40:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 00:40:53,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 00:40:53,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:53,767 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-01 00:40:53,767 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:53,768 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:53,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-01 00:40:53,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:53,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:53,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:53,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:53,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:54,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:54,152 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 [2018-10-01 00:40:54,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:40:54,245 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 00:40:54,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:54,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:54,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:54,763 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:54,763 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 00:40:54,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 00:40:54,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 00:40:54,765 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:54,765 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-01 00:40:55,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:55,255 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-01 00:40:55,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 00:40:55,255 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-01 00:40:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:55,256 INFO L225 Difference]: With dead ends: 147 [2018-10-01 00:40:55,256 INFO L226 Difference]: Without dead ends: 145 [2018-10-01 00:40:55,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-01 00:40:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-01 00:40:55,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-01 00:40:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-01 00:40:55,259 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-01 00:40:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:55,259 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-01 00:40:55,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 00:40:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-01 00:40:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-01 00:40:55,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:55,260 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-01 00:40:55,260 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:55,260 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:55,261 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-01 00:40:55,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:55,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:55,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:55,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:55,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:55,830 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:55,830 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:55,838 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:40:55,874 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:40:55,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:55,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:56,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:56,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 00:40:56,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 00:40:56,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 00:40:56,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:56,259 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-01 00:40:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:56,739 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 00:40:56,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 00:40:56,739 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-01 00:40:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:56,740 INFO L225 Difference]: With dead ends: 149 [2018-10-01 00:40:56,740 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 00:40:56,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:40:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 00:40:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 00:40:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 00:40:56,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 00:40:56,743 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-01 00:40:56,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:56,744 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 00:40:56,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 00:40:56,744 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 00:40:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 00:40:56,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:56,745 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-01 00:40:56,745 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:56,745 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:56,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-01 00:40:56,745 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:56,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:56,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:56,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:56,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:57,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:57,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:40:57,188 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:40:57,651 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-01 00:40:57,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:57,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:58,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:58,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 00:40:58,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 00:40:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 00:40:58,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:58,086 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-01 00:40:58,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:58,577 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-01 00:40:58,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 00:40:58,577 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-01 00:40:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:58,578 INFO L225 Difference]: With dead ends: 151 [2018-10-01 00:40:58,578 INFO L226 Difference]: Without dead ends: 149 [2018-10-01 00:40:58,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:40:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-01 00:40:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-01 00:40:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-01 00:40:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-01 00:40:58,582 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-01 00:40:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:58,582 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-01 00:40:58,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 00:40:58,582 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-01 00:40:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-01 00:40:58,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:58,583 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-01 00:40:58,583 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:58,584 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:58,584 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-01 00:40:58,584 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:58,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:58,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:58,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:58,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:40:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:58,987 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:40:58,987 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 [2018-10-01 00:40:58,995 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:40:59,066 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 00:40:59,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:40:59,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:40:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:40:59,402 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:40:59,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 00:40:59,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 00:40:59,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 00:40:59,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:40:59,404 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-01 00:40:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:40:59,738 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 00:40:59,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 00:40:59,739 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-01 00:40:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:40:59,740 INFO L225 Difference]: With dead ends: 153 [2018-10-01 00:40:59,740 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 00:40:59,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:40:59,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 00:40:59,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 00:40:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 00:40:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 00:40:59,744 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-01 00:40:59,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:40:59,745 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 00:40:59,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 00:40:59,745 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 00:40:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 00:40:59,745 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:40:59,746 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-01 00:40:59,746 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:40:59,746 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:40:59,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-01 00:40:59,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:40:59,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:40:59,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:59,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:40:59,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:40:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:00,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:00,205 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 [2018-10-01 00:41:00,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:00,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:00,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:00,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 00:41:00,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 00:41:00,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 00:41:00,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:00,719 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-01 00:41:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:01,240 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-01 00:41:01,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 00:41:01,240 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-01 00:41:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:01,241 INFO L225 Difference]: With dead ends: 155 [2018-10-01 00:41:01,241 INFO L226 Difference]: Without dead ends: 153 [2018-10-01 00:41:01,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:01,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-01 00:41:01,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-01 00:41:01,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-01 00:41:01,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-01 00:41:01,245 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-01 00:41:01,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:01,245 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-01 00:41:01,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 00:41:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-01 00:41:01,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-01 00:41:01,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:01,246 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-01 00:41:01,246 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:01,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:01,247 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-01 00:41:01,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:01,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:01,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:01,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:01,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:01,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:01,853 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 [2018-10-01 00:41:01,861 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:01,900 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:01,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:01,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:02,203 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:02,203 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 00:41:02,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 00:41:02,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 00:41:02,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:02,204 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-01 00:41:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:02,582 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 00:41:02,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 00:41:02,582 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-01 00:41:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:02,583 INFO L225 Difference]: With dead ends: 157 [2018-10-01 00:41:02,583 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 00:41:02,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 00:41:02,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 00:41:02,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 00:41:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 00:41:02,586 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-01 00:41:02,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:02,586 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 00:41:02,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 00:41:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 00:41:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 00:41:02,587 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:02,587 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-01 00:41:02,588 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:02,588 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-01 00:41:02,588 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:02,588 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:02,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:02,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:02,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:03,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:03,219 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 [2018-10-01 00:41:03,227 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:03,307 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-01 00:41:03,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:03,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:03,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:03,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 00:41:03,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 00:41:03,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 00:41:03,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:03,580 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-01 00:41:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:03,907 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-01 00:41:03,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 00:41:03,908 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-01 00:41:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:03,909 INFO L225 Difference]: With dead ends: 159 [2018-10-01 00:41:03,909 INFO L226 Difference]: Without dead ends: 157 [2018-10-01 00:41:03,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-01 00:41:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-01 00:41:03,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-01 00:41:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-01 00:41:03,911 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-01 00:41:03,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:03,912 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-01 00:41:03,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 00:41:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-01 00:41:03,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-01 00:41:03,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:03,912 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-01 00:41:03,913 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:03,913 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:03,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-01 00:41:03,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:03,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:03,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:03,914 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:03,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:04,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:04,319 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 [2018-10-01 00:41:04,327 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:04,367 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:04,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:04,370 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:04,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:04,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 00:41:04,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 00:41:04,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 00:41:04,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:04,652 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-01 00:41:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:05,302 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 00:41:05,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 00:41:05,302 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-01 00:41:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:05,303 INFO L225 Difference]: With dead ends: 161 [2018-10-01 00:41:05,303 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 00:41:05,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 00:41:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 00:41:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 00:41:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 00:41:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 00:41:05,306 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-01 00:41:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:05,306 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 00:41:05,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 00:41:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 00:41:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 00:41:05,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:05,307 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-01 00:41:05,307 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:05,307 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:05,307 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-01 00:41:05,307 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:05,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:05,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:05,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:05,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:05,981 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 [2018-10-01 00:41:05,988 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:06,068 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-01 00:41:06,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:06,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:06,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:06,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 00:41:06,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 00:41:06,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 00:41:06,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:06,362 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-01 00:41:07,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:07,013 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-01 00:41:07,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 00:41:07,014 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-01 00:41:07,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:07,015 INFO L225 Difference]: With dead ends: 163 [2018-10-01 00:41:07,015 INFO L226 Difference]: Without dead ends: 161 [2018-10-01 00:41:07,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:07,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-01 00:41:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-01 00:41:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-01 00:41:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-01 00:41:07,019 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-01 00:41:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:07,019 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-01 00:41:07,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 00:41:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-01 00:41:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-01 00:41:07,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:07,020 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-01 00:41:07,020 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:07,021 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:07,021 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-01 00:41:07,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:07,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:07,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:07,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:07,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:07,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:07,496 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 [2018-10-01 00:41:07,503 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:07,626 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 00:41:07,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:07,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:07,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:07,943 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 00:41:07,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 00:41:07,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 00:41:07,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:07,944 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-01 00:41:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:08,329 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 00:41:08,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 00:41:08,330 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-01 00:41:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:08,331 INFO L225 Difference]: With dead ends: 165 [2018-10-01 00:41:08,331 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 00:41:08,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 00:41:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 00:41:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 00:41:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 00:41:08,335 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-01 00:41:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:08,335 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 00:41:08,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 00:41:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 00:41:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 00:41:08,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:08,337 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-01 00:41:08,337 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:08,337 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:08,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-01 00:41:08,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:08,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:08,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:08,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:08,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:08,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:08,886 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 [2018-10-01 00:41:08,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:08,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:09,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:09,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 00:41:09,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 00:41:09,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 00:41:09,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:09,305 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-01 00:41:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:09,781 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-01 00:41:09,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 00:41:09,781 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-01 00:41:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:09,782 INFO L225 Difference]: With dead ends: 167 [2018-10-01 00:41:09,782 INFO L226 Difference]: Without dead ends: 165 [2018-10-01 00:41:09,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-01 00:41:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-01 00:41:09,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-01 00:41:09,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-01 00:41:09,785 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-01 00:41:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:09,785 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-01 00:41:09,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 00:41:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-01 00:41:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-01 00:41:09,786 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:09,786 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-01 00:41:09,787 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:09,787 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:09,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-01 00:41:09,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:09,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:09,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:09,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:10,283 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 [2018-10-01 00:41:10,291 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:10,332 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:10,333 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:10,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:10,638 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:10,638 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 00:41:10,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 00:41:10,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 00:41:10,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:10,639 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-01 00:41:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:11,391 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 00:41:11,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 00:41:11,392 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-01 00:41:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:11,392 INFO L225 Difference]: With dead ends: 169 [2018-10-01 00:41:11,392 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 00:41:11,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 00:41:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 00:41:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 00:41:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 00:41:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 00:41:11,395 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-01 00:41:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:11,395 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 00:41:11,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 00:41:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 00:41:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 00:41:11,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:11,396 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-01 00:41:11,396 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:11,397 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-01 00:41:11,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:11,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:11,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:11,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:12,107 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:12,108 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 [2018-10-01 00:41:12,115 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:12,202 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-01 00:41:12,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:12,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:12,505 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:12,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 00:41:12,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 00:41:12,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 00:41:12,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:12,507 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-01 00:41:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:13,048 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-01 00:41:13,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 00:41:13,048 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-01 00:41:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:13,049 INFO L225 Difference]: With dead ends: 171 [2018-10-01 00:41:13,049 INFO L226 Difference]: Without dead ends: 169 [2018-10-01 00:41:13,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-01 00:41:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-01 00:41:13,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-01 00:41:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-01 00:41:13,052 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-01 00:41:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:13,053 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-01 00:41:13,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 00:41:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-01 00:41:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-01 00:41:13,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:13,053 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-01 00:41:13,054 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:13,054 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:13,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-01 00:41:13,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:13,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:13,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:13,055 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:13,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:13,510 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:13,510 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 [2018-10-01 00:41:13,520 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:13,562 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:13,562 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:13,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:13,928 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:13,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:13,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 00:41:13,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 00:41:13,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 00:41:13,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:13,950 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-01 00:41:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:14,353 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 00:41:14,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 00:41:14,353 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-01 00:41:14,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:14,354 INFO L225 Difference]: With dead ends: 173 [2018-10-01 00:41:14,354 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 00:41:14,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 00:41:14,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 00:41:14,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 00:41:14,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 00:41:14,357 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-01 00:41:14,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:14,357 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 00:41:14,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 00:41:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 00:41:14,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 00:41:14,358 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:14,358 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-01 00:41:14,358 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:14,358 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-01 00:41:14,359 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:14,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:14,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:14,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:14,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:14,954 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:14,954 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 [2018-10-01 00:41:14,962 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:15,049 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-01 00:41:15,049 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:15,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:15,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:15,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 00:41:15,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 00:41:15,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 00:41:15,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:15,362 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-01 00:41:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:15,786 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-01 00:41:15,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 00:41:15,787 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-01 00:41:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:15,787 INFO L225 Difference]: With dead ends: 175 [2018-10-01 00:41:15,787 INFO L226 Difference]: Without dead ends: 173 [2018-10-01 00:41:15,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:15,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-01 00:41:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-01 00:41:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-01 00:41:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-01 00:41:15,790 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-01 00:41:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:15,791 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-01 00:41:15,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 00:41:15,791 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-01 00:41:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-01 00:41:15,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:15,792 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-01 00:41:15,792 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:15,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:15,792 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-01 00:41:15,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:15,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:15,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:15,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:16,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:16,442 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 [2018-10-01 00:41:16,451 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:16,540 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 00:41:16,540 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:16,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:16,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:16,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 00:41:16,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 00:41:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 00:41:16,854 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:16,854 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-01 00:41:17,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:17,983 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 00:41:17,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 00:41:17,984 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-01 00:41:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:17,985 INFO L225 Difference]: With dead ends: 177 [2018-10-01 00:41:17,985 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 00:41:17,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 00:41:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 00:41:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 00:41:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 00:41:17,989 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-01 00:41:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:17,989 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 00:41:17,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 00:41:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 00:41:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 00:41:17,990 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:17,991 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-01 00:41:17,991 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:17,991 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-01 00:41:17,991 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:17,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:17,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:17,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:17,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:18,512 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:18,512 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:18,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:18,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:18,890 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:18,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 00:41:18,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 00:41:18,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 00:41:18,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:18,892 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-01 00:41:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:19,317 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-01 00:41:19,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 00:41:19,317 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-01 00:41:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:19,318 INFO L225 Difference]: With dead ends: 179 [2018-10-01 00:41:19,318 INFO L226 Difference]: Without dead ends: 177 [2018-10-01 00:41:19,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-01 00:41:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-01 00:41:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-01 00:41:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-01 00:41:19,322 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-01 00:41:19,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:19,322 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-01 00:41:19,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 00:41:19,322 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-01 00:41:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-01 00:41:19,323 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:19,323 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-01 00:41:19,323 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:19,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:19,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-01 00:41:19,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:19,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:19,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:19,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:19,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:19,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:19,854 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 [2018-10-01 00:41:19,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:19,906 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:19,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:19,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:20,238 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:20,238 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 00:41:20,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 00:41:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 00:41:20,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:20,240 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-01 00:41:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:20,785 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 00:41:20,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 00:41:20,785 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-01 00:41:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:20,786 INFO L225 Difference]: With dead ends: 181 [2018-10-01 00:41:20,786 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 00:41:20,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 00:41:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 00:41:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 00:41:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 00:41:20,789 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-01 00:41:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:20,789 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 00:41:20,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 00:41:20,789 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 00:41:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 00:41:20,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:20,790 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-01 00:41:20,790 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:20,790 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:20,790 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-01 00:41:20,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:20,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:20,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:20,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:20,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:21,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:21,490 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 [2018-10-01 00:41:21,497 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:21,595 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 00:41:21,595 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:21,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:21,915 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:21,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 00:41:21,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 00:41:21,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 00:41:21,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:21,917 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-01 00:41:22,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:22,382 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-01 00:41:22,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 00:41:22,382 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-01 00:41:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:22,383 INFO L225 Difference]: With dead ends: 183 [2018-10-01 00:41:22,383 INFO L226 Difference]: Without dead ends: 181 [2018-10-01 00:41:22,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:22,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-01 00:41:22,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-01 00:41:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-01 00:41:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-01 00:41:22,386 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-01 00:41:22,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:22,386 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-01 00:41:22,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 00:41:22,386 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-01 00:41:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-01 00:41:22,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:22,387 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-01 00:41:22,387 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:22,387 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:22,387 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-01 00:41:22,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:22,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:22,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:22,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:22,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,053 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:23,053 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 [2018-10-01 00:41:23,062 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:23,105 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:23,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:23,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:23,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:23,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 00:41:23,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 00:41:23,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 00:41:23,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:23,458 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-01 00:41:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:23,987 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 00:41:23,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 00:41:23,987 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-01 00:41:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:23,988 INFO L225 Difference]: With dead ends: 185 [2018-10-01 00:41:23,988 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 00:41:23,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 00:41:23,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 00:41:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 00:41:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 00:41:23,991 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-01 00:41:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:23,991 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 00:41:23,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 00:41:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 00:41:23,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 00:41:23,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:23,992 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-01 00:41:23,992 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:23,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:23,993 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-01 00:41:23,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:23,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:23,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:23,994 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:23,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:24,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:24,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:24,503 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:24,511 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:24,606 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-01 00:41:24,606 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:24,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:24,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:24,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 00:41:24,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 00:41:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 00:41:24,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:24,939 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-01 00:41:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:25,364 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-01 00:41:25,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 00:41:25,365 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-01 00:41:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:25,365 INFO L225 Difference]: With dead ends: 187 [2018-10-01 00:41:25,365 INFO L226 Difference]: Without dead ends: 185 [2018-10-01 00:41:25,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:25,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-01 00:41:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-01 00:41:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-01 00:41:25,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-01 00:41:25,368 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-01 00:41:25,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:25,369 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-01 00:41:25,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 00:41:25,369 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-01 00:41:25,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-01 00:41:25,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:25,370 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-01 00:41:25,370 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:25,370 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-01 00:41:25,370 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:25,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:25,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:25,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:25,905 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:25,905 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 [2018-10-01 00:41:25,913 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:26,008 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 00:41:26,009 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:26,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:26,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:26,536 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 00:41:26,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 00:41:26,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 00:41:26,537 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:26,538 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-01 00:41:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:27,022 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 00:41:27,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 00:41:27,022 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-01 00:41:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:27,023 INFO L225 Difference]: With dead ends: 189 [2018-10-01 00:41:27,023 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 00:41:27,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 00:41:27,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 00:41:27,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 00:41:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 00:41:27,027 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-01 00:41:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:27,028 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 00:41:27,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 00:41:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 00:41:27,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 00:41:27,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:27,029 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-01 00:41:27,029 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:27,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:27,029 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-01 00:41:27,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:27,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:27,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:27,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:27,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:27,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:27,675 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 [2018-10-01 00:41:27,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:27,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:28,052 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:28,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 00:41:28,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 00:41:28,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 00:41:28,054 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:28,054 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-01 00:41:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:28,513 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-01 00:41:28,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 00:41:28,513 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-01 00:41:28,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:28,514 INFO L225 Difference]: With dead ends: 191 [2018-10-01 00:41:28,514 INFO L226 Difference]: Without dead ends: 189 [2018-10-01 00:41:28,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-01 00:41:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-01 00:41:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-01 00:41:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-01 00:41:28,519 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-01 00:41:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:28,519 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-01 00:41:28,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 00:41:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-01 00:41:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-01 00:41:28,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:28,520 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-01 00:41:28,521 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:28,521 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:28,521 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-01 00:41:28,521 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:28,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:28,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:28,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:28,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:29,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:29,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:29,120 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 [2018-10-01 00:41:29,127 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:29,171 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:29,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:29,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:29,564 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:29,565 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 00:41:29,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 00:41:29,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 00:41:29,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:29,566 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-01 00:41:30,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:30,008 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 00:41:30,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 00:41:30,008 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-01 00:41:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:30,009 INFO L225 Difference]: With dead ends: 193 [2018-10-01 00:41:30,009 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 00:41:30,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:30,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 00:41:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 00:41:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 00:41:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 00:41:30,013 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-01 00:41:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:30,013 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 00:41:30,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 00:41:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 00:41:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 00:41:30,014 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:30,014 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-01 00:41:30,015 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:30,015 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:30,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-01 00:41:30,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:30,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:30,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:30,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:30,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:30,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:30,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:30,580 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 [2018-10-01 00:41:30,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:30,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-01 00:41:30,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:30,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:31,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:31,051 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:31,051 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 00:41:31,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 00:41:31,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 00:41:31,052 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:31,052 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-01 00:41:31,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:31,766 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-01 00:41:31,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 00:41:31,766 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-01 00:41:31,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:31,767 INFO L225 Difference]: With dead ends: 195 [2018-10-01 00:41:31,767 INFO L226 Difference]: Without dead ends: 193 [2018-10-01 00:41:31,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:31,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-01 00:41:31,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-01 00:41:31,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-01 00:41:31,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-01 00:41:31,771 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-01 00:41:31,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:31,771 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-01 00:41:31,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 00:41:31,771 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-01 00:41:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-01 00:41:31,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:31,772 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-01 00:41:31,772 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:31,772 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:31,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-01 00:41:31,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:31,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:31,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:31,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:31,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:32,320 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:32,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:32,321 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 [2018-10-01 00:41:32,328 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:32,374 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:32,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:32,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:32,713 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:32,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 00:41:32,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 00:41:32,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 00:41:32,715 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:32,715 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-01 00:41:33,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:33,279 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 00:41:33,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 00:41:33,280 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-01 00:41:33,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:33,281 INFO L225 Difference]: With dead ends: 197 [2018-10-01 00:41:33,281 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 00:41:33,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 00:41:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 00:41:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 00:41:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 00:41:33,284 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-01 00:41:33,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:33,284 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 00:41:33,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 00:41:33,284 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 00:41:33,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 00:41:33,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:33,285 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-01 00:41:33,285 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:33,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:33,286 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-01 00:41:33,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:33,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:33,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:33,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:33,860 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 [2018-10-01 00:41:33,868 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:33,981 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-01 00:41:33,981 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:33,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:34,345 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:34,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 00:41:34,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 00:41:34,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 00:41:34,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:34,346 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-01 00:41:34,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:34,924 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-01 00:41:34,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 00:41:34,925 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-01 00:41:34,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:34,926 INFO L225 Difference]: With dead ends: 199 [2018-10-01 00:41:34,926 INFO L226 Difference]: Without dead ends: 197 [2018-10-01 00:41:34,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-01 00:41:34,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-01 00:41:34,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-01 00:41:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-01 00:41:34,930 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-01 00:41:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:34,930 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-01 00:41:34,930 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 00:41:34,930 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-01 00:41:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-01 00:41:34,931 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:34,931 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-01 00:41:34,932 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:34,932 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:34,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-01 00:41:34,932 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:34,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:34,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:34,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:34,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:35,562 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:35,562 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:35,562 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 [2018-10-01 00:41:35,571 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:35,678 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 00:41:35,679 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:35,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:36,026 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:36,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 00:41:36,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 00:41:36,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 00:41:36,028 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:36,028 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-01 00:41:36,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:36,671 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 00:41:36,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 00:41:36,672 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-01 00:41:36,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:36,673 INFO L225 Difference]: With dead ends: 201 [2018-10-01 00:41:36,673 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 00:41:36,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 00:41:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 00:41:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 00:41:36,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 00:41:36,678 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-01 00:41:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:36,678 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 00:41:36,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 00:41:36,678 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 00:41:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 00:41:36,679 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:36,679 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-01 00:41:36,680 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:36,680 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-01 00:41:36,680 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:36,680 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:36,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:36,681 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:36,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:37,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:37,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:37,246 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 [2018-10-01 00:41:37,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:37,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:37,670 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:37,670 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 00:41:37,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 00:41:37,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 00:41:37,671 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:37,671 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-01 00:41:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:38,167 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-01 00:41:38,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 00:41:38,167 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-01 00:41:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:38,168 INFO L225 Difference]: With dead ends: 203 [2018-10-01 00:41:38,168 INFO L226 Difference]: Without dead ends: 201 [2018-10-01 00:41:38,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-01 00:41:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-01 00:41:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-01 00:41:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-01 00:41:38,172 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-01 00:41:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:38,172 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-01 00:41:38,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 00:41:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-01 00:41:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-01 00:41:38,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:38,173 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-01 00:41:38,173 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:38,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-01 00:41:38,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:38,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:38,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:38,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:38,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:38,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:38,756 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 [2018-10-01 00:41:38,764 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:38,814 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:38,814 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:38,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:39,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:39,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 00:41:39,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 00:41:39,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 00:41:39,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:39,184 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-01 00:41:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:39,755 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 00:41:39,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 00:41:39,755 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-01 00:41:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:39,756 INFO L225 Difference]: With dead ends: 205 [2018-10-01 00:41:39,756 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 00:41:39,756 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 00:41:39,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 00:41:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 00:41:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 00:41:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 00:41:39,759 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-01 00:41:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:39,760 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 00:41:39,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 00:41:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 00:41:39,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 00:41:39,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:39,761 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-01 00:41:39,761 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:39,761 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:39,761 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-01 00:41:39,761 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:39,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:39,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:39,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:39,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:40,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:40,442 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:40,442 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 [2018-10-01 00:41:40,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:40,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-01 00:41:40,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:40,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:40,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:40,956 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 00:41:40,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 00:41:40,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 00:41:40,957 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:40,957 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-01 00:41:41,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:41,478 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-01 00:41:41,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 00:41:41,479 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-01 00:41:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:41,480 INFO L225 Difference]: With dead ends: 207 [2018-10-01 00:41:41,480 INFO L226 Difference]: Without dead ends: 205 [2018-10-01 00:41:41,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-01 00:41:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-01 00:41:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-01 00:41:41,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-01 00:41:41,484 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-01 00:41:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:41,484 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-01 00:41:41,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 00:41:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-01 00:41:41,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-01 00:41:41,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:41,485 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-01 00:41:41,485 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:41,486 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:41,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-01 00:41:41,486 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:41,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:41,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:41,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:41,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:42,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:42,211 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 [2018-10-01 00:41:42,219 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:42,268 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:42,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:42,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:42,655 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:42,656 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 00:41:42,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 00:41:42,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 00:41:42,657 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:42,657 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-01 00:41:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:43,270 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 00:41:43,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 00:41:43,270 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-01 00:41:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:43,271 INFO L225 Difference]: With dead ends: 209 [2018-10-01 00:41:43,271 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 00:41:43,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:43,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 00:41:43,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 00:41:43,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 00:41:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 00:41:43,276 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-01 00:41:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:43,276 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 00:41:43,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 00:41:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 00:41:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 00:41:43,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:43,278 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-01 00:41:43,278 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:43,278 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:43,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-01 00:41:43,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:43,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:43,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:43,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:43,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:43,974 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:43,974 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 [2018-10-01 00:41:43,982 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:44,238 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-01 00:41:44,239 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:44,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:44,698 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:44,719 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:44,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 00:41:44,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 00:41:44,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 00:41:44,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:44,722 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-01 00:41:45,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:45,557 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-01 00:41:45,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 00:41:45,558 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-01 00:41:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:45,559 INFO L225 Difference]: With dead ends: 211 [2018-10-01 00:41:45,559 INFO L226 Difference]: Without dead ends: 209 [2018-10-01 00:41:45,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-01 00:41:45,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-01 00:41:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-01 00:41:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-01 00:41:45,562 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-01 00:41:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:45,562 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-01 00:41:45,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 00:41:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-01 00:41:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-01 00:41:45,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:45,563 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-01 00:41:45,564 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:45,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:45,564 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-01 00:41:45,564 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:45,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:45,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:45,565 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:45,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:46,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:46,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:46,288 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:46,408 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 00:41:46,408 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:46,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:46,990 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:47,010 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:47,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 00:41:47,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 00:41:47,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 00:41:47,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:47,012 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-01 00:41:47,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:47,644 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 00:41:47,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 00:41:47,645 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-01 00:41:47,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:47,645 INFO L225 Difference]: With dead ends: 213 [2018-10-01 00:41:47,645 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 00:41:47,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:41:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 00:41:47,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 00:41:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 00:41:47,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 00:41:47,650 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-01 00:41:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:47,651 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 00:41:47,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 00:41:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 00:41:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 00:41:47,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:47,652 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-01 00:41:47,652 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:47,652 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-01 00:41:47,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:47,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:47,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:47,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:47,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:48,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:48,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:48,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:48,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:48,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:48,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:48,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 00:41:48,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 00:41:48,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 00:41:48,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:48,752 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-01 00:41:49,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:49,370 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-01 00:41:49,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 00:41:49,370 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-01 00:41:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:49,371 INFO L225 Difference]: With dead ends: 215 [2018-10-01 00:41:49,371 INFO L226 Difference]: Without dead ends: 213 [2018-10-01 00:41:49,371 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:49,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-01 00:41:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-01 00:41:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-01 00:41:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-01 00:41:49,375 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-01 00:41:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:49,375 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-01 00:41:49,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 00:41:49,375 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-01 00:41:49,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-01 00:41:49,376 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:49,376 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-01 00:41:49,376 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:49,376 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:49,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-01 00:41:49,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:49,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:49,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:49,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:41:49,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:50,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:50,007 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 [2018-10-01 00:41:50,027 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:41:50,082 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:41:50,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:50,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:50,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:50,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 00:41:50,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 00:41:50,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 00:41:50,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:50,534 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-01 00:41:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:51,378 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 00:41:51,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 00:41:51,379 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-01 00:41:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:51,379 INFO L225 Difference]: With dead ends: 217 [2018-10-01 00:41:51,379 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 00:41:51,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:41:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 00:41:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 00:41:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 00:41:51,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 00:41:51,383 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-01 00:41:51,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:51,383 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 00:41:51,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 00:41:51,384 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 00:41:51,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 00:41:51,384 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:51,385 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-01 00:41:51,385 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:51,385 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:51,385 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-01 00:41:51,385 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:51,385 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:51,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:51,386 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:51,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:52,340 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:52,340 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 [2018-10-01 00:41:52,347 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:41:52,480 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-01 00:41:52,480 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:52,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:52,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:52,879 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 00:41:52,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 00:41:52,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 00:41:52,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:52,881 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-01 00:41:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:53,740 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-01 00:41:53,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 00:41:53,741 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-01 00:41:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:53,741 INFO L225 Difference]: With dead ends: 219 [2018-10-01 00:41:53,742 INFO L226 Difference]: Without dead ends: 217 [2018-10-01 00:41:53,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:41:53,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-01 00:41:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-01 00:41:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-01 00:41:53,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-01 00:41:53,746 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-01 00:41:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:53,746 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-01 00:41:53,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 00:41:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-01 00:41:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-01 00:41:53,747 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:53,747 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-01 00:41:53,747 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:53,748 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:53,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-01 00:41:53,748 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:53,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:53,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:53,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:53,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:54,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:54,438 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 [2018-10-01 00:41:54,445 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:41:54,500 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:41:54,500 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:54,503 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:54,910 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:54,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 00:41:54,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 00:41:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 00:41:54,911 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:54,912 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-01 00:41:55,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:55,889 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 00:41:55,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 00:41:55,889 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-01 00:41:55,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:55,890 INFO L225 Difference]: With dead ends: 221 [2018-10-01 00:41:55,890 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 00:41:55,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 00:41:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 00:41:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 00:41:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 00:41:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 00:41:55,894 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-01 00:41:55,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:55,894 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 00:41:55,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 00:41:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 00:41:55,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 00:41:55,895 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:55,895 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-01 00:41:55,895 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:55,895 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:55,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-01 00:41:55,895 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:55,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:55,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:55,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:55,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:56,607 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:56,607 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:41:56,615 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:41:56,760 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-01 00:41:56,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:56,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:57,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:57,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:57,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 00:41:57,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 00:41:57,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 00:41:57,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:57,291 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-01 00:41:57,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:41:57,841 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-01 00:41:57,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 00:41:57,842 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-01 00:41:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:41:57,842 INFO L225 Difference]: With dead ends: 223 [2018-10-01 00:41:57,842 INFO L226 Difference]: Without dead ends: 221 [2018-10-01 00:41:57,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:41:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-01 00:41:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-01 00:41:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-01 00:41:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-01 00:41:57,846 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-01 00:41:57,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:41:57,846 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-01 00:41:57,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 00:41:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-01 00:41:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-01 00:41:57,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:41:57,848 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-01 00:41:57,848 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:41:57,848 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:41:57,848 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-01 00:41:57,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:41:57,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:41:57,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:57,849 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:41:57,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:41:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:41:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:58,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:41:58,638 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 [2018-10-01 00:41:58,645 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:41:58,773 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 00:41:58,773 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:41:58,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:41:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:41:59,183 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:41:59,183 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 00:41:59,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 00:41:59,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 00:41:59,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:41:59,184 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-01 00:42:00,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:00,017 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 00:42:00,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 00:42:00,017 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-01 00:42:00,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:00,017 INFO L225 Difference]: With dead ends: 225 [2018-10-01 00:42:00,018 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 00:42:00,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 00:42:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 00:42:00,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 00:42:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 00:42:00,020 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-01 00:42:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:00,021 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 00:42:00,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 00:42:00,021 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 00:42:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 00:42:00,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:00,022 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-01 00:42:00,022 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:00,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-01 00:42:00,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:00,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:00,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:00,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:00,688 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:00,688 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 [2018-10-01 00:42:00,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:00,756 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:01,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:01,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 00:42:01,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 00:42:01,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 00:42:01,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:01,165 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-01 00:42:02,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:02,160 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-01 00:42:02,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 00:42:02,161 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-01 00:42:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:02,161 INFO L225 Difference]: With dead ends: 227 [2018-10-01 00:42:02,161 INFO L226 Difference]: Without dead ends: 225 [2018-10-01 00:42:02,161 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-01 00:42:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-01 00:42:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-01 00:42:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-01 00:42:02,165 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-01 00:42:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:02,165 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-01 00:42:02,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 00:42:02,165 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-01 00:42:02,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-01 00:42:02,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:02,166 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-01 00:42:02,166 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:02,167 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:02,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-01 00:42:02,167 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:02,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:02,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:02,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:02,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:02,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:02,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:02,907 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 [2018-10-01 00:42:02,915 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:02,971 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:02,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:02,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:03,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:03,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 00:42:03,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 00:42:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 00:42:03,398 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:03,398 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-10-01 00:42:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:04,498 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 00:42:04,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 00:42:04,499 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-10-01 00:42:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:04,499 INFO L225 Difference]: With dead ends: 229 [2018-10-01 00:42:04,499 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 00:42:04,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:04,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 00:42:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 00:42:04,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 00:42:04,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 00:42:04,503 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-10-01 00:42:04,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:04,503 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 00:42:04,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 00:42:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 00:42:04,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 00:42:04,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:04,504 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-10-01 00:42:04,505 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:04,505 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:04,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-10-01 00:42:04,505 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:04,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:04,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:04,506 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:04,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:05,245 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:05,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:05,245 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 [2018-10-01 00:42:05,252 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:05,396 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-01 00:42:05,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:05,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:05,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:05,802 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 00:42:05,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 00:42:05,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 00:42:05,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:05,803 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-10-01 00:42:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:06,727 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-01 00:42:06,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 00:42:06,727 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-10-01 00:42:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:06,728 INFO L225 Difference]: With dead ends: 231 [2018-10-01 00:42:06,728 INFO L226 Difference]: Without dead ends: 229 [2018-10-01 00:42:06,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-01 00:42:06,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-01 00:42:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-01 00:42:06,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-01 00:42:06,731 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-10-01 00:42:06,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:06,731 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-01 00:42:06,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 00:42:06,731 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-01 00:42:06,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-01 00:42:06,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:06,732 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-10-01 00:42:06,732 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:06,732 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:06,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-10-01 00:42:06,732 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:06,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:06,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:06,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:06,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:07,645 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:07,645 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 00:42:07,653 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:07,709 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:07,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:07,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 12656 backedges. 0 proven. 12656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:08,133 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:08,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 00:42:08,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 00:42:08,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 00:42:08,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:08,135 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand 115 states. [2018-10-01 00:42:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:08,956 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 00:42:08,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 00:42:08,956 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 228 [2018-10-01 00:42:08,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:08,957 INFO L225 Difference]: With dead ends: 233 [2018-10-01 00:42:08,957 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 00:42:08,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 00:42:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 00:42:08,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 00:42:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 00:42:08,960 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 228 [2018-10-01 00:42:08,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:08,960 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 00:42:08,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 00:42:08,960 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 00:42:08,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 00:42:08,960 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:08,961 INFO L375 BasicCegarLoop]: trace histogram [114, 113, 1, 1, 1] [2018-10-01 00:42:08,961 INFO L423 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:08,961 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash 484174561, now seen corresponding path program 113 times [2018-10-01 00:42:08,961 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:08,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:08,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:08,962 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:08,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:09,749 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:09,749 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 [2018-10-01 00:42:09,756 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:09,938 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-01 00:42:09,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:09,942 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12882 backedges. 0 proven. 12882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:10,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:10,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 00:42:10,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 00:42:10,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 00:42:10,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:10,484 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 116 states. [2018-10-01 00:42:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:11,374 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-10-01 00:42:11,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 00:42:11,374 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 230 [2018-10-01 00:42:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:11,375 INFO L225 Difference]: With dead ends: 235 [2018-10-01 00:42:11,375 INFO L226 Difference]: Without dead ends: 233 [2018-10-01 00:42:11,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2018-10-01 00:42:11,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2018-10-01 00:42:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-10-01 00:42:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 233 transitions. [2018-10-01 00:42:11,378 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 233 transitions. Word has length 230 [2018-10-01 00:42:11,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:11,379 INFO L480 AbstractCegarLoop]: Abstraction has 233 states and 233 transitions. [2018-10-01 00:42:11,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 00:42:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 233 transitions. [2018-10-01 00:42:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-01 00:42:11,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:11,380 INFO L375 BasicCegarLoop]: trace histogram [115, 114, 1, 1, 1] [2018-10-01 00:42:11,380 INFO L423 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:11,380 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:11,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1435337243, now seen corresponding path program 114 times [2018-10-01 00:42:11,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:11,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:11,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:11,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:11,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:12,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:12,092 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:12,092 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:12,099 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:12,276 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 00:42:12,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:12,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13110 backedges. 0 proven. 13110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:12,776 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:12,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 00:42:12,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 00:42:12,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 00:42:12,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:12,778 INFO L87 Difference]: Start difference. First operand 233 states and 233 transitions. Second operand 117 states. [2018-10-01 00:42:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:13,814 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 00:42:13,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 00:42:13,814 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 232 [2018-10-01 00:42:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:13,814 INFO L225 Difference]: With dead ends: 237 [2018-10-01 00:42:13,815 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 00:42:13,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:13,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 00:42:13,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 00:42:13,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 00:42:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 00:42:13,817 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 232 [2018-10-01 00:42:13,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:13,818 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 00:42:13,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 00:42:13,818 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 00:42:13,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 00:42:13,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:13,819 INFO L375 BasicCegarLoop]: trace histogram [116, 115, 1, 1, 1] [2018-10-01 00:42:13,819 INFO L423 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:13,819 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:13,819 INFO L82 PathProgramCache]: Analyzing trace with hash 674640597, now seen corresponding path program 115 times [2018-10-01 00:42:13,819 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:13,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:13,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:13,820 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:13,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:14,556 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:14,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:14,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:14,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13340 backedges. 0 proven. 13340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:15,085 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:15,085 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 00:42:15,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 00:42:15,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 00:42:15,086 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:15,086 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 118 states. [2018-10-01 00:42:15,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:15,949 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2018-10-01 00:42:15,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 00:42:15,949 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 234 [2018-10-01 00:42:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:15,950 INFO L225 Difference]: With dead ends: 239 [2018-10-01 00:42:15,950 INFO L226 Difference]: Without dead ends: 237 [2018-10-01 00:42:15,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-10-01 00:42:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2018-10-01 00:42:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-01 00:42:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2018-10-01 00:42:15,953 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 234 [2018-10-01 00:42:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:15,954 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2018-10-01 00:42:15,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 00:42:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2018-10-01 00:42:15,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-01 00:42:15,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:15,955 INFO L375 BasicCegarLoop]: trace histogram [117, 116, 1, 1, 1] [2018-10-01 00:42:15,955 INFO L423 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:15,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash -210395889, now seen corresponding path program 116 times [2018-10-01 00:42:15,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:15,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:15,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:15,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:15,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:16,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:16,661 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:16,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:16,724 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:16,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:16,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13572 backedges. 0 proven. 13572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:17,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:17,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 00:42:17,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 00:42:17,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 00:42:17,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:17,189 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand 119 states. [2018-10-01 00:42:18,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:18,417 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 00:42:18,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 00:42:18,418 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 236 [2018-10-01 00:42:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:18,418 INFO L225 Difference]: With dead ends: 241 [2018-10-01 00:42:18,418 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 00:42:18,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 00:42:18,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 00:42:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 00:42:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 00:42:18,422 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 236 [2018-10-01 00:42:18,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:18,422 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 00:42:18,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 00:42:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 00:42:18,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 00:42:18,422 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:18,423 INFO L375 BasicCegarLoop]: trace histogram [118, 117, 1, 1, 1] [2018-10-01 00:42:18,423 INFO L423 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:18,423 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:18,423 INFO L82 PathProgramCache]: Analyzing trace with hash -326934327, now seen corresponding path program 117 times [2018-10-01 00:42:18,423 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:18,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:18,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:18,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:18,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:19,151 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:19,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:19,151 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:19,159 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:19,337 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-10-01 00:42:19,337 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:19,341 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 13806 backedges. 0 proven. 13806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:19,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:19,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 00:42:19,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 00:42:19,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 00:42:19,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:19,793 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 120 states. [2018-10-01 00:42:20,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:20,479 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2018-10-01 00:42:20,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 00:42:20,479 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 238 [2018-10-01 00:42:20,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:20,479 INFO L225 Difference]: With dead ends: 243 [2018-10-01 00:42:20,480 INFO L226 Difference]: Without dead ends: 241 [2018-10-01 00:42:20,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:20,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2018-10-01 00:42:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2018-10-01 00:42:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-01 00:42:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 241 transitions. [2018-10-01 00:42:20,483 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 241 transitions. Word has length 238 [2018-10-01 00:42:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:20,483 INFO L480 AbstractCegarLoop]: Abstraction has 241 states and 241 transitions. [2018-10-01 00:42:20,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 00:42:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 241 transitions. [2018-10-01 00:42:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-01 00:42:20,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:20,484 INFO L375 BasicCegarLoop]: trace histogram [119, 118, 1, 1, 1] [2018-10-01 00:42:20,484 INFO L423 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:20,484 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash -651223549, now seen corresponding path program 118 times [2018-10-01 00:42:20,484 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:20,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:20,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:20,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:20,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:21,236 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:21,237 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:21,244 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:21,305 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:21,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:21,309 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14042 backedges. 0 proven. 14042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:21,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:21,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 00:42:21,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 00:42:21,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 00:42:21,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:21,781 INFO L87 Difference]: Start difference. First operand 241 states and 241 transitions. Second operand 121 states. [2018-10-01 00:42:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:22,859 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 00:42:22,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 00:42:22,860 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 240 [2018-10-01 00:42:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:22,860 INFO L225 Difference]: With dead ends: 245 [2018-10-01 00:42:22,860 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 00:42:22,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 00:42:22,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 00:42:22,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 00:42:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 00:42:22,864 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 240 [2018-10-01 00:42:22,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:22,864 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 00:42:22,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 00:42:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 00:42:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 00:42:22,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:22,865 INFO L375 BasicCegarLoop]: trace histogram [120, 119, 1, 1, 1] [2018-10-01 00:42:22,865 INFO L423 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:22,865 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1239446717, now seen corresponding path program 119 times [2018-10-01 00:42:22,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:22,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:22,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:22,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:22,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:23,729 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:23,729 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:23,737 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:23,885 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-10-01 00:42:23,886 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:23,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 14280 backedges. 0 proven. 14280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:24,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:24,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 00:42:24,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 00:42:24,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 00:42:24,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:24,330 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 122 states. [2018-10-01 00:42:25,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:25,033 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2018-10-01 00:42:25,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 00:42:25,033 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 242 [2018-10-01 00:42:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:25,034 INFO L225 Difference]: With dead ends: 247 [2018-10-01 00:42:25,034 INFO L226 Difference]: Without dead ends: 245 [2018-10-01 00:42:25,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-10-01 00:42:25,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2018-10-01 00:42:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-10-01 00:42:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 245 transitions. [2018-10-01 00:42:25,037 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 245 transitions. Word has length 242 [2018-10-01 00:42:25,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:25,038 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 245 transitions. [2018-10-01 00:42:25,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 00:42:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 245 transitions. [2018-10-01 00:42:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-01 00:42:25,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:25,039 INFO L375 BasicCegarLoop]: trace histogram [121, 120, 1, 1, 1] [2018-10-01 00:42:25,039 INFO L423 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:25,039 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1402406135, now seen corresponding path program 120 times [2018-10-01 00:42:25,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:25,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:25,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:25,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:25,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:25,826 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:25,826 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:25,835 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:25,982 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 00:42:25,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:25,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:26,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14520 backedges. 0 proven. 14520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:26,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:26,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 00:42:26,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 00:42:26,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 00:42:26,442 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:26,442 INFO L87 Difference]: Start difference. First operand 245 states and 245 transitions. Second operand 123 states. [2018-10-01 00:42:27,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:27,527 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 00:42:27,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 00:42:27,528 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 244 [2018-10-01 00:42:27,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:27,528 INFO L225 Difference]: With dead ends: 249 [2018-10-01 00:42:27,528 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 00:42:27,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 00:42:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 00:42:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 00:42:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 00:42:27,531 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 244 [2018-10-01 00:42:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:27,532 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 00:42:27,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 00:42:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 00:42:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 00:42:27,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:27,533 INFO L375 BasicCegarLoop]: trace histogram [122, 121, 1, 1, 1] [2018-10-01 00:42:27,533 INFO L423 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:27,533 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -907383119, now seen corresponding path program 121 times [2018-10-01 00:42:27,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:27,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:27,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:27,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:27,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:28,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:28,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:28,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:28,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14762 backedges. 0 proven. 14762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:28,958 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:28,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 00:42:28,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 00:42:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 00:42:28,960 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:28,960 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 124 states. [2018-10-01 00:42:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:29,716 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2018-10-01 00:42:29,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 00:42:29,717 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 246 [2018-10-01 00:42:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:29,717 INFO L225 Difference]: With dead ends: 251 [2018-10-01 00:42:29,717 INFO L226 Difference]: Without dead ends: 249 [2018-10-01 00:42:29,718 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-10-01 00:42:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2018-10-01 00:42:29,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-10-01 00:42:29,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2018-10-01 00:42:29,721 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 246 [2018-10-01 00:42:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:29,721 INFO L480 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2018-10-01 00:42:29,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 00:42:29,721 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2018-10-01 00:42:29,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-01 00:42:29,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:29,722 INFO L375 BasicCegarLoop]: trace histogram [123, 122, 1, 1, 1] [2018-10-01 00:42:29,722 INFO L423 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:29,722 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:29,722 INFO L82 PathProgramCache]: Analyzing trace with hash -116764181, now seen corresponding path program 122 times [2018-10-01 00:42:29,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:29,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:29,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:29,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:29,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:30,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:30,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:30,478 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:30,538 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:30,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:30,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15006 backedges. 0 proven. 15006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:31,002 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:31,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 00:42:31,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 00:42:31,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 00:42:31,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:31,004 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand 125 states. [2018-10-01 00:42:32,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:32,199 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 00:42:32,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 00:42:32,200 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 248 [2018-10-01 00:42:32,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:32,200 INFO L225 Difference]: With dead ends: 253 [2018-10-01 00:42:32,200 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 00:42:32,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 00:42:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 00:42:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 00:42:32,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 00:42:32,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 00:42:32,204 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 248 [2018-10-01 00:42:32,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:32,204 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 00:42:32,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 00:42:32,204 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 00:42:32,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 00:42:32,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:32,205 INFO L375 BasicCegarLoop]: trace histogram [124, 123, 1, 1, 1] [2018-10-01 00:42:32,205 INFO L423 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:32,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:32,205 INFO L82 PathProgramCache]: Analyzing trace with hash -541176155, now seen corresponding path program 123 times [2018-10-01 00:42:32,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:32,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:32,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:32,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:32,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:33,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:33,206 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:33,206 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:33,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:33,382 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2018-10-01 00:42:33,382 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:33,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15252 backedges. 0 proven. 15252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:33,866 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:33,866 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 00:42:33,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 00:42:33,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 00:42:33,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:33,868 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 126 states. [2018-10-01 00:42:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:34,936 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-01 00:42:34,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 00:42:34,936 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 250 [2018-10-01 00:42:34,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:34,937 INFO L225 Difference]: With dead ends: 255 [2018-10-01 00:42:34,937 INFO L226 Difference]: Without dead ends: 253 [2018-10-01 00:42:34,937 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:34,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-10-01 00:42:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2018-10-01 00:42:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2018-10-01 00:42:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2018-10-01 00:42:34,941 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 250 [2018-10-01 00:42:34,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:34,941 INFO L480 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2018-10-01 00:42:34,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 00:42:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2018-10-01 00:42:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-10-01 00:42:34,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:34,942 INFO L375 BasicCegarLoop]: trace histogram [125, 124, 1, 1, 1] [2018-10-01 00:42:34,942 INFO L423 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:34,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:34,942 INFO L82 PathProgramCache]: Analyzing trace with hash -379190049, now seen corresponding path program 124 times [2018-10-01 00:42:34,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:34,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:34,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:34,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:34,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:35,757 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:35,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:35,765 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:35,834 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:35,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:35,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 15500 backedges. 0 proven. 15500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:36,338 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:36,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 00:42:36,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 00:42:36,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 00:42:36,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:36,340 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand 127 states. [2018-10-01 00:42:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:37,631 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 00:42:37,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 00:42:37,631 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 252 [2018-10-01 00:42:37,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:37,632 INFO L225 Difference]: With dead ends: 257 [2018-10-01 00:42:37,632 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 00:42:37,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 00:42:37,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 00:42:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 00:42:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 00:42:37,635 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 252 [2018-10-01 00:42:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:37,635 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 00:42:37,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 00:42:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 00:42:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 00:42:37,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:37,636 INFO L375 BasicCegarLoop]: trace histogram [126, 125, 1, 1, 1] [2018-10-01 00:42:37,636 INFO L423 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:37,637 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:37,637 INFO L82 PathProgramCache]: Analyzing trace with hash 670635161, now seen corresponding path program 125 times [2018-10-01 00:42:37,637 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:37,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:37,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:37,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:37,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:38,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:38,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:38,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:38,676 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:38,848 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2018-10-01 00:42:38,849 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:38,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15750 backedges. 0 proven. 15750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:39,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:39,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 00:42:39,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 00:42:39,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 00:42:39,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:39,301 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 128 states. [2018-10-01 00:42:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:40,453 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2018-10-01 00:42:40,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 00:42:40,453 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 254 [2018-10-01 00:42:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:40,454 INFO L225 Difference]: With dead ends: 259 [2018-10-01 00:42:40,454 INFO L226 Difference]: Without dead ends: 257 [2018-10-01 00:42:40,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:42:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-01 00:42:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2018-10-01 00:42:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-10-01 00:42:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2018-10-01 00:42:40,458 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 254 [2018-10-01 00:42:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:40,458 INFO L480 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2018-10-01 00:42:40,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 00:42:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2018-10-01 00:42:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-01 00:42:40,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:40,459 INFO L375 BasicCegarLoop]: trace histogram [127, 126, 1, 1, 1] [2018-10-01 00:42:40,459 INFO L423 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:40,460 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash 235347411, now seen corresponding path program 126 times [2018-10-01 00:42:40,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:40,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:40,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:40,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:40,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:41,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,320 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:41,320 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:41,328 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:41,502 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 00:42:41,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:41,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16002 backedges. 0 proven. 16002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:41,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:41,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 00:42:41,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 00:42:41,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 00:42:41,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:41,973 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 129 states. [2018-10-01 00:42:43,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:43,168 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 00:42:43,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 00:42:43,168 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 256 [2018-10-01 00:42:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:43,169 INFO L225 Difference]: With dead ends: 261 [2018-10-01 00:42:43,169 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 00:42:43,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:43,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 00:42:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 00:42:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 00:42:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-01 00:42:43,173 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 256 [2018-10-01 00:42:43,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:43,174 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-01 00:42:43,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 00:42:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-01 00:42:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 00:42:43,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:43,175 INFO L375 BasicCegarLoop]: trace histogram [128, 127, 1, 1, 1] [2018-10-01 00:42:43,175 INFO L423 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:43,176 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:43,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1464352627, now seen corresponding path program 127 times [2018-10-01 00:42:43,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:43,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:43,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:43,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:43,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:44,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:44,029 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:44,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:44,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:44,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16256 backedges. 0 proven. 16256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:44,585 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:44,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 00:42:44,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 00:42:44,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 00:42:44,588 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:44,588 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 130 states. [2018-10-01 00:42:45,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:45,947 INFO L93 Difference]: Finished difference Result 263 states and 263 transitions. [2018-10-01 00:42:45,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 00:42:45,948 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 258 [2018-10-01 00:42:45,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:45,949 INFO L225 Difference]: With dead ends: 263 [2018-10-01 00:42:45,949 INFO L226 Difference]: Without dead ends: 261 [2018-10-01 00:42:45,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:45,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-10-01 00:42:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2018-10-01 00:42:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2018-10-01 00:42:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 261 transitions. [2018-10-01 00:42:45,953 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 261 transitions. Word has length 258 [2018-10-01 00:42:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:45,953 INFO L480 AbstractCegarLoop]: Abstraction has 261 states and 261 transitions. [2018-10-01 00:42:45,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 00:42:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 261 transitions. [2018-10-01 00:42:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-01 00:42:45,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:45,955 INFO L375 BasicCegarLoop]: trace histogram [129, 128, 1, 1, 1] [2018-10-01 00:42:45,955 INFO L423 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:45,955 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:45,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1506450631, now seen corresponding path program 128 times [2018-10-01 00:42:45,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:45,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:45,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:45,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:42:45,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:46,828 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:46,828 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:46,839 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:42:46,904 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:42:46,904 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:46,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16512 backedges. 0 proven. 16512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:47,397 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:47,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 00:42:47,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 00:42:47,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 00:42:47,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:47,400 INFO L87 Difference]: Start difference. First operand 261 states and 261 transitions. Second operand 131 states. [2018-10-01 00:42:48,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:48,723 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 00:42:48,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 00:42:48,723 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 260 [2018-10-01 00:42:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:48,724 INFO L225 Difference]: With dead ends: 265 [2018-10-01 00:42:48,724 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 00:42:48,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:48,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 00:42:48,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-01 00:42:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 00:42:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-01 00:42:48,728 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 260 [2018-10-01 00:42:48,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:48,728 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-01 00:42:48,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 00:42:48,728 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-01 00:42:48,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 00:42:48,729 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:48,730 INFO L375 BasicCegarLoop]: trace histogram [130, 129, 1, 1, 1] [2018-10-01 00:42:48,730 INFO L423 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:48,730 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:48,730 INFO L82 PathProgramCache]: Analyzing trace with hash 295129729, now seen corresponding path program 129 times [2018-10-01 00:42:48,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:48,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:48,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:48,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:48,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:49,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:49,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:49,616 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:49,623 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:42:49,807 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2018-10-01 00:42:49,807 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:49,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:50,267 INFO L134 CoverageAnalysis]: Checked inductivity of 16770 backedges. 0 proven. 16770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:50,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:50,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 00:42:50,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 00:42:50,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 00:42:50,292 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:50,292 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 132 states. [2018-10-01 00:42:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:51,534 INFO L93 Difference]: Finished difference Result 267 states and 267 transitions. [2018-10-01 00:42:51,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 00:42:51,534 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 262 [2018-10-01 00:42:51,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:51,535 INFO L225 Difference]: With dead ends: 267 [2018-10-01 00:42:51,535 INFO L226 Difference]: Without dead ends: 265 [2018-10-01 00:42:51,535 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-01 00:42:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2018-10-01 00:42:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-10-01 00:42:51,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 265 transitions. [2018-10-01 00:42:51,538 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 265 transitions. Word has length 262 [2018-10-01 00:42:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:51,539 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 265 transitions. [2018-10-01 00:42:51,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 00:42:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 265 transitions. [2018-10-01 00:42:51,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2018-10-01 00:42:51,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:51,539 INFO L375 BasicCegarLoop]: trace histogram [131, 130, 1, 1, 1] [2018-10-01 00:42:51,540 INFO L423 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:51,540 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:51,540 INFO L82 PathProgramCache]: Analyzing trace with hash 151880123, now seen corresponding path program 130 times [2018-10-01 00:42:51,540 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:51,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:51,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:51,541 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:51,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:52,414 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:52,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:52,422 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:42:52,484 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:42:52,485 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:52,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 17030 backedges. 0 proven. 17030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:52,991 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:52,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 00:42:52,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 00:42:52,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 00:42:52,993 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:52,993 INFO L87 Difference]: Start difference. First operand 265 states and 265 transitions. Second operand 133 states. [2018-10-01 00:42:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:54,390 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-01 00:42:54,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 00:42:54,391 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 264 [2018-10-01 00:42:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:54,391 INFO L225 Difference]: With dead ends: 269 [2018-10-01 00:42:54,391 INFO L226 Difference]: Without dead ends: 267 [2018-10-01 00:42:54,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-01 00:42:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-01 00:42:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-01 00:42:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-01 00:42:54,394 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 264 [2018-10-01 00:42:54,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:54,395 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-01 00:42:54,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 00:42:54,395 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-01 00:42:54,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-01 00:42:54,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:54,396 INFO L375 BasicCegarLoop]: trace histogram [132, 131, 1, 1, 1] [2018-10-01 00:42:54,396 INFO L423 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:54,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:54,396 INFO L82 PathProgramCache]: Analyzing trace with hash -72037771, now seen corresponding path program 131 times [2018-10-01 00:42:54,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:54,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:54,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:54,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:54,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:55,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:55,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:55,254 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:42:55,423 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 132 check-sat command(s) [2018-10-01 00:42:55,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:55,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 17292 backedges. 0 proven. 17292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:55,912 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:55,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 00:42:55,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 00:42:55,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 00:42:55,914 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:55,915 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 134 states. [2018-10-01 00:42:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:56,743 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2018-10-01 00:42:56,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 00:42:56,743 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 266 [2018-10-01 00:42:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:56,744 INFO L225 Difference]: With dead ends: 271 [2018-10-01 00:42:56,744 INFO L226 Difference]: Without dead ends: 269 [2018-10-01 00:42:56,744 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:42:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-10-01 00:42:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2018-10-01 00:42:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-01 00:42:56,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2018-10-01 00:42:56,747 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 266 [2018-10-01 00:42:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:56,748 INFO L480 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2018-10-01 00:42:56,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 00:42:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2018-10-01 00:42:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-10-01 00:42:56,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:56,749 INFO L375 BasicCegarLoop]: trace histogram [133, 132, 1, 1, 1] [2018-10-01 00:42:56,749 INFO L423 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:56,749 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:56,749 INFO L82 PathProgramCache]: Analyzing trace with hash -508769105, now seen corresponding path program 132 times [2018-10-01 00:42:56,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:56,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:56,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:56,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:56,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:42:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:57,624 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:42:57,625 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:42:57,631 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:42:57,819 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 133 check-sat command(s) [2018-10-01 00:42:57,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:42:57,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:42:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17556 backedges. 0 proven. 17556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:42:58,408 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:42:58,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 00:42:58,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 00:42:58,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 00:42:58,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:42:58,410 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand 135 states. [2018-10-01 00:42:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:42:59,867 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-01 00:42:59,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 00:42:59,867 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 268 [2018-10-01 00:42:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:42:59,868 INFO L225 Difference]: With dead ends: 273 [2018-10-01 00:42:59,868 INFO L226 Difference]: Without dead ends: 271 [2018-10-01 00:42:59,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:42:59,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-01 00:42:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-01 00:42:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-01 00:42:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-01 00:42:59,872 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 268 [2018-10-01 00:42:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:42:59,872 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-01 00:42:59,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 00:42:59,872 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-01 00:42:59,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-01 00:42:59,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:42:59,873 INFO L375 BasicCegarLoop]: trace histogram [134, 133, 1, 1, 1] [2018-10-01 00:42:59,873 INFO L423 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:42:59,873 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:42:59,873 INFO L82 PathProgramCache]: Analyzing trace with hash 699213929, now seen corresponding path program 133 times [2018-10-01 00:42:59,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:42:59,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:42:59,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:59,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:42:59,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:42:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:00,739 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:00,739 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:00,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:00,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 17822 backedges. 0 proven. 17822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:01,317 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:01,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 00:43:01,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 00:43:01,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 00:43:01,319 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:01,319 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 136 states. [2018-10-01 00:43:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:02,427 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2018-10-01 00:43:02,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 00:43:02,428 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 270 [2018-10-01 00:43:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:02,428 INFO L225 Difference]: With dead ends: 275 [2018-10-01 00:43:02,428 INFO L226 Difference]: Without dead ends: 273 [2018-10-01 00:43:02,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 00:43:02,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2018-10-01 00:43:02,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2018-10-01 00:43:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2018-10-01 00:43:02,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2018-10-01 00:43:02,432 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 270 [2018-10-01 00:43:02,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:02,432 INFO L480 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2018-10-01 00:43:02,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 00:43:02,432 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2018-10-01 00:43:02,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-10-01 00:43:02,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:02,433 INFO L375 BasicCegarLoop]: trace histogram [135, 134, 1, 1, 1] [2018-10-01 00:43:02,433 INFO L423 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:02,433 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:02,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1929739683, now seen corresponding path program 134 times [2018-10-01 00:43:02,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:02,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:02,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:03,360 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:03,360 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:03,367 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:03,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:03,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:03,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:04,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18090 backedges. 0 proven. 18090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:04,106 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:04,107 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 00:43:04,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 00:43:04,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 00:43:04,108 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:04,108 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand 137 states. [2018-10-01 00:43:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:05,669 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-01 00:43:05,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 00:43:05,669 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 272 [2018-10-01 00:43:05,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:05,670 INFO L225 Difference]: With dead ends: 277 [2018-10-01 00:43:05,670 INFO L226 Difference]: Without dead ends: 275 [2018-10-01 00:43:05,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:05,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-01 00:43:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-01 00:43:05,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-01 00:43:05,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-01 00:43:05,675 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 272 [2018-10-01 00:43:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:05,675 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-01 00:43:05,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 00:43:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-01 00:43:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-01 00:43:05,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:05,677 INFO L375 BasicCegarLoop]: trace histogram [136, 135, 1, 1, 1] [2018-10-01 00:43:05,677 INFO L423 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:05,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:05,677 INFO L82 PathProgramCache]: Analyzing trace with hash -945984419, now seen corresponding path program 135 times [2018-10-01 00:43:05,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:05,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:05,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:05,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:05,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:06,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:06,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:06,671 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:06,882 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 136 check-sat command(s) [2018-10-01 00:43:06,882 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:06,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 18360 backedges. 0 proven. 18360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:07,420 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:07,420 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 00:43:07,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 00:43:07,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 00:43:07,421 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:07,422 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 138 states. [2018-10-01 00:43:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:08,391 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2018-10-01 00:43:08,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 00:43:08,392 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 274 [2018-10-01 00:43:08,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:08,393 INFO L225 Difference]: With dead ends: 279 [2018-10-01 00:43:08,393 INFO L226 Difference]: Without dead ends: 277 [2018-10-01 00:43:08,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:43:08,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2018-10-01 00:43:08,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2018-10-01 00:43:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-01 00:43:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2018-10-01 00:43:08,396 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 274 [2018-10-01 00:43:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:08,397 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2018-10-01 00:43:08,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 00:43:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2018-10-01 00:43:08,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-01 00:43:08,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:08,398 INFO L375 BasicCegarLoop]: trace histogram [137, 136, 1, 1, 1] [2018-10-01 00:43:08,398 INFO L423 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:08,398 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:08,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1442092183, now seen corresponding path program 136 times [2018-10-01 00:43:08,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:08,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:08,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:08,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:08,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:09,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:09,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:09,527 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:09,592 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:09,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:09,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 18632 backedges. 0 proven. 18632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:10,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:10,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 00:43:10,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 00:43:10,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 00:43:10,113 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:10,113 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand 139 states. [2018-10-01 00:43:11,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:11,533 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-01 00:43:11,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 00:43:11,533 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 276 [2018-10-01 00:43:11,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:11,534 INFO L225 Difference]: With dead ends: 281 [2018-10-01 00:43:11,534 INFO L226 Difference]: Without dead ends: 279 [2018-10-01 00:43:11,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-01 00:43:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-01 00:43:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-01 00:43:11,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-10-01 00:43:11,537 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 276 [2018-10-01 00:43:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:11,538 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-10-01 00:43:11,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 00:43:11,538 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-10-01 00:43:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 00:43:11,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:11,538 INFO L375 BasicCegarLoop]: trace histogram [138, 137, 1, 1, 1] [2018-10-01 00:43:11,539 INFO L423 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:11,539 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:11,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1423796655, now seen corresponding path program 137 times [2018-10-01 00:43:11,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:11,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:11,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:11,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:11,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:12,450 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:12,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:12,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:12,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:12,634 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2018-10-01 00:43:12,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:12,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:13,168 INFO L134 CoverageAnalysis]: Checked inductivity of 18906 backedges. 0 proven. 18906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:13,188 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:13,188 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 00:43:13,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 00:43:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 00:43:13,190 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:13,190 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 140 states. [2018-10-01 00:43:14,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:14,837 INFO L93 Difference]: Finished difference Result 283 states and 283 transitions. [2018-10-01 00:43:14,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 00:43:14,837 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 278 [2018-10-01 00:43:14,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:14,838 INFO L225 Difference]: With dead ends: 283 [2018-10-01 00:43:14,838 INFO L226 Difference]: Without dead ends: 281 [2018-10-01 00:43:14,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:43:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-10-01 00:43:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2018-10-01 00:43:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2018-10-01 00:43:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2018-10-01 00:43:14,842 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 278 [2018-10-01 00:43:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:14,842 INFO L480 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2018-10-01 00:43:14,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 00:43:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2018-10-01 00:43:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-01 00:43:14,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:14,843 INFO L375 BasicCegarLoop]: trace histogram [139, 138, 1, 1, 1] [2018-10-01 00:43:14,843 INFO L423 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:14,843 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:14,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1826034059, now seen corresponding path program 138 times [2018-10-01 00:43:14,843 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:14,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:14,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:14,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:14,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:15,769 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:15,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:15,769 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:15,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:15,958 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2018-10-01 00:43:15,959 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:15,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 19182 backedges. 0 proven. 19182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:16,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:16,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 00:43:16,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 00:43:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 00:43:16,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:16,499 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand 141 states. [2018-10-01 00:43:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:17,795 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-01 00:43:17,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 00:43:17,795 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 280 [2018-10-01 00:43:17,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:17,796 INFO L225 Difference]: With dead ends: 285 [2018-10-01 00:43:17,796 INFO L226 Difference]: Without dead ends: 283 [2018-10-01 00:43:17,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 00:43:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-01 00:43:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-01 00:43:17,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-01 00:43:17,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-01 00:43:17,800 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 280 [2018-10-01 00:43:17,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:17,800 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-01 00:43:17,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 00:43:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-01 00:43:17,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-01 00:43:17,801 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:17,801 INFO L375 BasicCegarLoop]: trace histogram [140, 139, 1, 1, 1] [2018-10-01 00:43:17,801 INFO L423 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:17,801 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:17,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1822841275, now seen corresponding path program 139 times [2018-10-01 00:43:17,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:17,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:17,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:17,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:17,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:18,818 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:18,818 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:18,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:18,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19460 backedges. 0 proven. 19460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:19,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:19,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 00:43:19,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 00:43:19,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 00:43:19,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:19,535 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 142 states. [2018-10-01 00:43:20,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:20,495 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2018-10-01 00:43:20,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 00:43:20,496 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 282 [2018-10-01 00:43:20,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:20,496 INFO L225 Difference]: With dead ends: 287 [2018-10-01 00:43:20,497 INFO L226 Difference]: Without dead ends: 285 [2018-10-01 00:43:20,497 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2018-10-01 00:43:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2018-10-01 00:43:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2018-10-01 00:43:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2018-10-01 00:43:20,500 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 282 [2018-10-01 00:43:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:20,500 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2018-10-01 00:43:20,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 00:43:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2018-10-01 00:43:20,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-01 00:43:20,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:20,501 INFO L375 BasicCegarLoop]: trace histogram [141, 140, 1, 1, 1] [2018-10-01 00:43:20,501 INFO L423 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:20,502 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:20,502 INFO L82 PathProgramCache]: Analyzing trace with hash 596243583, now seen corresponding path program 140 times [2018-10-01 00:43:20,502 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:20,502 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:20,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:20,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:20,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:21,468 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:21,468 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:21,475 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:21,544 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:21,545 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:21,549 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 19740 backedges. 0 proven. 19740 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:22,082 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:22,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 00:43:22,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 00:43:22,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 00:43:22,084 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:22,084 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand 143 states. [2018-10-01 00:43:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:23,102 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-01 00:43:23,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 00:43:23,102 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 284 [2018-10-01 00:43:23,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:23,103 INFO L225 Difference]: With dead ends: 289 [2018-10-01 00:43:23,103 INFO L226 Difference]: Without dead ends: 287 [2018-10-01 00:43:23,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:43:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-01 00:43:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-01 00:43:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-01 00:43:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-01 00:43:23,108 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 284 [2018-10-01 00:43:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:23,108 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-01 00:43:23,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 00:43:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-01 00:43:23,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-01 00:43:23,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:23,110 INFO L375 BasicCegarLoop]: trace histogram [142, 141, 1, 1, 1] [2018-10-01 00:43:23,110 INFO L423 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:23,110 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1759484985, now seen corresponding path program 141 times [2018-10-01 00:43:23,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:23,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:23,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:23,111 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:23,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:24,358 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:24,358 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:24,365 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:24,583 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 142 check-sat command(s) [2018-10-01 00:43:24,583 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:24,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:25,133 INFO L134 CoverageAnalysis]: Checked inductivity of 20022 backedges. 0 proven. 20022 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:25,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:25,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 00:43:25,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 00:43:25,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 00:43:25,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:25,156 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 144 states. [2018-10-01 00:43:26,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:26,203 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2018-10-01 00:43:26,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 00:43:26,204 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 286 [2018-10-01 00:43:26,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:26,204 INFO L225 Difference]: With dead ends: 291 [2018-10-01 00:43:26,205 INFO L226 Difference]: Without dead ends: 289 [2018-10-01 00:43:26,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:43:26,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-01 00:43:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-10-01 00:43:26,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-01 00:43:26,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2018-10-01 00:43:26,208 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 286 [2018-10-01 00:43:26,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:26,208 INFO L480 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2018-10-01 00:43:26,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 00:43:26,208 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2018-10-01 00:43:26,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2018-10-01 00:43:26,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:26,209 INFO L375 BasicCegarLoop]: trace histogram [143, 142, 1, 1, 1] [2018-10-01 00:43:26,210 INFO L423 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:26,210 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:26,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1351991949, now seen corresponding path program 142 times [2018-10-01 00:43:26,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:26,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:26,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:26,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:26,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:27,165 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:27,165 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:27,173 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:27,241 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:27,241 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:27,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 20306 backedges. 0 proven. 20306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:27,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:27,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 00:43:27,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 00:43:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 00:43:27,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:27,782 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand 145 states. [2018-10-01 00:43:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:28,956 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-01 00:43:28,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 00:43:28,956 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 288 [2018-10-01 00:43:28,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:28,957 INFO L225 Difference]: With dead ends: 293 [2018-10-01 00:43:28,957 INFO L226 Difference]: Without dead ends: 291 [2018-10-01 00:43:28,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:43:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-01 00:43:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-01 00:43:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-01 00:43:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-10-01 00:43:28,960 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 288 [2018-10-01 00:43:28,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:28,961 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-10-01 00:43:28,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 00:43:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-10-01 00:43:28,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-01 00:43:28,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:28,962 INFO L375 BasicCegarLoop]: trace histogram [144, 143, 1, 1, 1] [2018-10-01 00:43:28,963 INFO L423 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:28,963 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:28,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2110879789, now seen corresponding path program 143 times [2018-10-01 00:43:28,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:28,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:28,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:28,964 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:28,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:30,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:30,049 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:30,058 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:30,254 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 144 check-sat command(s) [2018-10-01 00:43:30,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:30,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 20592 backedges. 0 proven. 20592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:30,799 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:30,799 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 00:43:30,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 00:43:30,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 00:43:30,801 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:30,801 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 146 states. [2018-10-01 00:43:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:32,354 INFO L93 Difference]: Finished difference Result 295 states and 295 transitions. [2018-10-01 00:43:32,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 00:43:32,354 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 290 [2018-10-01 00:43:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:32,355 INFO L225 Difference]: With dead ends: 295 [2018-10-01 00:43:32,355 INFO L226 Difference]: Without dead ends: 293 [2018-10-01 00:43:32,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:32,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-10-01 00:43:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2018-10-01 00:43:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2018-10-01 00:43:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2018-10-01 00:43:32,361 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 290 [2018-10-01 00:43:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:32,361 INFO L480 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2018-10-01 00:43:32,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 00:43:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2018-10-01 00:43:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-10-01 00:43:32,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:32,363 INFO L375 BasicCegarLoop]: trace histogram [145, 144, 1, 1, 1] [2018-10-01 00:43:32,363 INFO L423 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:32,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:32,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965607, now seen corresponding path program 144 times [2018-10-01 00:43:32,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:32,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:32,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:32,364 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:32,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:33,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:33,380 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:33,387 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:33,584 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2018-10-01 00:43:33,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:33,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 20880 backedges. 0 proven. 20880 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:34,192 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:34,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-10-01 00:43:34,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 00:43:34,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 00:43:34,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:34,195 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 147 states. [2018-10-01 00:43:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:36,038 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-01 00:43:36,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 00:43:36,038 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 292 [2018-10-01 00:43:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:36,039 INFO L225 Difference]: With dead ends: 297 [2018-10-01 00:43:36,039 INFO L226 Difference]: Without dead ends: 295 [2018-10-01 00:43:36,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-01 00:43:36,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-01 00:43:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-01 00:43:36,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-01 00:43:36,043 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 292 [2018-10-01 00:43:36,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:36,043 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-01 00:43:36,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 00:43:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-01 00:43:36,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-01 00:43:36,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:36,044 INFO L375 BasicCegarLoop]: trace histogram [146, 145, 1, 1, 1] [2018-10-01 00:43:36,044 INFO L423 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:36,044 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:36,044 INFO L82 PathProgramCache]: Analyzing trace with hash -842253791, now seen corresponding path program 145 times [2018-10-01 00:43:36,044 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:36,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:36,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:36,045 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:36,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:37,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:37,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:37,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:37,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21170 backedges. 0 proven. 21170 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:37,724 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:37,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 00:43:37,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 00:43:37,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 00:43:37,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:37,726 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 148 states. [2018-10-01 00:43:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:39,646 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2018-10-01 00:43:39,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 00:43:39,646 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 294 [2018-10-01 00:43:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:39,647 INFO L225 Difference]: With dead ends: 299 [2018-10-01 00:43:39,647 INFO L226 Difference]: Without dead ends: 297 [2018-10-01 00:43:39,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 00:43:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2018-10-01 00:43:39,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2018-10-01 00:43:39,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-10-01 00:43:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2018-10-01 00:43:39,651 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 294 [2018-10-01 00:43:39,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:39,651 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2018-10-01 00:43:39,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 00:43:39,651 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2018-10-01 00:43:39,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-10-01 00:43:39,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:39,652 INFO L375 BasicCegarLoop]: trace histogram [147, 146, 1, 1, 1] [2018-10-01 00:43:39,652 INFO L423 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:39,652 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:39,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1951989413, now seen corresponding path program 146 times [2018-10-01 00:43:39,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:39,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:39,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:39,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:39,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:40,672 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:40,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:40,680 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:43:40,755 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:43:40,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:40,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 0 proven. 21462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:41,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:41,359 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-10-01 00:43:41,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 00:43:41,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 00:43:41,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:41,361 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand 149 states. [2018-10-01 00:43:42,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:42,572 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-01 00:43:42,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 00:43:42,572 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 296 [2018-10-01 00:43:42,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:42,573 INFO L225 Difference]: With dead ends: 301 [2018-10-01 00:43:42,573 INFO L226 Difference]: Without dead ends: 299 [2018-10-01 00:43:42,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-01 00:43:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-01 00:43:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-01 00:43:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-01 00:43:42,578 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 296 [2018-10-01 00:43:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:42,578 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-01 00:43:42,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 00:43:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-01 00:43:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-01 00:43:42,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:42,579 INFO L375 BasicCegarLoop]: trace histogram [148, 147, 1, 1, 1] [2018-10-01 00:43:42,580 INFO L423 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:42,580 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1038934549, now seen corresponding path program 147 times [2018-10-01 00:43:42,580 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:42,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:42,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:42,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:43,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:43,737 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:43,737 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:43,743 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:43:44,007 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 148 check-sat command(s) [2018-10-01 00:43:44,008 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:44,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:44,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21756 backedges. 0 proven. 21756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:44,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:44,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 00:43:44,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 00:43:44,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 00:43:44,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:44,785 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 150 states. [2018-10-01 00:43:46,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:46,464 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2018-10-01 00:43:46,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 00:43:46,465 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 298 [2018-10-01 00:43:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:46,465 INFO L225 Difference]: With dead ends: 303 [2018-10-01 00:43:46,466 INFO L226 Difference]: Without dead ends: 301 [2018-10-01 00:43:46,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-10-01 00:43:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2018-10-01 00:43:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2018-10-01 00:43:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 301 transitions. [2018-10-01 00:43:46,469 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 301 transitions. Word has length 298 [2018-10-01 00:43:46,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:46,469 INFO L480 AbstractCegarLoop]: Abstraction has 301 states and 301 transitions. [2018-10-01 00:43:46,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 00:43:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 301 transitions. [2018-10-01 00:43:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-01 00:43:46,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:46,470 INFO L375 BasicCegarLoop]: trace histogram [149, 148, 1, 1, 1] [2018-10-01 00:43:46,471 INFO L423 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:46,471 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:46,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1983741007, now seen corresponding path program 148 times [2018-10-01 00:43:46,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:46,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:46,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:46,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:46,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:47,543 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:47,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:47,551 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:43:47,624 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:43:47,624 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:47,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 22052 backedges. 0 proven. 22052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:48,191 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:48,191 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2018-10-01 00:43:48,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 00:43:48,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 00:43:48,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:48,193 INFO L87 Difference]: Start difference. First operand 301 states and 301 transitions. Second operand 151 states. [2018-10-01 00:43:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:49,331 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-01 00:43:49,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 00:43:49,331 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 300 [2018-10-01 00:43:49,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:49,332 INFO L225 Difference]: With dead ends: 305 [2018-10-01 00:43:49,332 INFO L226 Difference]: Without dead ends: 303 [2018-10-01 00:43:49,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:43:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-01 00:43:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-01 00:43:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-01 00:43:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-10-01 00:43:49,336 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 300 [2018-10-01 00:43:49,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:49,336 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-10-01 00:43:49,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 00:43:49,336 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-10-01 00:43:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-01 00:43:49,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:49,338 INFO L375 BasicCegarLoop]: trace histogram [150, 149, 1, 1, 1] [2018-10-01 00:43:49,338 INFO L423 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:49,338 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:49,338 INFO L82 PathProgramCache]: Analyzing trace with hash -590319607, now seen corresponding path program 149 times [2018-10-01 00:43:49,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:49,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:49,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:49,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:49,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:50,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:50,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:50,607 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:43:50,811 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 150 check-sat command(s) [2018-10-01 00:43:50,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:50,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22350 backedges. 0 proven. 22350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:51,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:51,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 00:43:51,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 00:43:51,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 00:43:51,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:51,364 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 152 states. [2018-10-01 00:43:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:53,209 INFO L93 Difference]: Finished difference Result 307 states and 307 transitions. [2018-10-01 00:43:53,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 00:43:53,209 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 302 [2018-10-01 00:43:53,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:53,210 INFO L225 Difference]: With dead ends: 307 [2018-10-01 00:43:53,210 INFO L226 Difference]: Without dead ends: 305 [2018-10-01 00:43:53,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:43:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-10-01 00:43:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2018-10-01 00:43:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-10-01 00:43:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 305 transitions. [2018-10-01 00:43:53,215 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 305 transitions. Word has length 302 [2018-10-01 00:43:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 305 transitions. [2018-10-01 00:43:53,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 00:43:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 305 transitions. [2018-10-01 00:43:53,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2018-10-01 00:43:53,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:53,217 INFO L375 BasicCegarLoop]: trace histogram [151, 150, 1, 1, 1] [2018-10-01 00:43:53,217 INFO L423 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:53,217 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:53,218 INFO L82 PathProgramCache]: Analyzing trace with hash -361407165, now seen corresponding path program 150 times [2018-10-01 00:43:53,218 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:53,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:53,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:53,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:53,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:54,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:54,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:54,329 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:43:54,540 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 151 check-sat command(s) [2018-10-01 00:43:54,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:43:54,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22650 backedges. 0 proven. 22650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:55,304 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:55,305 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2018-10-01 00:43:55,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 00:43:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 00:43:55,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:55,307 INFO L87 Difference]: Start difference. First operand 305 states and 305 transitions. Second operand 153 states. [2018-10-01 00:43:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:43:57,423 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-01 00:43:57,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 00:43:57,424 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 304 [2018-10-01 00:43:57,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:43:57,424 INFO L225 Difference]: With dead ends: 309 [2018-10-01 00:43:57,424 INFO L226 Difference]: Without dead ends: 307 [2018-10-01 00:43:57,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:43:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-01 00:43:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-01 00:43:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-01 00:43:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-01 00:43:57,428 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 304 [2018-10-01 00:43:57,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:43:57,428 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-01 00:43:57,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 00:43:57,428 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-01 00:43:57,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-01 00:43:57,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:43:57,429 INFO L375 BasicCegarLoop]: trace histogram [152, 151, 1, 1, 1] [2018-10-01 00:43:57,429 INFO L423 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:43:57,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:43:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash 580117501, now seen corresponding path program 151 times [2018-10-01 00:43:57,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:43:57,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:43:57,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:57,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:43:57,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:43:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:58,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:43:58,585 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:43:58,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:43:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:43:58,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:43:59,248 INFO L134 CoverageAnalysis]: Checked inductivity of 22952 backedges. 0 proven. 22952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:43:59,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:43:59,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 00:43:59,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 00:43:59,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 00:43:59,271 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:43:59,271 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 154 states. [2018-10-01 00:44:00,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:00,582 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2018-10-01 00:44:00,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 00:44:00,582 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 306 [2018-10-01 00:44:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:00,583 INFO L225 Difference]: With dead ends: 311 [2018-10-01 00:44:00,583 INFO L226 Difference]: Without dead ends: 309 [2018-10-01 00:44:00,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 00:44:00,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-10-01 00:44:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2018-10-01 00:44:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2018-10-01 00:44:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2018-10-01 00:44:00,588 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 306 [2018-10-01 00:44:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:00,589 INFO L480 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2018-10-01 00:44:00,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 00:44:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2018-10-01 00:44:00,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-01 00:44:00,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:00,590 INFO L375 BasicCegarLoop]: trace histogram [153, 152, 1, 1, 1] [2018-10-01 00:44:00,590 INFO L423 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:00,590 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash -852777929, now seen corresponding path program 152 times [2018-10-01 00:44:00,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:00,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:00,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:00,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:00,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:01,854 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:01,854 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:01,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:01,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:01,942 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:01,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 23256 backedges. 0 proven. 23256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:02,548 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:02,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2018-10-01 00:44:02,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 00:44:02,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 00:44:02,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:02,550 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand 155 states. [2018-10-01 00:44:04,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:04,140 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-01 00:44:04,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 00:44:04,140 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 308 [2018-10-01 00:44:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:04,141 INFO L225 Difference]: With dead ends: 313 [2018-10-01 00:44:04,142 INFO L226 Difference]: Without dead ends: 311 [2018-10-01 00:44:04,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-01 00:44:04,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-01 00:44:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-01 00:44:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-01 00:44:04,146 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 308 [2018-10-01 00:44:04,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:04,146 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-01 00:44:04,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 00:44:04,146 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-01 00:44:04,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-01 00:44:04,147 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:04,147 INFO L375 BasicCegarLoop]: trace histogram [154, 153, 1, 1, 1] [2018-10-01 00:44:04,148 INFO L423 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:04,148 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:04,148 INFO L82 PathProgramCache]: Analyzing trace with hash 819215857, now seen corresponding path program 153 times [2018-10-01 00:44:04,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:04,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:04,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:04,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:04,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:05,423 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:05,423 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:05,423 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:05,430 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:05,685 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 154 check-sat command(s) [2018-10-01 00:44:05,686 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:05,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23562 backedges. 0 proven. 23562 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:06,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:06,275 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2018-10-01 00:44:06,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 00:44:06,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 00:44:06,277 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:06,277 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 156 states. [2018-10-01 00:44:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:08,244 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2018-10-01 00:44:08,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 00:44:08,244 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 310 [2018-10-01 00:44:08,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:08,245 INFO L225 Difference]: With dead ends: 315 [2018-10-01 00:44:08,245 INFO L226 Difference]: Without dead ends: 313 [2018-10-01 00:44:08,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2018-10-01 00:44:08,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2018-10-01 00:44:08,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-10-01 00:44:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2018-10-01 00:44:08,249 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 310 [2018-10-01 00:44:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:08,249 INFO L480 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2018-10-01 00:44:08,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 00:44:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2018-10-01 00:44:08,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-01 00:44:08,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:08,250 INFO L375 BasicCegarLoop]: trace histogram [155, 154, 1, 1, 1] [2018-10-01 00:44:08,250 INFO L423 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:08,250 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:08,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1287475499, now seen corresponding path program 154 times [2018-10-01 00:44:08,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:08,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:08,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:08,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:08,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:09,338 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:09,338 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:09,346 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:09,423 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:09,424 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:09,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 23870 backedges. 0 proven. 23870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:10,099 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:10,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2018-10-01 00:44:10,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 00:44:10,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 00:44:10,101 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:10,101 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand 157 states. [2018-10-01 00:44:12,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:12,066 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-01 00:44:12,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 00:44:12,066 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 312 [2018-10-01 00:44:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:12,067 INFO L225 Difference]: With dead ends: 317 [2018-10-01 00:44:12,067 INFO L226 Difference]: Without dead ends: 315 [2018-10-01 00:44:12,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:12,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-01 00:44:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-01 00:44:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-01 00:44:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-10-01 00:44:12,072 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 312 [2018-10-01 00:44:12,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:12,072 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-10-01 00:44:12,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 00:44:12,072 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-10-01 00:44:12,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-01 00:44:12,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:12,074 INFO L375 BasicCegarLoop]: trace histogram [156, 155, 1, 1, 1] [2018-10-01 00:44:12,074 INFO L423 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:12,074 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:12,074 INFO L82 PathProgramCache]: Analyzing trace with hash 313425381, now seen corresponding path program 155 times [2018-10-01 00:44:12,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:12,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:12,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:12,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:12,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:13,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:13,477 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:13,484 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:13,699 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 156 check-sat command(s) [2018-10-01 00:44:13,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:13,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 24180 backedges. 0 proven. 24180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:14,326 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:14,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2018-10-01 00:44:14,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 00:44:14,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 00:44:14,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:14,329 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 158 states. [2018-10-01 00:44:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:16,313 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2018-10-01 00:44:16,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 00:44:16,313 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 314 [2018-10-01 00:44:16,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:16,314 INFO L225 Difference]: With dead ends: 319 [2018-10-01 00:44:16,314 INFO L226 Difference]: Without dead ends: 317 [2018-10-01 00:44:16,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:44:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-10-01 00:44:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2018-10-01 00:44:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-01 00:44:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-01 00:44:16,318 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 314 [2018-10-01 00:44:16,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:16,318 INFO L480 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-01 00:44:16,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 00:44:16,318 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-01 00:44:16,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-01 00:44:16,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:16,319 INFO L375 BasicCegarLoop]: trace histogram [157, 156, 1, 1, 1] [2018-10-01 00:44:16,319 INFO L423 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:16,319 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:16,319 INFO L82 PathProgramCache]: Analyzing trace with hash 554132511, now seen corresponding path program 156 times [2018-10-01 00:44:16,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:16,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:16,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:16,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:16,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:17,502 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:17,502 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:17,509 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:17,738 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 157 check-sat command(s) [2018-10-01 00:44:17,738 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:17,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 24492 backedges. 0 proven. 24492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:18,346 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:18,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2018-10-01 00:44:18,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 00:44:18,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 00:44:18,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:18,348 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 159 states. [2018-10-01 00:44:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:20,480 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-01 00:44:20,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 00:44:20,481 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 316 [2018-10-01 00:44:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:20,482 INFO L225 Difference]: With dead ends: 321 [2018-10-01 00:44:20,482 INFO L226 Difference]: Without dead ends: 319 [2018-10-01 00:44:20,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:20,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-01 00:44:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-01 00:44:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-01 00:44:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-01 00:44:20,487 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 316 [2018-10-01 00:44:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:20,488 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-01 00:44:20,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 00:44:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-01 00:44:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-01 00:44:20,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:20,489 INFO L375 BasicCegarLoop]: trace histogram [158, 157, 1, 1, 1] [2018-10-01 00:44:20,490 INFO L423 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:20,490 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:20,490 INFO L82 PathProgramCache]: Analyzing trace with hash -54549543, now seen corresponding path program 157 times [2018-10-01 00:44:20,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:20,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:20,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:20,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:20,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:21,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:21,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:21,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:21,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:22,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24806 backedges. 0 proven. 24806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:22,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:22,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2018-10-01 00:44:22,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 00:44:22,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 00:44:22,460 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:22,460 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 160 states. [2018-10-01 00:44:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:24,345 INFO L93 Difference]: Finished difference Result 323 states and 323 transitions. [2018-10-01 00:44:24,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 00:44:24,345 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 318 [2018-10-01 00:44:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:24,346 INFO L225 Difference]: With dead ends: 323 [2018-10-01 00:44:24,346 INFO L226 Difference]: Without dead ends: 321 [2018-10-01 00:44:24,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:24,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2018-10-01 00:44:24,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2018-10-01 00:44:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-10-01 00:44:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 321 transitions. [2018-10-01 00:44:24,350 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 321 transitions. Word has length 318 [2018-10-01 00:44:24,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:24,350 INFO L480 AbstractCegarLoop]: Abstraction has 321 states and 321 transitions. [2018-10-01 00:44:24,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 00:44:24,350 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 321 transitions. [2018-10-01 00:44:24,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-10-01 00:44:24,351 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:24,352 INFO L375 BasicCegarLoop]: trace histogram [159, 158, 1, 1, 1] [2018-10-01 00:44:24,352 INFO L423 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:24,352 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash -882451181, now seen corresponding path program 158 times [2018-10-01 00:44:24,352 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:24,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:24,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:24,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:24,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:25,685 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:25,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:25,685 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:25,693 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:25,771 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:25,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:25,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 25122 backedges. 0 proven. 25122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:26,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:26,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2018-10-01 00:44:26,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 00:44:26,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 00:44:26,384 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:26,384 INFO L87 Difference]: Start difference. First operand 321 states and 321 transitions. Second operand 161 states. [2018-10-01 00:44:27,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:27,678 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-01 00:44:27,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 00:44:27,678 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 320 [2018-10-01 00:44:27,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:27,679 INFO L225 Difference]: With dead ends: 325 [2018-10-01 00:44:27,679 INFO L226 Difference]: Without dead ends: 323 [2018-10-01 00:44:27,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-01 00:44:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-01 00:44:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-01 00:44:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-01 00:44:27,683 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 320 [2018-10-01 00:44:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:27,683 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-01 00:44:27,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 00:44:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-01 00:44:27,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-01 00:44:27,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:27,684 INFO L375 BasicCegarLoop]: trace histogram [160, 159, 1, 1, 1] [2018-10-01 00:44:27,685 INFO L423 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:27,685 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:27,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1926975539, now seen corresponding path program 159 times [2018-10-01 00:44:27,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:27,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:27,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:27,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:27,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:28,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:28,916 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:28,923 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:29,195 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 160 check-sat command(s) [2018-10-01 00:44:29,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:29,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 25440 backedges. 0 proven. 25440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:29,821 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:29,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2018-10-01 00:44:29,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 00:44:29,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 00:44:29,824 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:29,824 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 162 states. [2018-10-01 00:44:32,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:32,200 INFO L93 Difference]: Finished difference Result 327 states and 327 transitions. [2018-10-01 00:44:32,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 00:44:32,201 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 322 [2018-10-01 00:44:32,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:32,201 INFO L225 Difference]: With dead ends: 327 [2018-10-01 00:44:32,202 INFO L226 Difference]: Without dead ends: 325 [2018-10-01 00:44:32,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-10-01 00:44:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2018-10-01 00:44:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-10-01 00:44:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 325 transitions. [2018-10-01 00:44:32,205 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 325 transitions. Word has length 322 [2018-10-01 00:44:32,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:32,206 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 325 transitions. [2018-10-01 00:44:32,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 00:44:32,206 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 325 transitions. [2018-10-01 00:44:32,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-10-01 00:44:32,207 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:32,207 INFO L375 BasicCegarLoop]: trace histogram [161, 160, 1, 1, 1] [2018-10-01 00:44:32,207 INFO L423 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:32,207 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -692536313, now seen corresponding path program 160 times [2018-10-01 00:44:32,207 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:32,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:32,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:32,208 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:32,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:33,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:33,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:33,415 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:33,493 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:33,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:33,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:34,070 INFO L134 CoverageAnalysis]: Checked inductivity of 25760 backedges. 0 proven. 25760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:34,090 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:34,090 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 162 [2018-10-01 00:44:34,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 00:44:34,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 00:44:34,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:34,093 INFO L87 Difference]: Start difference. First operand 325 states and 325 transitions. Second operand 163 states. [2018-10-01 00:44:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:36,016 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-01 00:44:36,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 00:44:36,016 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 324 [2018-10-01 00:44:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:36,016 INFO L225 Difference]: With dead ends: 329 [2018-10-01 00:44:36,016 INFO L226 Difference]: Without dead ends: 327 [2018-10-01 00:44:36,017 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-01 00:44:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-01 00:44:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-01 00:44:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-10-01 00:44:36,020 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 324 [2018-10-01 00:44:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:36,020 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-10-01 00:44:36,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 00:44:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-10-01 00:44:36,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-01 00:44:36,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:36,022 INFO L375 BasicCegarLoop]: trace histogram [162, 161, 1, 1, 1] [2018-10-01 00:44:36,022 INFO L423 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:36,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:36,022 INFO L82 PathProgramCache]: Analyzing trace with hash 192586177, now seen corresponding path program 161 times [2018-10-01 00:44:36,022 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:36,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:36,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:36,023 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:36,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:37,190 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:37,190 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:37,198 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:44:37,434 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 162 check-sat command(s) [2018-10-01 00:44:37,434 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:37,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 26082 backedges. 0 proven. 26082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:38,071 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:38,071 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2018-10-01 00:44:38,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 00:44:38,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 00:44:38,073 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:38,073 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 164 states. [2018-10-01 00:44:39,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:39,373 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2018-10-01 00:44:39,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 00:44:39,378 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 326 [2018-10-01 00:44:39,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:39,379 INFO L225 Difference]: With dead ends: 331 [2018-10-01 00:44:39,379 INFO L226 Difference]: Without dead ends: 329 [2018-10-01 00:44:39,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:39,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-10-01 00:44:39,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2018-10-01 00:44:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-10-01 00:44:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2018-10-01 00:44:39,384 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 326 [2018-10-01 00:44:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:39,384 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2018-10-01 00:44:39,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 00:44:39,384 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2018-10-01 00:44:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-10-01 00:44:39,386 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:39,386 INFO L375 BasicCegarLoop]: trace histogram [163, 162, 1, 1, 1] [2018-10-01 00:44:39,386 INFO L423 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:39,386 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:39,386 INFO L82 PathProgramCache]: Analyzing trace with hash 391774459, now seen corresponding path program 162 times [2018-10-01 00:44:39,387 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:39,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:39,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:39,387 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:39,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:40,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:40,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:40,623 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:44:40,889 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 163 check-sat command(s) [2018-10-01 00:44:40,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:40,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 26406 backedges. 0 proven. 26406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:41,497 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:41,497 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 164 [2018-10-01 00:44:41,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 00:44:41,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 00:44:41,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:41,499 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 165 states. [2018-10-01 00:44:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:43,877 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-01 00:44:43,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 00:44:43,877 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 328 [2018-10-01 00:44:43,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:43,878 INFO L225 Difference]: With dead ends: 333 [2018-10-01 00:44:43,878 INFO L226 Difference]: Without dead ends: 331 [2018-10-01 00:44:43,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-01 00:44:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-01 00:44:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-01 00:44:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-01 00:44:43,882 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 328 [2018-10-01 00:44:43,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:43,882 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-01 00:44:43,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 00:44:43,882 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-01 00:44:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-01 00:44:43,883 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:43,883 INFO L375 BasicCegarLoop]: trace histogram [164, 163, 1, 1, 1] [2018-10-01 00:44:43,883 INFO L423 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:43,883 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:43,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1461814859, now seen corresponding path program 163 times [2018-10-01 00:44:43,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:43,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:43,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:43,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:43,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:45,119 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:45,119 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:45,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:45,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 26732 backedges. 0 proven. 26732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:45,899 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:45,899 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2018-10-01 00:44:45,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 00:44:45,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 00:44:45,902 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:45,902 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 166 states. [2018-10-01 00:44:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:47,451 INFO L93 Difference]: Finished difference Result 335 states and 335 transitions. [2018-10-01 00:44:47,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 00:44:47,451 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 330 [2018-10-01 00:44:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:47,452 INFO L225 Difference]: With dead ends: 335 [2018-10-01 00:44:47,452 INFO L226 Difference]: Without dead ends: 333 [2018-10-01 00:44:47,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:44:47,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-01 00:44:47,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2018-10-01 00:44:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2018-10-01 00:44:47,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 333 transitions. [2018-10-01 00:44:47,458 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 333 transitions. Word has length 330 [2018-10-01 00:44:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:47,458 INFO L480 AbstractCegarLoop]: Abstraction has 333 states and 333 transitions. [2018-10-01 00:44:47,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 00:44:47,459 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 333 transitions. [2018-10-01 00:44:47,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-10-01 00:44:47,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:47,460 INFO L375 BasicCegarLoop]: trace histogram [165, 164, 1, 1, 1] [2018-10-01 00:44:47,460 INFO L423 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:47,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:47,461 INFO L82 PathProgramCache]: Analyzing trace with hash -349721617, now seen corresponding path program 164 times [2018-10-01 00:44:47,461 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:47,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:47,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:47,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:44:47,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:49,170 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:49,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:49,178 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:44:49,259 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:44:49,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:49,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 27060 backedges. 0 proven. 27060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:49,892 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:49,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 166 [2018-10-01 00:44:49,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 00:44:49,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 00:44:49,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:49,894 INFO L87 Difference]: Start difference. First operand 333 states and 333 transitions. Second operand 167 states. [2018-10-01 00:44:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:52,279 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-01 00:44:52,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 00:44:52,279 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 332 [2018-10-01 00:44:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:52,280 INFO L225 Difference]: With dead ends: 337 [2018-10-01 00:44:52,280 INFO L226 Difference]: Without dead ends: 335 [2018-10-01 00:44:52,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:44:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-01 00:44:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-01 00:44:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-01 00:44:52,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-01 00:44:52,284 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 332 [2018-10-01 00:44:52,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:52,284 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-01 00:44:52,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 00:44:52,284 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-01 00:44:52,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-01 00:44:52,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:52,286 INFO L375 BasicCegarLoop]: trace histogram [166, 165, 1, 1, 1] [2018-10-01 00:44:52,286 INFO L423 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:52,286 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:52,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1074972759, now seen corresponding path program 165 times [2018-10-01 00:44:52,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:52,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:52,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:52,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:52,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:53,540 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:53,541 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:53,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:44:53,835 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 166 check-sat command(s) [2018-10-01 00:44:53,836 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:53,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 27390 backedges. 0 proven. 27390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:54,474 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:54,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2018-10-01 00:44:54,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 00:44:54,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 00:44:54,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:54,477 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 168 states. [2018-10-01 00:44:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:44:56,712 INFO L93 Difference]: Finished difference Result 339 states and 339 transitions. [2018-10-01 00:44:56,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 00:44:56,712 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 334 [2018-10-01 00:44:56,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:44:56,713 INFO L225 Difference]: With dead ends: 339 [2018-10-01 00:44:56,713 INFO L226 Difference]: Without dead ends: 337 [2018-10-01 00:44:56,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 00:44:56,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-10-01 00:44:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2018-10-01 00:44:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-10-01 00:44:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2018-10-01 00:44:56,717 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 334 [2018-10-01 00:44:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:44:56,717 INFO L480 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2018-10-01 00:44:56,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 00:44:56,717 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2018-10-01 00:44:56,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-10-01 00:44:56,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:44:56,718 INFO L375 BasicCegarLoop]: trace histogram [167, 166, 1, 1, 1] [2018-10-01 00:44:56,718 INFO L423 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:44:56,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:44:56,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2038349027, now seen corresponding path program 166 times [2018-10-01 00:44:56,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:44:56,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:44:56,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:56,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:44:56,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:44:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:44:58,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:58,016 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:44:58,016 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:44:58,023 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:44:58,105 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:44:58,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:44:58,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:44:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27722 backedges. 0 proven. 27722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:44:58,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:44:58,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 168 [2018-10-01 00:44:58,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 00:44:58,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 00:44:58,764 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:44:58,764 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand 169 states. [2018-10-01 00:45:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:00,833 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-01 00:45:00,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 00:45:00,834 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 336 [2018-10-01 00:45:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:00,835 INFO L225 Difference]: With dead ends: 341 [2018-10-01 00:45:00,835 INFO L226 Difference]: Without dead ends: 339 [2018-10-01 00:45:00,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:45:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-01 00:45:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-01 00:45:00,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-01 00:45:00,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-10-01 00:45:00,838 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 336 [2018-10-01 00:45:00,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:00,839 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-10-01 00:45:00,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 00:45:00,839 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-10-01 00:45:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-01 00:45:00,840 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:00,840 INFO L375 BasicCegarLoop]: trace histogram [168, 167, 1, 1, 1] [2018-10-01 00:45:00,840 INFO L423 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:00,840 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash 348380061, now seen corresponding path program 167 times [2018-10-01 00:45:00,840 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:00,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:00,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:00,841 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:00,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:02,413 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:02,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:02,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:02,420 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:02,670 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 168 check-sat command(s) [2018-10-01 00:45:02,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:02,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 28056 backedges. 0 proven. 28056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:03,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:03,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2018-10-01 00:45:03,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 00:45:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 00:45:03,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:03,302 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 170 states. [2018-10-01 00:45:04,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:04,784 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2018-10-01 00:45:04,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 00:45:04,784 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 338 [2018-10-01 00:45:04,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:04,784 INFO L225 Difference]: With dead ends: 343 [2018-10-01 00:45:04,785 INFO L226 Difference]: Without dead ends: 341 [2018-10-01 00:45:04,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-10-01 00:45:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2018-10-01 00:45:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2018-10-01 00:45:04,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2018-10-01 00:45:04,788 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 338 [2018-10-01 00:45:04,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:04,789 INFO L480 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2018-10-01 00:45:04,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 00:45:04,789 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2018-10-01 00:45:04,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2018-10-01 00:45:04,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:04,790 INFO L375 BasicCegarLoop]: trace histogram [169, 168, 1, 1, 1] [2018-10-01 00:45:04,790 INFO L423 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:04,790 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash -214158377, now seen corresponding path program 168 times [2018-10-01 00:45:04,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:04,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:04,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:04,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:04,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:06,068 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:06,068 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:06,076 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:45:06,344 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 169 check-sat command(s) [2018-10-01 00:45:06,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:06,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 28392 backedges. 0 proven. 28392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:07,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:07,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 170 [2018-10-01 00:45:07,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 00:45:07,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 00:45:07,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:07,134 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand 171 states. [2018-10-01 00:45:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:08,694 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-01 00:45:08,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 00:45:08,694 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 340 [2018-10-01 00:45:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:08,695 INFO L225 Difference]: With dead ends: 345 [2018-10-01 00:45:08,695 INFO L226 Difference]: Without dead ends: 343 [2018-10-01 00:45:08,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-01 00:45:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-01 00:45:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-01 00:45:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-01 00:45:08,699 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 340 [2018-10-01 00:45:08,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:08,699 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-01 00:45:08,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 00:45:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-01 00:45:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-01 00:45:08,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:08,700 INFO L375 BasicCegarLoop]: trace histogram [170, 169, 1, 1, 1] [2018-10-01 00:45:08,700 INFO L423 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:08,700 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash 352282001, now seen corresponding path program 169 times [2018-10-01 00:45:08,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:08,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:08,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:08,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:08,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:10,002 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:10,002 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:10,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:10,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 28730 backedges. 0 proven. 28730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:10,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:10,735 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2018-10-01 00:45:10,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 00:45:10,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 00:45:10,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:10,737 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 172 states. [2018-10-01 00:45:12,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:12,317 INFO L93 Difference]: Finished difference Result 347 states and 347 transitions. [2018-10-01 00:45:12,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 00:45:12,317 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 342 [2018-10-01 00:45:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:12,318 INFO L225 Difference]: With dead ends: 347 [2018-10-01 00:45:12,318 INFO L226 Difference]: Without dead ends: 345 [2018-10-01 00:45:12,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:45:12,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2018-10-01 00:45:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2018-10-01 00:45:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-10-01 00:45:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 345 transitions. [2018-10-01 00:45:12,322 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 345 transitions. Word has length 342 [2018-10-01 00:45:12,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:12,322 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 345 transitions. [2018-10-01 00:45:12,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 00:45:12,323 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 345 transitions. [2018-10-01 00:45:12,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2018-10-01 00:45:12,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:12,324 INFO L375 BasicCegarLoop]: trace histogram [171, 170, 1, 1, 1] [2018-10-01 00:45:12,324 INFO L423 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:12,324 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:12,324 INFO L82 PathProgramCache]: Analyzing trace with hash -759361333, now seen corresponding path program 170 times [2018-10-01 00:45:12,324 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:12,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:12,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:12,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:12,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:13,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:13,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:13,663 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:13,745 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:13,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:13,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 29070 backedges. 0 proven. 29070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:14,406 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:14,407 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 172 [2018-10-01 00:45:14,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 00:45:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 00:45:14,410 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:14,410 INFO L87 Difference]: Start difference. First operand 345 states and 345 transitions. Second operand 173 states. [2018-10-01 00:45:16,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:16,039 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-01 00:45:16,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 00:45:16,039 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 344 [2018-10-01 00:45:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:16,040 INFO L225 Difference]: With dead ends: 349 [2018-10-01 00:45:16,040 INFO L226 Difference]: Without dead ends: 347 [2018-10-01 00:45:16,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 00:45:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-01 00:45:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-01 00:45:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-01 00:45:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-10-01 00:45:16,043 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 344 [2018-10-01 00:45:16,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:16,044 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-10-01 00:45:16,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 00:45:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-10-01 00:45:16,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-01 00:45:16,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:16,045 INFO L375 BasicCegarLoop]: trace histogram [172, 171, 1, 1, 1] [2018-10-01 00:45:16,045 INFO L423 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:16,045 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:16,045 INFO L82 PathProgramCache]: Analyzing trace with hash 398251397, now seen corresponding path program 171 times [2018-10-01 00:45:16,045 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:16,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:16,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:16,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:16,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:17,533 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:17,533 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:17,542 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:17,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 172 check-sat command(s) [2018-10-01 00:45:17,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:17,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 29412 backedges. 0 proven. 29412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:18,562 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:18,562 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2018-10-01 00:45:18,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 00:45:18,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 00:45:18,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:18,564 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 174 states. [2018-10-01 00:45:20,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:20,349 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2018-10-01 00:45:20,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 00:45:20,349 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 346 [2018-10-01 00:45:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:20,350 INFO L225 Difference]: With dead ends: 351 [2018-10-01 00:45:20,350 INFO L226 Difference]: Without dead ends: 349 [2018-10-01 00:45:20,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2018-10-01 00:45:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2018-10-01 00:45:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2018-10-01 00:45:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 349 transitions. [2018-10-01 00:45:20,354 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 349 transitions. Word has length 346 [2018-10-01 00:45:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:20,354 INFO L480 AbstractCegarLoop]: Abstraction has 349 states and 349 transitions. [2018-10-01 00:45:20,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 00:45:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 349 transitions. [2018-10-01 00:45:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-01 00:45:20,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:20,355 INFO L375 BasicCegarLoop]: trace histogram [173, 172, 1, 1, 1] [2018-10-01 00:45:20,355 INFO L423 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:20,355 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash 467555263, now seen corresponding path program 172 times [2018-10-01 00:45:20,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:20,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:20,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:21,853 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:21,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:21,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:21,861 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:21,947 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:21,947 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:21,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 29756 backedges. 0 proven. 29756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:22,652 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:22,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 174 [2018-10-01 00:45:22,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 00:45:22,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 00:45:22,655 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:22,655 INFO L87 Difference]: Start difference. First operand 349 states and 349 transitions. Second operand 175 states. [2018-10-01 00:45:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:25,543 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-10-01 00:45:25,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 00:45:25,544 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 348 [2018-10-01 00:45:25,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:25,544 INFO L225 Difference]: With dead ends: 353 [2018-10-01 00:45:25,545 INFO L226 Difference]: Without dead ends: 351 [2018-10-01 00:45:25,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-01 00:45:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-01 00:45:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-01 00:45:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-10-01 00:45:25,549 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 348 [2018-10-01 00:45:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:25,549 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-10-01 00:45:25,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 00:45:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-10-01 00:45:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-01 00:45:25,550 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:25,550 INFO L375 BasicCegarLoop]: trace histogram [174, 173, 1, 1, 1] [2018-10-01 00:45:25,551 INFO L423 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:25,551 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:25,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1650906247, now seen corresponding path program 173 times [2018-10-01 00:45:25,551 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:25,551 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:25,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:25,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:25,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:27,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:27,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:27,070 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:27,338 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 174 check-sat command(s) [2018-10-01 00:45:27,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:27,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:27,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30102 backedges. 0 proven. 30102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:28,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:28,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 175 [2018-10-01 00:45:28,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 00:45:28,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 00:45:28,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:28,018 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 176 states. [2018-10-01 00:45:31,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:31,109 INFO L93 Difference]: Finished difference Result 355 states and 355 transitions. [2018-10-01 00:45:31,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 00:45:31,110 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 350 [2018-10-01 00:45:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:31,110 INFO L225 Difference]: With dead ends: 355 [2018-10-01 00:45:31,110 INFO L226 Difference]: Without dead ends: 353 [2018-10-01 00:45:31,111 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:31,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-01 00:45:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2018-10-01 00:45:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2018-10-01 00:45:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 353 transitions. [2018-10-01 00:45:31,114 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 353 transitions. Word has length 350 [2018-10-01 00:45:31,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:31,114 INFO L480 AbstractCegarLoop]: Abstraction has 353 states and 353 transitions. [2018-10-01 00:45:31,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 00:45:31,114 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 353 transitions. [2018-10-01 00:45:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-10-01 00:45:31,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:31,116 INFO L375 BasicCegarLoop]: trace histogram [175, 174, 1, 1, 1] [2018-10-01 00:45:31,116 INFO L423 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:31,116 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:31,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1677919053, now seen corresponding path program 174 times [2018-10-01 00:45:31,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:31,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:31,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:31,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:31,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:32,637 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:32,637 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:45:32,650 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:32,938 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 175 check-sat command(s) [2018-10-01 00:45:32,938 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:32,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30450 backedges. 0 proven. 30450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:33,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:33,637 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 176 [2018-10-01 00:45:33,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 00:45:33,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 00:45:33,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:33,640 INFO L87 Difference]: Start difference. First operand 353 states and 353 transitions. Second operand 177 states. [2018-10-01 00:45:35,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:35,541 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-01 00:45:35,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 00:45:35,541 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 352 [2018-10-01 00:45:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:35,542 INFO L225 Difference]: With dead ends: 357 [2018-10-01 00:45:35,542 INFO L226 Difference]: Without dead ends: 355 [2018-10-01 00:45:35,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:45:35,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-01 00:45:35,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-01 00:45:35,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-01 00:45:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-01 00:45:35,546 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 352 [2018-10-01 00:45:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:35,546 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-01 00:45:35,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 00:45:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-01 00:45:35,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-01 00:45:35,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:35,548 INFO L375 BasicCegarLoop]: trace histogram [176, 175, 1, 1, 1] [2018-10-01 00:45:35,548 INFO L423 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:35,548 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:35,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1867421843, now seen corresponding path program 175 times [2018-10-01 00:45:35,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:35,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:35,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:35,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:35,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:37,013 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:37,013 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-01 00:45:37,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:37,115 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30800 backedges. 0 proven. 30800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:37,886 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:37,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 177 [2018-10-01 00:45:37,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 00:45:37,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 00:45:37,888 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:37,889 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 178 states. [2018-10-01 00:45:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:40,863 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2018-10-01 00:45:40,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 00:45:40,863 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 354 [2018-10-01 00:45:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:40,864 INFO L225 Difference]: With dead ends: 359 [2018-10-01 00:45:40,864 INFO L226 Difference]: Without dead ends: 357 [2018-10-01 00:45:40,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:40,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2018-10-01 00:45:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2018-10-01 00:45:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2018-10-01 00:45:40,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 357 transitions. [2018-10-01 00:45:40,868 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 357 transitions. Word has length 354 [2018-10-01 00:45:40,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:40,868 INFO L480 AbstractCegarLoop]: Abstraction has 357 states and 357 transitions. [2018-10-01 00:45:40,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 00:45:40,868 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 357 transitions. [2018-10-01 00:45:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2018-10-01 00:45:40,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:40,869 INFO L375 BasicCegarLoop]: trace histogram [177, 176, 1, 1, 1] [2018-10-01 00:45:40,869 INFO L423 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:40,869 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:40,869 INFO L82 PathProgramCache]: Analyzing trace with hash 703990695, now seen corresponding path program 176 times [2018-10-01 00:45:40,869 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:40,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:40,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:40,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:45:40,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:42,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:42,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:42,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:45:42,493 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:45:42,493 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:42,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 31152 backedges. 0 proven. 31152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:43,181 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:43,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 178 [2018-10-01 00:45:43,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 00:45:43,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 00:45:43,184 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:43,184 INFO L87 Difference]: Start difference. First operand 357 states and 357 transitions. Second operand 179 states. [2018-10-01 00:45:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:45,628 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-01 00:45:45,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 00:45:45,631 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 356 [2018-10-01 00:45:45,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:45,632 INFO L225 Difference]: With dead ends: 361 [2018-10-01 00:45:45,632 INFO L226 Difference]: Without dead ends: 359 [2018-10-01 00:45:45,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:45:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-01 00:45:45,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-01 00:45:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-01 00:45:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-10-01 00:45:45,637 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 356 [2018-10-01 00:45:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:45,637 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-10-01 00:45:45,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 00:45:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-10-01 00:45:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-01 00:45:45,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:45,638 INFO L375 BasicCegarLoop]: trace histogram [178, 177, 1, 1, 1] [2018-10-01 00:45:45,638 INFO L423 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:45,639 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:45,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2069722783, now seen corresponding path program 177 times [2018-10-01 00:45:45,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:45,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:45,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:45,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:45,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:47,020 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:47,020 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:47,031 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:45:47,370 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 178 check-sat command(s) [2018-10-01 00:45:47,371 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:47,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:48,057 INFO L134 CoverageAnalysis]: Checked inductivity of 31506 backedges. 0 proven. 31506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:48,078 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:48,079 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 179 [2018-10-01 00:45:48,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 00:45:48,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 00:45:48,081 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:48,082 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 180 states. [2018-10-01 00:45:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:51,206 INFO L93 Difference]: Finished difference Result 363 states and 363 transitions. [2018-10-01 00:45:51,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 00:45:51,206 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 358 [2018-10-01 00:45:51,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:51,207 INFO L225 Difference]: With dead ends: 363 [2018-10-01 00:45:51,207 INFO L226 Difference]: Without dead ends: 361 [2018-10-01 00:45:51,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:45:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2018-10-01 00:45:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2018-10-01 00:45:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-10-01 00:45:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 361 transitions. [2018-10-01 00:45:51,211 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 361 transitions. Word has length 358 [2018-10-01 00:45:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:51,211 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 361 transitions. [2018-10-01 00:45:51,211 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 00:45:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 361 transitions. [2018-10-01 00:45:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-10-01 00:45:51,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:51,213 INFO L375 BasicCegarLoop]: trace histogram [179, 178, 1, 1, 1] [2018-10-01 00:45:51,213 INFO L423 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:51,213 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:51,213 INFO L82 PathProgramCache]: Analyzing trace with hash -433684325, now seen corresponding path program 178 times [2018-10-01 00:45:51,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:51,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:51,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:51,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:51,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:52,803 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:52,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:52,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:52,810 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:45:52,900 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:45:52,900 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:52,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 31862 backedges. 0 proven. 31862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:53,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:53,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 180 [2018-10-01 00:45:53,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 00:45:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 00:45:53,633 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:53,633 INFO L87 Difference]: Start difference. First operand 361 states and 361 transitions. Second operand 181 states. [2018-10-01 00:45:55,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:45:55,422 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-10-01 00:45:55,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 00:45:55,422 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 360 [2018-10-01 00:45:55,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:45:55,423 INFO L225 Difference]: With dead ends: 365 [2018-10-01 00:45:55,423 INFO L226 Difference]: Without dead ends: 363 [2018-10-01 00:45:55,423 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:45:55,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-01 00:45:55,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-01 00:45:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-01 00:45:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-01 00:45:55,427 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 360 [2018-10-01 00:45:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:45:55,427 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-01 00:45:55,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 00:45:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-01 00:45:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-01 00:45:55,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:45:55,428 INFO L375 BasicCegarLoop]: trace histogram [180, 179, 1, 1, 1] [2018-10-01 00:45:55,429 INFO L423 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:45:55,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:45:55,429 INFO L82 PathProgramCache]: Analyzing trace with hash -158756523, now seen corresponding path program 179 times [2018-10-01 00:45:55,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:45:55,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:45:55,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:55,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:45:55,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:45:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:45:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:56,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:45:56,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:45:56,817 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:45:57,114 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 180 check-sat command(s) [2018-10-01 00:45:57,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:45:57,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:45:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 32220 backedges. 0 proven. 32220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:45:57,992 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:45:57,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 181 [2018-10-01 00:45:57,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 00:45:57,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 00:45:57,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:45:57,995 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 182 states. [2018-10-01 00:46:01,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:01,179 INFO L93 Difference]: Finished difference Result 367 states and 367 transitions. [2018-10-01 00:46:01,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 00:46:01,179 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 362 [2018-10-01 00:46:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:01,180 INFO L225 Difference]: With dead ends: 367 [2018-10-01 00:46:01,180 INFO L226 Difference]: Without dead ends: 365 [2018-10-01 00:46:01,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:01,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-10-01 00:46:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-10-01 00:46:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-01 00:46:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2018-10-01 00:46:01,184 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 362 [2018-10-01 00:46:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:01,184 INFO L480 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2018-10-01 00:46:01,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 00:46:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2018-10-01 00:46:01,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-10-01 00:46:01,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:01,185 INFO L375 BasicCegarLoop]: trace histogram [181, 180, 1, 1, 1] [2018-10-01 00:46:01,185 INFO L423 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:01,186 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:01,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2053856143, now seen corresponding path program 180 times [2018-10-01 00:46:01,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:01,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:01,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:01,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:01,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:02,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:02,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:02,633 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:02,997 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 181 check-sat command(s) [2018-10-01 00:46:02,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:03,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 32580 backedges. 0 proven. 32580 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:03,688 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:03,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 182 [2018-10-01 00:46:03,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 00:46:03,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 00:46:03,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:03,692 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 183 states. [2018-10-01 00:46:07,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:07,141 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-01 00:46:07,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 00:46:07,142 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 364 [2018-10-01 00:46:07,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:07,142 INFO L225 Difference]: With dead ends: 369 [2018-10-01 00:46:07,142 INFO L226 Difference]: Without dead ends: 367 [2018-10-01 00:46:07,143 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 00:46:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-01 00:46:07,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-10-01 00:46:07,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-01 00:46:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-01 00:46:07,147 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 364 [2018-10-01 00:46:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:07,147 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-01 00:46:07,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 00:46:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-01 00:46:07,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-01 00:46:07,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:07,148 INFO L375 BasicCegarLoop]: trace histogram [182, 181, 1, 1, 1] [2018-10-01 00:46:07,148 INFO L423 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:07,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:07,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1929150647, now seen corresponding path program 181 times [2018-10-01 00:46:07,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:07,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:07,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:07,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:07,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:08,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:08,805 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:08,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:08,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 32942 backedges. 0 proven. 32942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:09,626 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:09,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 183 [2018-10-01 00:46:09,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 00:46:09,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 00:46:09,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:09,629 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 184 states. [2018-10-01 00:46:12,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:12,087 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2018-10-01 00:46:12,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 00:46:12,087 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 366 [2018-10-01 00:46:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:12,088 INFO L225 Difference]: With dead ends: 371 [2018-10-01 00:46:12,088 INFO L226 Difference]: Without dead ends: 369 [2018-10-01 00:46:12,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:46:12,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2018-10-01 00:46:12,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2018-10-01 00:46:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2018-10-01 00:46:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2018-10-01 00:46:12,092 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 366 [2018-10-01 00:46:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:12,092 INFO L480 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2018-10-01 00:46:12,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 00:46:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2018-10-01 00:46:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-01 00:46:12,093 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:12,093 INFO L375 BasicCegarLoop]: trace histogram [183, 182, 1, 1, 1] [2018-10-01 00:46:12,094 INFO L423 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:12,094 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:12,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1512152195, now seen corresponding path program 182 times [2018-10-01 00:46:12,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:12,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:12,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:12,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:12,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:13,740 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:13,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:13,741 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:13,748 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:13,836 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:13,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:13,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:14,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33306 backedges. 0 proven. 33306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:14,583 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:14,584 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 184 [2018-10-01 00:46:14,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 00:46:14,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 00:46:14,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:14,586 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand 185 states. [2018-10-01 00:46:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:16,508 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-10-01 00:46:16,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 00:46:16,509 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 368 [2018-10-01 00:46:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:16,509 INFO L225 Difference]: With dead ends: 373 [2018-10-01 00:46:16,509 INFO L226 Difference]: Without dead ends: 371 [2018-10-01 00:46:16,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:46:16,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-01 00:46:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-10-01 00:46:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-01 00:46:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-10-01 00:46:16,513 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 368 [2018-10-01 00:46:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:16,514 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-10-01 00:46:16,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 00:46:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-10-01 00:46:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-01 00:46:16,515 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:16,515 INFO L375 BasicCegarLoop]: trace histogram [184, 183, 1, 1, 1] [2018-10-01 00:46:16,515 INFO L423 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:16,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:16,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1479365437, now seen corresponding path program 183 times [2018-10-01 00:46:16,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:16,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:16,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:16,516 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:16,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:18,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:18,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:18,084 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:18,462 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 184 check-sat command(s) [2018-10-01 00:46:18,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:18,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:19,201 INFO L134 CoverageAnalysis]: Checked inductivity of 33672 backedges. 0 proven. 33672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:19,222 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:19,222 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 185 [2018-10-01 00:46:19,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 00:46:19,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 00:46:19,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:19,225 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 186 states. [2018-10-01 00:46:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:21,093 INFO L93 Difference]: Finished difference Result 375 states and 375 transitions. [2018-10-01 00:46:21,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 00:46:21,093 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 370 [2018-10-01 00:46:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:21,094 INFO L225 Difference]: With dead ends: 375 [2018-10-01 00:46:21,094 INFO L226 Difference]: Without dead ends: 373 [2018-10-01 00:46:21,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2018-10-01 00:46:21,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2018-10-01 00:46:21,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-10-01 00:46:21,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 373 transitions. [2018-10-01 00:46:21,098 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 373 transitions. Word has length 370 [2018-10-01 00:46:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:21,098 INFO L480 AbstractCegarLoop]: Abstraction has 373 states and 373 transitions. [2018-10-01 00:46:21,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 00:46:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 373 transitions. [2018-10-01 00:46:21,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2018-10-01 00:46:21,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:21,099 INFO L375 BasicCegarLoop]: trace histogram [185, 184, 1, 1, 1] [2018-10-01 00:46:21,099 INFO L423 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:21,100 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash 36062071, now seen corresponding path program 184 times [2018-10-01 00:46:21,100 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:21,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:21,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:21,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:21,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:22,599 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:22,599 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:22,607 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:22,697 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:22,697 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:22,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 34040 backedges. 0 proven. 34040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:23,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:23,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 186 [2018-10-01 00:46:23,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 00:46:23,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 00:46:23,652 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:23,652 INFO L87 Difference]: Start difference. First operand 373 states and 373 transitions. Second operand 187 states. [2018-10-01 00:46:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:25,612 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-10-01 00:46:25,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 00:46:25,612 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 372 [2018-10-01 00:46:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:25,613 INFO L225 Difference]: With dead ends: 377 [2018-10-01 00:46:25,613 INFO L226 Difference]: Without dead ends: 375 [2018-10-01 00:46:25,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-01 00:46:25,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-10-01 00:46:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-01 00:46:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-10-01 00:46:25,617 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 372 [2018-10-01 00:46:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:25,617 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-10-01 00:46:25,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 00:46:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-10-01 00:46:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-01 00:46:25,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:25,619 INFO L375 BasicCegarLoop]: trace histogram [186, 185, 1, 1, 1] [2018-10-01 00:46:25,619 INFO L423 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:25,619 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:25,619 INFO L82 PathProgramCache]: Analyzing trace with hash 295963953, now seen corresponding path program 185 times [2018-10-01 00:46:25,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:25,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:25,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:25,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:25,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:27,135 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:27,136 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:27,136 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:27,144 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:46:27,437 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 186 check-sat command(s) [2018-10-01 00:46:27,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:27,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 34410 backedges. 0 proven. 34410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:28,165 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:28,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 187 [2018-10-01 00:46:28,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 00:46:28,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 00:46:28,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:28,169 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 188 states. [2018-10-01 00:46:30,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:30,991 INFO L93 Difference]: Finished difference Result 379 states and 379 transitions. [2018-10-01 00:46:30,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 00:46:30,991 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 374 [2018-10-01 00:46:30,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:30,992 INFO L225 Difference]: With dead ends: 379 [2018-10-01 00:46:30,992 INFO L226 Difference]: Without dead ends: 377 [2018-10-01 00:46:30,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 00:46:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-10-01 00:46:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2018-10-01 00:46:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-10-01 00:46:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 377 transitions. [2018-10-01 00:46:30,996 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 377 transitions. Word has length 374 [2018-10-01 00:46:30,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:30,996 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 377 transitions. [2018-10-01 00:46:30,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 00:46:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 377 transitions. [2018-10-01 00:46:30,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-01 00:46:30,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:30,998 INFO L375 BasicCegarLoop]: trace histogram [187, 186, 1, 1, 1] [2018-10-01 00:46:30,998 INFO L423 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:30,998 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash 953569387, now seen corresponding path program 186 times [2018-10-01 00:46:30,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:30,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:30,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:30,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:30,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:32,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:32,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:32,608 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:46:32,923 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 187 check-sat command(s) [2018-10-01 00:46:32,923 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:32,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 34782 backedges. 0 proven. 34782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:33,872 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:33,872 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 188 [2018-10-01 00:46:33,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 00:46:33,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 00:46:33,874 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:33,875 INFO L87 Difference]: Start difference. First operand 377 states and 377 transitions. Second operand 189 states. [2018-10-01 00:46:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:37,658 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-01 00:46:37,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 00:46:37,658 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 376 [2018-10-01 00:46:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:37,659 INFO L225 Difference]: With dead ends: 381 [2018-10-01 00:46:37,659 INFO L226 Difference]: Without dead ends: 379 [2018-10-01 00:46:37,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-01 00:46:37,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-01 00:46:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-01 00:46:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-01 00:46:37,663 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 376 [2018-10-01 00:46:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:37,663 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-01 00:46:37,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 00:46:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-01 00:46:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-01 00:46:37,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:37,664 INFO L375 BasicCegarLoop]: trace histogram [188, 187, 1, 1, 1] [2018-10-01 00:46:37,665 INFO L423 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:37,665 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:37,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1552198949, now seen corresponding path program 187 times [2018-10-01 00:46:37,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:37,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:37,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:37,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:37,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:39,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:39,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:39,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:39,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 35156 backedges. 0 proven. 35156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:40,247 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:40,247 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 189 [2018-10-01 00:46:40,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 00:46:40,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 00:46:40,250 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:40,250 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 190 states. [2018-10-01 00:46:43,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:43,608 INFO L93 Difference]: Finished difference Result 383 states and 383 transitions. [2018-10-01 00:46:43,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 00:46:43,608 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 378 [2018-10-01 00:46:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:43,609 INFO L225 Difference]: With dead ends: 383 [2018-10-01 00:46:43,609 INFO L226 Difference]: Without dead ends: 381 [2018-10-01 00:46:43,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:43,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-01 00:46:43,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-10-01 00:46:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-01 00:46:43,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 381 transitions. [2018-10-01 00:46:43,613 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 381 transitions. Word has length 378 [2018-10-01 00:46:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:43,613 INFO L480 AbstractCegarLoop]: Abstraction has 381 states and 381 transitions. [2018-10-01 00:46:43,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 00:46:43,614 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 381 transitions. [2018-10-01 00:46:43,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-10-01 00:46:43,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:43,615 INFO L375 BasicCegarLoop]: trace histogram [189, 188, 1, 1, 1] [2018-10-01 00:46:43,615 INFO L423 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:43,615 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:43,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1309590367, now seen corresponding path program 188 times [2018-10-01 00:46:43,615 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:43,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:43,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:43,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:46:43,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:45,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:45,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:45,188 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:46:45,285 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:46:45,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:45,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 35532 backedges. 0 proven. 35532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:46,044 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:46,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 190 [2018-10-01 00:46:46,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 00:46:46,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 00:46:46,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:46,048 INFO L87 Difference]: Start difference. First operand 381 states and 381 transitions. Second operand 191 states. [2018-10-01 00:46:48,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:48,163 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-10-01 00:46:48,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 00:46:48,163 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 380 [2018-10-01 00:46:48,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:48,164 INFO L225 Difference]: With dead ends: 385 [2018-10-01 00:46:48,164 INFO L226 Difference]: Without dead ends: 383 [2018-10-01 00:46:48,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-10-01 00:46:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-10-01 00:46:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-01 00:46:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-10-01 00:46:48,170 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 380 [2018-10-01 00:46:48,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:48,170 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-10-01 00:46:48,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 00:46:48,170 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-10-01 00:46:48,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-01 00:46:48,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:48,171 INFO L375 BasicCegarLoop]: trace histogram [190, 189, 1, 1, 1] [2018-10-01 00:46:48,171 INFO L423 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:48,171 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash 90977049, now seen corresponding path program 189 times [2018-10-01 00:46:48,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:48,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:48,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:48,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:48,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:48,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:50,007 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:50,007 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:50,007 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:50,014 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:46:50,380 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 190 check-sat command(s) [2018-10-01 00:46:50,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:50,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 35910 backedges. 0 proven. 35910 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:51,128 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:51,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 191 [2018-10-01 00:46:51,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 00:46:51,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 00:46:51,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:51,131 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 192 states. [2018-10-01 00:46:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:54,452 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2018-10-01 00:46:54,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 00:46:54,452 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 382 [2018-10-01 00:46:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:54,452 INFO L225 Difference]: With dead ends: 387 [2018-10-01 00:46:54,453 INFO L226 Difference]: Without dead ends: 385 [2018-10-01 00:46:54,453 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:46:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2018-10-01 00:46:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2018-10-01 00:46:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2018-10-01 00:46:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 385 transitions. [2018-10-01 00:46:54,457 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 385 transitions. Word has length 382 [2018-10-01 00:46:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:54,457 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 385 transitions. [2018-10-01 00:46:54,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 00:46:54,457 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 385 transitions. [2018-10-01 00:46:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-10-01 00:46:54,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:54,458 INFO L375 BasicCegarLoop]: trace histogram [191, 190, 1, 1, 1] [2018-10-01 00:46:54,458 INFO L423 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:54,459 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:54,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1529650259, now seen corresponding path program 190 times [2018-10-01 00:46:54,459 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:54,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:54,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:54,460 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:54,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:46:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:56,062 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:46:56,062 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:46:56,071 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:46:56,168 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:46:56,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:46:56,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:46:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 36290 backedges. 0 proven. 36290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:46:56,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:46:56,924 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 192 [2018-10-01 00:46:56,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 00:46:56,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 00:46:56,926 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:46:56,926 INFO L87 Difference]: Start difference. First operand 385 states and 385 transitions. Second operand 193 states. [2018-10-01 00:46:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:46:59,288 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-10-01 00:46:59,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 00:46:59,288 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 384 [2018-10-01 00:46:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:46:59,289 INFO L225 Difference]: With dead ends: 389 [2018-10-01 00:46:59,289 INFO L226 Difference]: Without dead ends: 387 [2018-10-01 00:46:59,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:46:59,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-01 00:46:59,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-10-01 00:46:59,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-10-01 00:46:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-10-01 00:46:59,294 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 384 [2018-10-01 00:46:59,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:46:59,294 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-10-01 00:46:59,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 00:46:59,294 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-10-01 00:46:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-01 00:46:59,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:46:59,295 INFO L375 BasicCegarLoop]: trace histogram [192, 191, 1, 1, 1] [2018-10-01 00:46:59,296 INFO L423 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:46:59,296 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:46:59,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1115135757, now seen corresponding path program 191 times [2018-10-01 00:46:59,296 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:46:59,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:46:59,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:59,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:46:59,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:46:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:00,884 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:00,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:00,897 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:47:01,209 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 192 check-sat command(s) [2018-10-01 00:47:01,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:01,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 36672 backedges. 0 proven. 36672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:01,942 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:01,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 193 [2018-10-01 00:47:01,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 00:47:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 00:47:01,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:01,945 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 194 states. [2018-10-01 00:47:04,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:04,908 INFO L93 Difference]: Finished difference Result 391 states and 391 transitions. [2018-10-01 00:47:04,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 00:47:04,908 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 386 [2018-10-01 00:47:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:04,909 INFO L225 Difference]: With dead ends: 391 [2018-10-01 00:47:04,909 INFO L226 Difference]: Without dead ends: 389 [2018-10-01 00:47:04,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:47:04,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2018-10-01 00:47:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2018-10-01 00:47:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 389 states. [2018-10-01 00:47:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 389 transitions. [2018-10-01 00:47:04,914 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 389 transitions. Word has length 386 [2018-10-01 00:47:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:04,914 INFO L480 AbstractCegarLoop]: Abstraction has 389 states and 389 transitions. [2018-10-01 00:47:04,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 00:47:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 389 transitions. [2018-10-01 00:47:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-10-01 00:47:04,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:04,916 INFO L375 BasicCegarLoop]: trace histogram [193, 192, 1, 1, 1] [2018-10-01 00:47:04,916 INFO L423 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:04,916 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:04,916 INFO L82 PathProgramCache]: Analyzing trace with hash -2096309433, now seen corresponding path program 192 times [2018-10-01 00:47:04,916 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:04,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:04,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:04,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:04,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:06,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:06,546 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:06,558 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:47:06,881 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 193 check-sat command(s) [2018-10-01 00:47:06,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:06,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 37056 backedges. 0 proven. 37056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:07,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:07,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-10-01 00:47:07,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 00:47:07,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 00:47:07,644 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:07,644 INFO L87 Difference]: Start difference. First operand 389 states and 389 transitions. Second operand 195 states. [2018-10-01 00:47:09,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:09,794 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-10-01 00:47:09,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 00:47:09,794 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 388 [2018-10-01 00:47:09,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:09,795 INFO L225 Difference]: With dead ends: 393 [2018-10-01 00:47:09,795 INFO L226 Difference]: Without dead ends: 391 [2018-10-01 00:47:09,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:47:09,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-01 00:47:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-10-01 00:47:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-01 00:47:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-10-01 00:47:09,800 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 388 [2018-10-01 00:47:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:09,800 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-10-01 00:47:09,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 00:47:09,800 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-10-01 00:47:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-01 00:47:09,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:09,802 INFO L375 BasicCegarLoop]: trace histogram [194, 193, 1, 1, 1] [2018-10-01 00:47:09,802 INFO L423 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:09,802 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:09,802 INFO L82 PathProgramCache]: Analyzing trace with hash -213651199, now seen corresponding path program 193 times [2018-10-01 00:47:09,802 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:09,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:09,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:09,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:09,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:11,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:11,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:11,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:11,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 37442 backedges. 0 proven. 37442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:12,267 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:12,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-10-01 00:47:12,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 00:47:12,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 00:47:12,270 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:12,270 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 196 states. [2018-10-01 00:47:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:16,022 INFO L93 Difference]: Finished difference Result 395 states and 395 transitions. [2018-10-01 00:47:16,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 00:47:16,022 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 390 [2018-10-01 00:47:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:16,023 INFO L225 Difference]: With dead ends: 395 [2018-10-01 00:47:16,023 INFO L226 Difference]: Without dead ends: 393 [2018-10-01 00:47:16,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 00:47:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2018-10-01 00:47:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2018-10-01 00:47:16,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-10-01 00:47:16,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2018-10-01 00:47:16,027 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 390 [2018-10-01 00:47:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:16,027 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2018-10-01 00:47:16,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 00:47:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2018-10-01 00:47:16,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-01 00:47:16,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:16,029 INFO L375 BasicCegarLoop]: trace histogram [195, 194, 1, 1, 1] [2018-10-01 00:47:16,029 INFO L423 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:16,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:16,029 INFO L82 PathProgramCache]: Analyzing trace with hash 839680059, now seen corresponding path program 194 times [2018-10-01 00:47:16,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:16,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:16,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:16,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:16,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:17,675 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:17,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:17,676 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:17,682 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:47:17,780 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:47:17,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:17,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 37830 backedges. 0 proven. 37830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:18,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:18,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-10-01 00:47:18,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 00:47:18,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 00:47:18,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:18,621 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand 197 states. [2018-10-01 00:47:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:22,421 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-10-01 00:47:22,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 00:47:22,421 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 392 [2018-10-01 00:47:22,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:22,422 INFO L225 Difference]: With dead ends: 397 [2018-10-01 00:47:22,422 INFO L226 Difference]: Without dead ends: 395 [2018-10-01 00:47:22,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 00:47:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-10-01 00:47:22,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-10-01 00:47:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-10-01 00:47:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-10-01 00:47:22,427 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 392 [2018-10-01 00:47:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:22,427 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-10-01 00:47:22,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 00:47:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-10-01 00:47:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-01 00:47:22,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:22,428 INFO L375 BasicCegarLoop]: trace histogram [196, 195, 1, 1, 1] [2018-10-01 00:47:22,428 INFO L423 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:22,429 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:22,429 INFO L82 PathProgramCache]: Analyzing trace with hash -521262859, now seen corresponding path program 195 times [2018-10-01 00:47:22,429 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:22,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:22,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:22,429 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:22,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:24,195 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:24,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:24,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:24,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:47:24,624 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 196 check-sat command(s) [2018-10-01 00:47:24,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:24,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 38220 backedges. 0 proven. 38220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:25,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:25,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-10-01 00:47:25,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 00:47:25,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 00:47:25,536 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:25,536 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 198 states. [2018-10-01 00:47:28,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:28,185 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2018-10-01 00:47:28,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 00:47:28,185 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 394 [2018-10-01 00:47:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:28,186 INFO L225 Difference]: With dead ends: 399 [2018-10-01 00:47:28,186 INFO L226 Difference]: Without dead ends: 397 [2018-10-01 00:47:28,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:28,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2018-10-01 00:47:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2018-10-01 00:47:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2018-10-01 00:47:28,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2018-10-01 00:47:28,191 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 394 [2018-10-01 00:47:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:28,191 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2018-10-01 00:47:28,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 00:47:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2018-10-01 00:47:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-10-01 00:47:28,192 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:28,192 INFO L375 BasicCegarLoop]: trace histogram [197, 196, 1, 1, 1] [2018-10-01 00:47:28,193 INFO L423 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:28,193 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1577618223, now seen corresponding path program 196 times [2018-10-01 00:47:28,193 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:28,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:28,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:28,194 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:28,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:30,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:30,101 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:30,110 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:47:30,206 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:47:30,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:30,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 38612 backedges. 0 proven. 38612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:31,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:31,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-10-01 00:47:31,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 00:47:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 00:47:31,036 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:31,036 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand 199 states. [2018-10-01 00:47:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:33,338 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-10-01 00:47:33,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 00:47:33,338 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 396 [2018-10-01 00:47:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:33,338 INFO L225 Difference]: With dead ends: 401 [2018-10-01 00:47:33,339 INFO L226 Difference]: Without dead ends: 399 [2018-10-01 00:47:33,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:33,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-01 00:47:33,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-10-01 00:47:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-10-01 00:47:33,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-10-01 00:47:33,343 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 396 [2018-10-01 00:47:33,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:33,343 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-10-01 00:47:33,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 00:47:33,343 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-10-01 00:47:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-01 00:47:33,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:33,345 INFO L375 BasicCegarLoop]: trace histogram [198, 197, 1, 1, 1] [2018-10-01 00:47:33,345 INFO L423 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:33,345 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash -32291095, now seen corresponding path program 197 times [2018-10-01 00:47:33,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:33,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:33,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:33,346 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:33,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:35,205 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:35,205 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:35,213 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:47:35,545 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 198 check-sat command(s) [2018-10-01 00:47:35,546 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:35,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 39006 backedges. 0 proven. 39006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:36,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:36,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-10-01 00:47:36,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 00:47:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 00:47:36,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:36,380 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 200 states. [2018-10-01 00:47:38,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:38,804 INFO L93 Difference]: Finished difference Result 403 states and 403 transitions. [2018-10-01 00:47:38,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 00:47:38,804 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 398 [2018-10-01 00:47:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:38,805 INFO L225 Difference]: With dead ends: 403 [2018-10-01 00:47:38,805 INFO L226 Difference]: Without dead ends: 401 [2018-10-01 00:47:38,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2018-10-01 00:47:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2018-10-01 00:47:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2018-10-01 00:47:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2018-10-01 00:47:38,809 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 398 [2018-10-01 00:47:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:38,809 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2018-10-01 00:47:38,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 00:47:38,809 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2018-10-01 00:47:38,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-01 00:47:38,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:38,810 INFO L375 BasicCegarLoop]: trace histogram [199, 198, 1, 1, 1] [2018-10-01 00:47:38,811 INFO L423 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:38,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:38,811 INFO L82 PathProgramCache]: Analyzing trace with hash -966919133, now seen corresponding path program 198 times [2018-10-01 00:47:38,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:38,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:38,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:38,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:38,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:40,669 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:40,670 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:40,670 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:40,677 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:47:41,029 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 199 check-sat command(s) [2018-10-01 00:47:41,030 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:41,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 39402 backedges. 0 proven. 39402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:41,824 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:41,824 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-10-01 00:47:41,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 00:47:41,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 00:47:41,828 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:41,828 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 201 states. [2018-10-01 00:47:44,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:44,265 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-10-01 00:47:44,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 00:47:44,265 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 400 [2018-10-01 00:47:44,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:44,266 INFO L225 Difference]: With dead ends: 405 [2018-10-01 00:47:44,266 INFO L226 Difference]: Without dead ends: 403 [2018-10-01 00:47:44,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 400 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:47:44,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-10-01 00:47:44,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-10-01 00:47:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-10-01 00:47:44,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-10-01 00:47:44,270 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 400 [2018-10-01 00:47:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:44,270 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-10-01 00:47:44,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 00:47:44,271 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-10-01 00:47:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-01 00:47:44,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:44,272 INFO L375 BasicCegarLoop]: trace histogram [200, 199, 1, 1, 1] [2018-10-01 00:47:44,272 INFO L423 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:44,272 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1496298787, now seen corresponding path program 199 times [2018-10-01 00:47:44,272 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:44,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:44,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:44,273 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:44,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:46,217 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:46,217 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:46,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:46,330 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 39800 backedges. 0 proven. 39800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:47,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:47,093 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-10-01 00:47:47,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 00:47:47,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 00:47:47,095 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:47,096 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 202 states. [2018-10-01 00:47:49,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:49,684 INFO L93 Difference]: Finished difference Result 407 states and 407 transitions. [2018-10-01 00:47:49,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 00:47:49,684 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 402 [2018-10-01 00:47:49,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:49,685 INFO L225 Difference]: With dead ends: 407 [2018-10-01 00:47:49,685 INFO L226 Difference]: Without dead ends: 405 [2018-10-01 00:47:49,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:47:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2018-10-01 00:47:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2018-10-01 00:47:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2018-10-01 00:47:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 405 transitions. [2018-10-01 00:47:49,690 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 405 transitions. Word has length 402 [2018-10-01 00:47:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:49,690 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 405 transitions. [2018-10-01 00:47:49,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 00:47:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 405 transitions. [2018-10-01 00:47:49,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-01 00:47:49,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:49,692 INFO L375 BasicCegarLoop]: trace histogram [201, 200, 1, 1, 1] [2018-10-01 00:47:49,692 INFO L423 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:49,692 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:49,692 INFO L82 PathProgramCache]: Analyzing trace with hash 870961943, now seen corresponding path program 200 times [2018-10-01 00:47:49,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:49,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:49,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:49,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:47:49,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:51,781 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:51,781 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:51,788 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:47:51,894 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:47:51,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:51,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:52,705 INFO L134 CoverageAnalysis]: Checked inductivity of 40200 backedges. 0 proven. 40200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:52,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:52,726 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-10-01 00:47:52,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 00:47:52,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 00:47:52,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:52,730 INFO L87 Difference]: Start difference. First operand 405 states and 405 transitions. Second operand 203 states. [2018-10-01 00:47:55,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:47:55,941 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-01 00:47:55,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 00:47:55,941 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 404 [2018-10-01 00:47:55,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:47:55,942 INFO L225 Difference]: With dead ends: 409 [2018-10-01 00:47:55,942 INFO L226 Difference]: Without dead ends: 407 [2018-10-01 00:47:55,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:47:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-01 00:47:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-10-01 00:47:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-10-01 00:47:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-10-01 00:47:55,946 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 404 [2018-10-01 00:47:55,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:47:55,946 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-10-01 00:47:55,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 00:47:55,946 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-10-01 00:47:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-01 00:47:55,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:47:55,948 INFO L375 BasicCegarLoop]: trace histogram [202, 201, 1, 1, 1] [2018-10-01 00:47:55,948 INFO L423 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:47:55,948 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:47:55,948 INFO L82 PathProgramCache]: Analyzing trace with hash -524143407, now seen corresponding path program 201 times [2018-10-01 00:47:55,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:47:55,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:47:55,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:55,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:47:55,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:47:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:47:57,682 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:57,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:47:57,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:47:57,690 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:47:58,110 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 202 check-sat command(s) [2018-10-01 00:47:58,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:47:58,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:47:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 40602 backedges. 0 proven. 40602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:47:58,956 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:47:58,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 203 [2018-10-01 00:47:58,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 00:47:58,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 00:47:58,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:47:58,960 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 204 states. [2018-10-01 00:48:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:03,505 INFO L93 Difference]: Finished difference Result 411 states and 411 transitions. [2018-10-01 00:48:03,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 00:48:03,505 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 406 [2018-10-01 00:48:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:03,506 INFO L225 Difference]: With dead ends: 411 [2018-10-01 00:48:03,506 INFO L226 Difference]: Without dead ends: 409 [2018-10-01 00:48:03,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:48:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2018-10-01 00:48:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2018-10-01 00:48:03,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2018-10-01 00:48:03,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 409 transitions. [2018-10-01 00:48:03,510 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 409 transitions. Word has length 406 [2018-10-01 00:48:03,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:03,511 INFO L480 AbstractCegarLoop]: Abstraction has 409 states and 409 transitions. [2018-10-01 00:48:03,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 00:48:03,511 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 409 transitions. [2018-10-01 00:48:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-01 00:48:03,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:03,512 INFO L375 BasicCegarLoop]: trace histogram [203, 202, 1, 1, 1] [2018-10-01 00:48:03,512 INFO L423 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:03,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:03,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1190588405, now seen corresponding path program 202 times [2018-10-01 00:48:03,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:03,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:03,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:03,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:03,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:05,377 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:05,377 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:05,384 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:48:05,486 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:48:05,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:05,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:06,422 INFO L134 CoverageAnalysis]: Checked inductivity of 41006 backedges. 0 proven. 41006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:06,443 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:06,443 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 204 [2018-10-01 00:48:06,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 00:48:06,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 00:48:06,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:06,447 INFO L87 Difference]: Start difference. First operand 409 states and 409 transitions. Second operand 205 states. [2018-10-01 00:48:09,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:09,884 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-10-01 00:48:09,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 00:48:09,884 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 408 [2018-10-01 00:48:09,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:09,885 INFO L225 Difference]: With dead ends: 413 [2018-10-01 00:48:09,885 INFO L226 Difference]: Without dead ends: 411 [2018-10-01 00:48:09,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:48:09,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-10-01 00:48:09,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-10-01 00:48:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-10-01 00:48:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-10-01 00:48:09,891 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 408 [2018-10-01 00:48:09,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:09,892 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-10-01 00:48:09,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 00:48:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-10-01 00:48:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-01 00:48:09,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:09,894 INFO L375 BasicCegarLoop]: trace histogram [204, 203, 1, 1, 1] [2018-10-01 00:48:09,894 INFO L423 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:09,894 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:09,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1694104379, now seen corresponding path program 203 times [2018-10-01 00:48:09,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:09,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:09,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:09,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:09,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:11,928 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:11,928 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:11,935 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:48:12,285 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 204 check-sat command(s) [2018-10-01 00:48:12,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:12,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 41412 backedges. 0 proven. 41412 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:13,172 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:13,173 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 205 [2018-10-01 00:48:13,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 00:48:13,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 00:48:13,176 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:13,176 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 206 states. [2018-10-01 00:48:16,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:16,009 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2018-10-01 00:48:16,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 00:48:16,009 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 410 [2018-10-01 00:48:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:16,010 INFO L225 Difference]: With dead ends: 415 [2018-10-01 00:48:16,010 INFO L226 Difference]: Without dead ends: 413 [2018-10-01 00:48:16,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2018-10-01 00:48:16,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2018-10-01 00:48:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2018-10-01 00:48:16,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 413 transitions. [2018-10-01 00:48:16,014 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 413 transitions. Word has length 410 [2018-10-01 00:48:16,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:16,015 INFO L480 AbstractCegarLoop]: Abstraction has 413 states and 413 transitions. [2018-10-01 00:48:16,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 00:48:16,015 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 413 transitions. [2018-10-01 00:48:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-01 00:48:16,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:16,016 INFO L375 BasicCegarLoop]: trace histogram [205, 204, 1, 1, 1] [2018-10-01 00:48:16,016 INFO L423 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:16,016 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:16,017 INFO L82 PathProgramCache]: Analyzing trace with hash -241650945, now seen corresponding path program 204 times [2018-10-01 00:48:16,017 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:16,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:16,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:16,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:16,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:17,851 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:17,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:17,858 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:48:18,210 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 205 check-sat command(s) [2018-10-01 00:48:18,210 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:18,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 41820 backedges. 0 proven. 41820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:19,036 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:19,036 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 206 [2018-10-01 00:48:19,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 00:48:19,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 00:48:19,039 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:19,039 INFO L87 Difference]: Start difference. First operand 413 states and 413 transitions. Second operand 207 states. [2018-10-01 00:48:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:23,667 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-10-01 00:48:23,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 00:48:23,667 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 412 [2018-10-01 00:48:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:23,668 INFO L225 Difference]: With dead ends: 417 [2018-10-01 00:48:23,668 INFO L226 Difference]: Without dead ends: 415 [2018-10-01 00:48:23,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:48:23,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-01 00:48:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-10-01 00:48:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-10-01 00:48:23,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-10-01 00:48:23,674 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 412 [2018-10-01 00:48:23,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:23,674 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-10-01 00:48:23,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 00:48:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-10-01 00:48:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-01 00:48:23,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:23,676 INFO L375 BasicCegarLoop]: trace histogram [206, 205, 1, 1, 1] [2018-10-01 00:48:23,676 INFO L423 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:23,676 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:23,676 INFO L82 PathProgramCache]: Analyzing trace with hash -298272071, now seen corresponding path program 205 times [2018-10-01 00:48:23,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:23,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:23,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:23,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:23,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:25,547 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:25,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:25,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:25,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:26,652 INFO L134 CoverageAnalysis]: Checked inductivity of 42230 backedges. 0 proven. 42230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:26,673 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:26,673 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 207 [2018-10-01 00:48:26,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 00:48:26,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 00:48:26,676 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:26,676 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 208 states. [2018-10-01 00:48:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:29,642 INFO L93 Difference]: Finished difference Result 419 states and 419 transitions. [2018-10-01 00:48:29,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 00:48:29,643 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 414 [2018-10-01 00:48:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:29,643 INFO L225 Difference]: With dead ends: 419 [2018-10-01 00:48:29,643 INFO L226 Difference]: Without dead ends: 417 [2018-10-01 00:48:29,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:29,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2018-10-01 00:48:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2018-10-01 00:48:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2018-10-01 00:48:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 417 transitions. [2018-10-01 00:48:29,648 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 417 transitions. Word has length 414 [2018-10-01 00:48:29,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:29,648 INFO L480 AbstractCegarLoop]: Abstraction has 417 states and 417 transitions. [2018-10-01 00:48:29,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 00:48:29,648 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 417 transitions. [2018-10-01 00:48:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-10-01 00:48:29,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:29,650 INFO L375 BasicCegarLoop]: trace histogram [207, 206, 1, 1, 1] [2018-10-01 00:48:29,650 INFO L423 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:29,650 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:29,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1123400691, now seen corresponding path program 206 times [2018-10-01 00:48:29,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:29,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:29,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:29,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:48:29,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:31,615 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:31,615 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:31,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:48:31,724 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:48:31,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:31,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 42642 backedges. 0 proven. 42642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:32,612 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:32,612 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 208 [2018-10-01 00:48:32,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 00:48:32,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 00:48:32,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:32,615 INFO L87 Difference]: Start difference. First operand 417 states and 417 transitions. Second operand 209 states. [2018-10-01 00:48:36,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:36,516 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-10-01 00:48:36,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 00:48:36,516 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 416 [2018-10-01 00:48:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:36,517 INFO L225 Difference]: With dead ends: 421 [2018-10-01 00:48:36,517 INFO L226 Difference]: Without dead ends: 419 [2018-10-01 00:48:36,518 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 416 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-01 00:48:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-10-01 00:48:36,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-01 00:48:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-10-01 00:48:36,522 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 416 [2018-10-01 00:48:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:36,522 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-10-01 00:48:36,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 00:48:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-10-01 00:48:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-01 00:48:36,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:36,524 INFO L375 BasicCegarLoop]: trace histogram [208, 207, 1, 1, 1] [2018-10-01 00:48:36,524 INFO L423 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:36,524 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:36,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1551324845, now seen corresponding path program 207 times [2018-10-01 00:48:36,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:36,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:36,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:36,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:36,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:38,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:38,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:38,464 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:48:38,922 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 208 check-sat command(s) [2018-10-01 00:48:38,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:38,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 43056 backedges. 0 proven. 43056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:39,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:39,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209] total 209 [2018-10-01 00:48:39,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 210 states [2018-10-01 00:48:39,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 210 interpolants. [2018-10-01 00:48:39,749 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:39,749 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 210 states. [2018-10-01 00:48:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:44,275 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2018-10-01 00:48:44,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2018-10-01 00:48:44,275 INFO L78 Accepts]: Start accepts. Automaton has 210 states. Word has length 418 [2018-10-01 00:48:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:44,276 INFO L225 Difference]: With dead ends: 423 [2018-10-01 00:48:44,276 INFO L226 Difference]: Without dead ends: 421 [2018-10-01 00:48:44,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:48:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2018-10-01 00:48:44,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2018-10-01 00:48:44,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2018-10-01 00:48:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2018-10-01 00:48:44,281 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 418 [2018-10-01 00:48:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:44,281 INFO L480 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2018-10-01 00:48:44,281 INFO L481 AbstractCegarLoop]: Interpolant automaton has 210 states. [2018-10-01 00:48:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2018-10-01 00:48:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2018-10-01 00:48:44,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:44,282 INFO L375 BasicCegarLoop]: trace histogram [209, 208, 1, 1, 1] [2018-10-01 00:48:44,283 INFO L423 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:44,283 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash 469576423, now seen corresponding path program 208 times [2018-10-01 00:48:44,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:44,283 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:44,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:44,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:44,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:46,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:46,296 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:46,303 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:48:46,405 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:48:46,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:46,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 43472 backedges. 0 proven. 43472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:47,401 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:47,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [210, 210] total 210 [2018-10-01 00:48:47,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 211 states [2018-10-01 00:48:47,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 211 interpolants. [2018-10-01 00:48:47,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:47,405 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand 211 states. [2018-10-01 00:48:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:50,742 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-10-01 00:48:50,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2018-10-01 00:48:50,742 INFO L78 Accepts]: Start accepts. Automaton has 211 states. Word has length 420 [2018-10-01 00:48:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:50,743 INFO L225 Difference]: With dead ends: 425 [2018-10-01 00:48:50,743 INFO L226 Difference]: Without dead ends: 423 [2018-10-01 00:48:50,743 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:48:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-10-01 00:48:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-10-01 00:48:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-10-01 00:48:50,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-10-01 00:48:50,748 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 420 [2018-10-01 00:48:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:50,748 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-10-01 00:48:50,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 211 states. [2018-10-01 00:48:50,748 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-10-01 00:48:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-01 00:48:50,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:50,749 INFO L375 BasicCegarLoop]: trace histogram [210, 209, 1, 1, 1] [2018-10-01 00:48:50,750 INFO L423 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:50,750 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:50,750 INFO L82 PathProgramCache]: Analyzing trace with hash 291428513, now seen corresponding path program 209 times [2018-10-01 00:48:50,750 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:50,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:50,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:50,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:50,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:52,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:52,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:52,899 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:48:53,261 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 210 check-sat command(s) [2018-10-01 00:48:53,261 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:53,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:48:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 43890 backedges. 0 proven. 43890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:54,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:48:54,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211] total 211 [2018-10-01 00:48:54,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 212 states [2018-10-01 00:48:54,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 212 interpolants. [2018-10-01 00:48:54,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:48:54,115 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 212 states. [2018-10-01 00:48:56,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:48:56,944 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2018-10-01 00:48:56,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2018-10-01 00:48:56,945 INFO L78 Accepts]: Start accepts. Automaton has 212 states. Word has length 422 [2018-10-01 00:48:56,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:48:56,945 INFO L225 Difference]: With dead ends: 427 [2018-10-01 00:48:56,945 INFO L226 Difference]: Without dead ends: 425 [2018-10-01 00:48:56,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:48:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2018-10-01 00:48:56,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2018-10-01 00:48:56,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2018-10-01 00:48:56,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2018-10-01 00:48:56,949 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 422 [2018-10-01 00:48:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:48:56,949 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2018-10-01 00:48:56,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 212 states. [2018-10-01 00:48:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2018-10-01 00:48:56,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-10-01 00:48:56,951 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:48:56,951 INFO L375 BasicCegarLoop]: trace histogram [211, 210, 1, 1, 1] [2018-10-01 00:48:56,951 INFO L423 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:48:56,951 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:48:56,951 INFO L82 PathProgramCache]: Analyzing trace with hash 889978843, now seen corresponding path program 210 times [2018-10-01 00:48:56,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:48:56,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:48:56,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:56,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:48:56,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:48:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:48:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:48:58,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:48:58,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:48:58,840 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:48:59,208 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 211 check-sat command(s) [2018-10-01 00:48:59,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:48:59,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 44310 backedges. 0 proven. 44310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:00,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:00,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [212, 212] total 212 [2018-10-01 00:49:00,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 213 states [2018-10-01 00:49:00,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 213 interpolants. [2018-10-01 00:49:00,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:00,043 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand 213 states. [2018-10-01 00:49:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:04,624 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-10-01 00:49:04,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2018-10-01 00:49:04,625 INFO L78 Accepts]: Start accepts. Automaton has 213 states. Word has length 424 [2018-10-01 00:49:04,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:04,625 INFO L225 Difference]: With dead ends: 429 [2018-10-01 00:49:04,625 INFO L226 Difference]: Without dead ends: 427 [2018-10-01 00:49:04,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 00:49:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-10-01 00:49:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-10-01 00:49:04,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-10-01 00:49:04,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-10-01 00:49:04,630 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 424 [2018-10-01 00:49:04,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:04,630 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-10-01 00:49:04,630 INFO L481 AbstractCegarLoop]: Interpolant automaton has 213 states. [2018-10-01 00:49:04,630 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-10-01 00:49:04,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-01 00:49:04,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:04,632 INFO L375 BasicCegarLoop]: trace histogram [212, 211, 1, 1, 1] [2018-10-01 00:49:04,632 INFO L423 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:04,632 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:04,632 INFO L82 PathProgramCache]: Analyzing trace with hash 571228309, now seen corresponding path program 211 times [2018-10-01 00:49:04,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:04,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:04,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:04,633 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:04,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:06,499 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:06,499 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:06,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:06,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 44732 backedges. 0 proven. 44732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:07,732 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:07,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213] total 213 [2018-10-01 00:49:07,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 214 states [2018-10-01 00:49:07,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 214 interpolants. [2018-10-01 00:49:07,736 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:07,736 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 214 states. [2018-10-01 00:49:12,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:12,070 INFO L93 Difference]: Finished difference Result 431 states and 431 transitions. [2018-10-01 00:49:12,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2018-10-01 00:49:12,071 INFO L78 Accepts]: Start accepts. Automaton has 214 states. Word has length 426 [2018-10-01 00:49:12,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:12,071 INFO L225 Difference]: With dead ends: 431 [2018-10-01 00:49:12,071 INFO L226 Difference]: Without dead ends: 429 [2018-10-01 00:49:12,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:49:12,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-10-01 00:49:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2018-10-01 00:49:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2018-10-01 00:49:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 429 transitions. [2018-10-01 00:49:12,076 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 429 transitions. Word has length 426 [2018-10-01 00:49:12,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:12,076 INFO L480 AbstractCegarLoop]: Abstraction has 429 states and 429 transitions. [2018-10-01 00:49:12,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 214 states. [2018-10-01 00:49:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 429 transitions. [2018-10-01 00:49:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2018-10-01 00:49:12,078 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:12,078 INFO L375 BasicCegarLoop]: trace histogram [213, 212, 1, 1, 1] [2018-10-01 00:49:12,078 INFO L423 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:12,078 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash -805356849, now seen corresponding path program 212 times [2018-10-01 00:49:12,078 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:12,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:12,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:12,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:12,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:14,056 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:14,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:14,063 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:49:14,171 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:49:14,171 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:14,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:14,994 INFO L134 CoverageAnalysis]: Checked inductivity of 45156 backedges. 0 proven. 45156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:15,014 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:15,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214] total 214 [2018-10-01 00:49:15,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 215 states [2018-10-01 00:49:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2018-10-01 00:49:15,019 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:15,019 INFO L87 Difference]: Start difference. First operand 429 states and 429 transitions. Second operand 215 states. [2018-10-01 00:49:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:19,584 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-10-01 00:49:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. [2018-10-01 00:49:19,584 INFO L78 Accepts]: Start accepts. Automaton has 215 states. Word has length 428 [2018-10-01 00:49:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:19,585 INFO L225 Difference]: With dead ends: 433 [2018-10-01 00:49:19,585 INFO L226 Difference]: Without dead ends: 431 [2018-10-01 00:49:19,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 00:49:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-10-01 00:49:19,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-10-01 00:49:19,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-10-01 00:49:19,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-10-01 00:49:19,589 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 428 [2018-10-01 00:49:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:19,589 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-10-01 00:49:19,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 215 states. [2018-10-01 00:49:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-10-01 00:49:19,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-10-01 00:49:19,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:19,591 INFO L375 BasicCegarLoop]: trace histogram [214, 213, 1, 1, 1] [2018-10-01 00:49:19,591 INFO L423 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:19,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:19,591 INFO L82 PathProgramCache]: Analyzing trace with hash -853766519, now seen corresponding path program 213 times [2018-10-01 00:49:19,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:19,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:19,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:19,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:19,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:21,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:21,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:21,691 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:49:22,189 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 214 check-sat command(s) [2018-10-01 00:49:22,189 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:22,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 45582 backedges. 0 proven. 45582 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:23,245 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:23,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [215, 215] total 215 [2018-10-01 00:49:23,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 216 states [2018-10-01 00:49:23,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2018-10-01 00:49:23,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:23,248 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 216 states. [2018-10-01 00:49:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:26,897 INFO L93 Difference]: Finished difference Result 435 states and 435 transitions. [2018-10-01 00:49:26,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2018-10-01 00:49:26,897 INFO L78 Accepts]: Start accepts. Automaton has 216 states. Word has length 430 [2018-10-01 00:49:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:26,898 INFO L225 Difference]: With dead ends: 435 [2018-10-01 00:49:26,898 INFO L226 Difference]: Without dead ends: 433 [2018-10-01 00:49:26,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2018-10-01 00:49:26,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 433. [2018-10-01 00:49:26,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 433 states. [2018-10-01 00:49:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 433 transitions. [2018-10-01 00:49:26,902 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 433 transitions. Word has length 430 [2018-10-01 00:49:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:26,902 INFO L480 AbstractCegarLoop]: Abstraction has 433 states and 433 transitions. [2018-10-01 00:49:26,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 216 states. [2018-10-01 00:49:26,903 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 433 transitions. [2018-10-01 00:49:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2018-10-01 00:49:26,904 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:26,904 INFO L375 BasicCegarLoop]: trace histogram [215, 214, 1, 1, 1] [2018-10-01 00:49:26,904 INFO L423 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:26,904 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:26,904 INFO L82 PathProgramCache]: Analyzing trace with hash -130819133, now seen corresponding path program 214 times [2018-10-01 00:49:26,904 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:26,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:26,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:26,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:26,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:29,073 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:29,073 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:29,081 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:49:29,185 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:49:29,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:29,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 0 proven. 46010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:30,096 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:30,097 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [216, 216] total 216 [2018-10-01 00:49:30,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 217 states [2018-10-01 00:49:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 217 interpolants. [2018-10-01 00:49:30,100 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:30,100 INFO L87 Difference]: Start difference. First operand 433 states and 433 transitions. Second operand 217 states. [2018-10-01 00:49:33,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:33,999 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-10-01 00:49:34,000 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 217 states. [2018-10-01 00:49:34,000 INFO L78 Accepts]: Start accepts. Automaton has 217 states. Word has length 432 [2018-10-01 00:49:34,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:34,001 INFO L225 Difference]: With dead ends: 437 [2018-10-01 00:49:34,001 INFO L226 Difference]: Without dead ends: 435 [2018-10-01 00:49:34,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:49:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-10-01 00:49:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-10-01 00:49:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-10-01 00:49:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-10-01 00:49:34,007 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 432 [2018-10-01 00:49:34,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:34,007 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-10-01 00:49:34,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 217 states. [2018-10-01 00:49:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-10-01 00:49:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-01 00:49:34,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:34,010 INFO L375 BasicCegarLoop]: trace histogram [216, 215, 1, 1, 1] [2018-10-01 00:49:34,010 INFO L423 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:34,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:34,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1163083139, now seen corresponding path program 215 times [2018-10-01 00:49:34,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:34,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:34,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:34,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:34,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:36,025 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:36,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:36,038 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:49:36,448 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 216 check-sat command(s) [2018-10-01 00:49:36,448 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:36,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:37,361 INFO L134 CoverageAnalysis]: Checked inductivity of 46440 backedges. 0 proven. 46440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:37,382 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:37,382 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [217, 217] total 217 [2018-10-01 00:49:37,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 218 states [2018-10-01 00:49:37,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 218 interpolants. [2018-10-01 00:49:37,386 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:37,386 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 218 states. [2018-10-01 00:49:40,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:40,503 INFO L93 Difference]: Finished difference Result 439 states and 439 transitions. [2018-10-01 00:49:40,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2018-10-01 00:49:40,504 INFO L78 Accepts]: Start accepts. Automaton has 218 states. Word has length 434 [2018-10-01 00:49:40,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:40,505 INFO L225 Difference]: With dead ends: 439 [2018-10-01 00:49:40,505 INFO L226 Difference]: Without dead ends: 437 [2018-10-01 00:49:40,505 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:49:40,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2018-10-01 00:49:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2018-10-01 00:49:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2018-10-01 00:49:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2018-10-01 00:49:40,510 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 434 [2018-10-01 00:49:40,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:40,510 INFO L480 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2018-10-01 00:49:40,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 218 states. [2018-10-01 00:49:40,510 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2018-10-01 00:49:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2018-10-01 00:49:40,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:40,512 INFO L375 BasicCegarLoop]: trace histogram [217, 216, 1, 1, 1] [2018-10-01 00:49:40,512 INFO L423 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:40,512 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:40,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1031347529, now seen corresponding path program 216 times [2018-10-01 00:49:40,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:40,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:40,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:40,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:40,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:42,667 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:42,667 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:42,676 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:49:43,143 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 217 check-sat command(s) [2018-10-01 00:49:43,143 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:43,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 46872 backedges. 0 proven. 46872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:44,028 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:44,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [218, 218] total 218 [2018-10-01 00:49:44,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 219 states [2018-10-01 00:49:44,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 219 interpolants. [2018-10-01 00:49:44,032 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:44,032 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 219 states. [2018-10-01 00:49:49,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:49,120 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-10-01 00:49:49,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2018-10-01 00:49:49,120 INFO L78 Accepts]: Start accepts. Automaton has 219 states. Word has length 436 [2018-10-01 00:49:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:49,121 INFO L225 Difference]: With dead ends: 441 [2018-10-01 00:49:49,121 INFO L226 Difference]: Without dead ends: 439 [2018-10-01 00:49:49,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:49:49,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-10-01 00:49:49,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-10-01 00:49:49,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-10-01 00:49:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-10-01 00:49:49,126 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 436 [2018-10-01 00:49:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:49,126 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-10-01 00:49:49,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has 219 states. [2018-10-01 00:49:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-10-01 00:49:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-01 00:49:49,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:49,127 INFO L375 BasicCegarLoop]: trace histogram [218, 217, 1, 1, 1] [2018-10-01 00:49:49,128 INFO L423 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:49,128 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:49,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1012522097, now seen corresponding path program 217 times [2018-10-01 00:49:49,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:49,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:49,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:49,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:49:49,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:51,171 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:51,171 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:51,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:51,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:52,148 INFO L134 CoverageAnalysis]: Checked inductivity of 47306 backedges. 0 proven. 47306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:52,168 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:52,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [219, 219] total 219 [2018-10-01 00:49:52,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 220 states [2018-10-01 00:49:52,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 220 interpolants. [2018-10-01 00:49:52,172 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:52,172 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 220 states. [2018-10-01 00:49:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:49:56,049 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2018-10-01 00:49:56,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2018-10-01 00:49:56,049 INFO L78 Accepts]: Start accepts. Automaton has 220 states. Word has length 438 [2018-10-01 00:49:56,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:49:56,050 INFO L225 Difference]: With dead ends: 443 [2018-10-01 00:49:56,050 INFO L226 Difference]: Without dead ends: 441 [2018-10-01 00:49:56,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 00:49:56,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2018-10-01 00:49:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2018-10-01 00:49:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2018-10-01 00:49:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 441 transitions. [2018-10-01 00:49:56,054 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 441 transitions. Word has length 438 [2018-10-01 00:49:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:49:56,055 INFO L480 AbstractCegarLoop]: Abstraction has 441 states and 441 transitions. [2018-10-01 00:49:56,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 220 states. [2018-10-01 00:49:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 441 transitions. [2018-10-01 00:49:56,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2018-10-01 00:49:56,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:49:56,056 INFO L375 BasicCegarLoop]: trace histogram [219, 218, 1, 1, 1] [2018-10-01 00:49:56,056 INFO L423 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:49:56,056 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:49:56,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1923788885, now seen corresponding path program 218 times [2018-10-01 00:49:56,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:49:56,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:49:56,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:56,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:49:56,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:49:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:49:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:58,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:49:58,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:49:58,203 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:49:58,312 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:49:58,312 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:49:58,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:49:59,247 INFO L134 CoverageAnalysis]: Checked inductivity of 47742 backedges. 0 proven. 47742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:49:59,266 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:49:59,266 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [220, 220] total 220 [2018-10-01 00:49:59,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 221 states [2018-10-01 00:49:59,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2018-10-01 00:49:59,269 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:49:59,270 INFO L87 Difference]: Start difference. First operand 441 states and 441 transitions. Second operand 221 states. [2018-10-01 00:50:02,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:02,801 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-10-01 00:50:02,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2018-10-01 00:50:02,802 INFO L78 Accepts]: Start accepts. Automaton has 221 states. Word has length 440 [2018-10-01 00:50:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:02,802 INFO L225 Difference]: With dead ends: 445 [2018-10-01 00:50:02,802 INFO L226 Difference]: Without dead ends: 443 [2018-10-01 00:50:02,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:50:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-10-01 00:50:02,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-10-01 00:50:02,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-10-01 00:50:02,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-10-01 00:50:02,808 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 440 [2018-10-01 00:50:02,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:02,808 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-10-01 00:50:02,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 221 states. [2018-10-01 00:50:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-10-01 00:50:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-01 00:50:02,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:02,810 INFO L375 BasicCegarLoop]: trace histogram [220, 219, 1, 1, 1] [2018-10-01 00:50:02,810 INFO L423 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:02,810 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:02,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1925129115, now seen corresponding path program 219 times [2018-10-01 00:50:02,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:02,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:02,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:02,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:02,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:05,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:05,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:05,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:50:05,594 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 220 check-sat command(s) [2018-10-01 00:50:05,594 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:05,601 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 48180 backedges. 0 proven. 48180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:06,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:06,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [221, 221] total 221 [2018-10-01 00:50:06,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 222 states [2018-10-01 00:50:06,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2018-10-01 00:50:06,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:06,470 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 222 states. [2018-10-01 00:50:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:10,619 INFO L93 Difference]: Finished difference Result 447 states and 447 transitions. [2018-10-01 00:50:10,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2018-10-01 00:50:10,619 INFO L78 Accepts]: Start accepts. Automaton has 222 states. Word has length 442 [2018-10-01 00:50:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:10,620 INFO L225 Difference]: With dead ends: 447 [2018-10-01 00:50:10,620 INFO L226 Difference]: Without dead ends: 445 [2018-10-01 00:50:10,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:50:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2018-10-01 00:50:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2018-10-01 00:50:10,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2018-10-01 00:50:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 445 transitions. [2018-10-01 00:50:10,625 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 445 transitions. Word has length 442 [2018-10-01 00:50:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:10,625 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 445 transitions. [2018-10-01 00:50:10,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 222 states. [2018-10-01 00:50:10,625 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 445 transitions. [2018-10-01 00:50:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2018-10-01 00:50:10,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:10,627 INFO L375 BasicCegarLoop]: trace histogram [221, 220, 1, 1, 1] [2018-10-01 00:50:10,627 INFO L423 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:10,627 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:10,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1081877151, now seen corresponding path program 220 times [2018-10-01 00:50:10,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:10,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:10,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:10,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:10,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:12,713 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:12,713 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:12,720 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:50:12,829 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:50:12,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:12,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 48620 backedges. 0 proven. 48620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:13,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:13,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [222, 222] total 222 [2018-10-01 00:50:13,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 223 states [2018-10-01 00:50:13,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 223 interpolants. [2018-10-01 00:50:13,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:13,920 INFO L87 Difference]: Start difference. First operand 445 states and 445 transitions. Second operand 223 states. [2018-10-01 00:50:18,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:18,062 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-10-01 00:50:18,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2018-10-01 00:50:18,063 INFO L78 Accepts]: Start accepts. Automaton has 223 states. Word has length 444 [2018-10-01 00:50:18,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:18,063 INFO L225 Difference]: With dead ends: 449 [2018-10-01 00:50:18,063 INFO L226 Difference]: Without dead ends: 447 [2018-10-01 00:50:18,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:50:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-01 00:50:18,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-10-01 00:50:18,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-10-01 00:50:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-10-01 00:50:18,068 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 444 [2018-10-01 00:50:18,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:18,068 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-10-01 00:50:18,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 223 states. [2018-10-01 00:50:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-10-01 00:50:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-10-01 00:50:18,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:18,069 INFO L375 BasicCegarLoop]: trace histogram [222, 221, 1, 1, 1] [2018-10-01 00:50:18,070 INFO L423 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:18,070 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:18,070 INFO L82 PathProgramCache]: Analyzing trace with hash 301908569, now seen corresponding path program 221 times [2018-10-01 00:50:18,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:18,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:18,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:18,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:18,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:20,410 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:20,410 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:20,416 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:50:20,844 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 222 check-sat command(s) [2018-10-01 00:50:20,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:20,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 49062 backedges. 0 proven. 49062 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:21,785 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:21,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [223, 223] total 223 [2018-10-01 00:50:21,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 224 states [2018-10-01 00:50:21,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 224 interpolants. [2018-10-01 00:50:21,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:21,788 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 224 states. [2018-10-01 00:50:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:26,409 INFO L93 Difference]: Finished difference Result 451 states and 451 transitions. [2018-10-01 00:50:26,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2018-10-01 00:50:26,410 INFO L78 Accepts]: Start accepts. Automaton has 224 states. Word has length 446 [2018-10-01 00:50:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:26,410 INFO L225 Difference]: With dead ends: 451 [2018-10-01 00:50:26,410 INFO L226 Difference]: Without dead ends: 449 [2018-10-01 00:50:26,411 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 00:50:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2018-10-01 00:50:26,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2018-10-01 00:50:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2018-10-01 00:50:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 449 transitions. [2018-10-01 00:50:26,417 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 449 transitions. Word has length 446 [2018-10-01 00:50:26,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:26,417 INFO L480 AbstractCegarLoop]: Abstraction has 449 states and 449 transitions. [2018-10-01 00:50:26,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 224 states. [2018-10-01 00:50:26,417 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 449 transitions. [2018-10-01 00:50:26,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2018-10-01 00:50:26,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:26,419 INFO L375 BasicCegarLoop]: trace histogram [223, 222, 1, 1, 1] [2018-10-01 00:50:26,420 INFO L423 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:26,420 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:26,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1923589229, now seen corresponding path program 222 times [2018-10-01 00:50:26,420 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:26,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:26,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:26,421 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:26,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:28,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:28,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:28,714 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:50:29,169 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 223 check-sat command(s) [2018-10-01 00:50:29,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:29,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 49506 backedges. 0 proven. 49506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:30,022 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:30,022 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [224, 224] total 224 [2018-10-01 00:50:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 225 states [2018-10-01 00:50:30,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2018-10-01 00:50:30,025 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:30,025 INFO L87 Difference]: Start difference. First operand 449 states and 449 transitions. Second operand 225 states. [2018-10-01 00:50:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:34,721 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-01 00:50:34,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 225 states. [2018-10-01 00:50:34,722 INFO L78 Accepts]: Start accepts. Automaton has 225 states. Word has length 448 [2018-10-01 00:50:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:34,722 INFO L225 Difference]: With dead ends: 453 [2018-10-01 00:50:34,722 INFO L226 Difference]: Without dead ends: 451 [2018-10-01 00:50:34,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:50:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-10-01 00:50:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-10-01 00:50:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-10-01 00:50:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-10-01 00:50:34,726 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 448 [2018-10-01 00:50:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:34,727 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-10-01 00:50:34,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 225 states. [2018-10-01 00:50:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-10-01 00:50:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-10-01 00:50:34,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:34,728 INFO L375 BasicCegarLoop]: trace histogram [224, 223, 1, 1, 1] [2018-10-01 00:50:34,728 INFO L423 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:34,729 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:34,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1733259699, now seen corresponding path program 223 times [2018-10-01 00:50:34,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:34,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:34,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:34,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:36,897 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:36,897 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:36,898 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:36,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:37,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:37,917 INFO L134 CoverageAnalysis]: Checked inductivity of 49952 backedges. 0 proven. 49952 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:37,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:37,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [225, 225] total 225 [2018-10-01 00:50:37,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 226 states [2018-10-01 00:50:37,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 226 interpolants. [2018-10-01 00:50:37,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:37,941 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 226 states. [2018-10-01 00:50:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:42,971 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2018-10-01 00:50:42,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2018-10-01 00:50:42,971 INFO L78 Accepts]: Start accepts. Automaton has 226 states. Word has length 450 [2018-10-01 00:50:42,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:42,972 INFO L225 Difference]: With dead ends: 455 [2018-10-01 00:50:42,972 INFO L226 Difference]: Without dead ends: 453 [2018-10-01 00:50:42,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 00:50:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2018-10-01 00:50:42,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 453. [2018-10-01 00:50:42,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2018-10-01 00:50:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 453 transitions. [2018-10-01 00:50:42,977 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 453 transitions. Word has length 450 [2018-10-01 00:50:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:42,977 INFO L480 AbstractCegarLoop]: Abstraction has 453 states and 453 transitions. [2018-10-01 00:50:42,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 226 states. [2018-10-01 00:50:42,977 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 453 transitions. [2018-10-01 00:50:42,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-10-01 00:50:42,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:42,979 INFO L375 BasicCegarLoop]: trace histogram [225, 224, 1, 1, 1] [2018-10-01 00:50:42,979 INFO L423 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:42,979 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash 784792199, now seen corresponding path program 224 times [2018-10-01 00:50:42,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:42,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:42,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:42,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:50:42,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 50400 backedges. 0 proven. 50400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:45,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:45,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:45,327 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:50:45,438 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:50:45,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:45,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 50400 backedges. 0 proven. 50400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:46,376 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:46,376 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [226, 226] total 226 [2018-10-01 00:50:46,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 227 states [2018-10-01 00:50:46,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2018-10-01 00:50:46,379 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:46,379 INFO L87 Difference]: Start difference. First operand 453 states and 453 transitions. Second operand 227 states. [2018-10-01 00:50:50,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:50,318 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-10-01 00:50:50,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2018-10-01 00:50:50,318 INFO L78 Accepts]: Start accepts. Automaton has 227 states. Word has length 452 [2018-10-01 00:50:50,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:50,319 INFO L225 Difference]: With dead ends: 457 [2018-10-01 00:50:50,319 INFO L226 Difference]: Without dead ends: 455 [2018-10-01 00:50:50,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:50:50,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-10-01 00:50:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-10-01 00:50:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-01 00:50:50,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-01 00:50:50,324 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 452 [2018-10-01 00:50:50,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:50,324 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-01 00:50:50,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 227 states. [2018-10-01 00:50:50,324 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-01 00:50:50,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-01 00:50:50,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:50,326 INFO L375 BasicCegarLoop]: trace histogram [226, 225, 1, 1, 1] [2018-10-01 00:50:50,326 INFO L423 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:50,326 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:50,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1728888767, now seen corresponding path program 225 times [2018-10-01 00:50:50,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:50,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:50,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:50,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:50,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 50850 backedges. 0 proven. 50850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:52,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:52,621 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:52,628 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:50:53,148 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 226 check-sat command(s) [2018-10-01 00:50:53,148 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:50:53,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:50:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 50850 backedges. 0 proven. 50850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:54,116 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:50:54,116 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [227, 227] total 227 [2018-10-01 00:50:54,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 228 states [2018-10-01 00:50:54,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 228 interpolants. [2018-10-01 00:50:54,119 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:50:54,120 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 228 states. [2018-10-01 00:50:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:50:57,481 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2018-10-01 00:50:57,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 228 states. [2018-10-01 00:50:57,482 INFO L78 Accepts]: Start accepts. Automaton has 228 states. Word has length 454 [2018-10-01 00:50:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:50:57,482 INFO L225 Difference]: With dead ends: 459 [2018-10-01 00:50:57,482 INFO L226 Difference]: Without dead ends: 457 [2018-10-01 00:50:57,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:50:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2018-10-01 00:50:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 457. [2018-10-01 00:50:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2018-10-01 00:50:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 457 transitions. [2018-10-01 00:50:57,489 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 457 transitions. Word has length 454 [2018-10-01 00:50:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:50:57,490 INFO L480 AbstractCegarLoop]: Abstraction has 457 states and 457 transitions. [2018-10-01 00:50:57,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 228 states. [2018-10-01 00:50:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 457 transitions. [2018-10-01 00:50:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-10-01 00:50:57,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:50:57,492 INFO L375 BasicCegarLoop]: trace histogram [227, 226, 1, 1, 1] [2018-10-01 00:50:57,492 INFO L423 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:50:57,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:50:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash 690290555, now seen corresponding path program 226 times [2018-10-01 00:50:57,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:50:57,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:50:57,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:57,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:50:57,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:50:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:50:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 51302 backedges. 0 proven. 51302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:50:59,964 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:50:59,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:50:59,971 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:51:00,079 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:51:00,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:00,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 51302 backedges. 0 proven. 51302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:01,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:01,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [228, 228] total 228 [2018-10-01 00:51:01,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 229 states [2018-10-01 00:51:01,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 229 interpolants. [2018-10-01 00:51:01,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:01,063 INFO L87 Difference]: Start difference. First operand 457 states and 457 transitions. Second operand 229 states. [2018-10-01 00:51:04,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:04,280 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-10-01 00:51:04,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2018-10-01 00:51:04,281 INFO L78 Accepts]: Start accepts. Automaton has 229 states. Word has length 456 [2018-10-01 00:51:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:04,282 INFO L225 Difference]: With dead ends: 461 [2018-10-01 00:51:04,282 INFO L226 Difference]: Without dead ends: 459 [2018-10-01 00:51:04,282 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 227 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:51:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-10-01 00:51:04,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-10-01 00:51:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-10-01 00:51:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-10-01 00:51:04,288 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 456 [2018-10-01 00:51:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:04,288 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-10-01 00:51:04,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 229 states. [2018-10-01 00:51:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-10-01 00:51:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-10-01 00:51:04,290 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:04,290 INFO L375 BasicCegarLoop]: trace histogram [228, 227, 1, 1, 1] [2018-10-01 00:51:04,290 INFO L423 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:04,290 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:04,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1944311861, now seen corresponding path program 227 times [2018-10-01 00:51:04,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:04,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:04,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:04,291 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:04,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 51756 backedges. 0 proven. 51756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:06,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:06,683 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:06,692 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:51:07,119 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 228 check-sat command(s) [2018-10-01 00:51:07,119 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:07,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 51756 backedges. 0 proven. 51756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:08,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:08,127 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [229, 229] total 229 [2018-10-01 00:51:08,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 230 states [2018-10-01 00:51:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 230 interpolants. [2018-10-01 00:51:08,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:08,131 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 230 states. [2018-10-01 00:51:11,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:11,858 INFO L93 Difference]: Finished difference Result 463 states and 463 transitions. [2018-10-01 00:51:11,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2018-10-01 00:51:11,858 INFO L78 Accepts]: Start accepts. Automaton has 230 states. Word has length 458 [2018-10-01 00:51:11,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:11,859 INFO L225 Difference]: With dead ends: 463 [2018-10-01 00:51:11,859 INFO L226 Difference]: Without dead ends: 461 [2018-10-01 00:51:11,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:51:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2018-10-01 00:51:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2018-10-01 00:51:11,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2018-10-01 00:51:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 461 transitions. [2018-10-01 00:51:11,864 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 461 transitions. Word has length 458 [2018-10-01 00:51:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:11,864 INFO L480 AbstractCegarLoop]: Abstraction has 461 states and 461 transitions. [2018-10-01 00:51:11,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 230 states. [2018-10-01 00:51:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 461 transitions. [2018-10-01 00:51:11,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2018-10-01 00:51:11,866 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:11,866 INFO L375 BasicCegarLoop]: trace histogram [229, 228, 1, 1, 1] [2018-10-01 00:51:11,866 INFO L423 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:11,866 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash 172976751, now seen corresponding path program 228 times [2018-10-01 00:51:11,866 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:11,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:11,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:11,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:11,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:14,131 INFO L134 CoverageAnalysis]: Checked inductivity of 52212 backedges. 0 proven. 52212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:14,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:14,131 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:14,140 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:51:14,567 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 229 check-sat command(s) [2018-10-01 00:51:14,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:14,578 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 52212 backedges. 0 proven. 52212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:15,703 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:15,703 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [230, 230] total 230 [2018-10-01 00:51:15,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2018-10-01 00:51:15,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2018-10-01 00:51:15,707 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:15,707 INFO L87 Difference]: Start difference. First operand 461 states and 461 transitions. Second operand 231 states. [2018-10-01 00:51:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:20,245 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-10-01 00:51:20,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2018-10-01 00:51:20,246 INFO L78 Accepts]: Start accepts. Automaton has 231 states. Word has length 460 [2018-10-01 00:51:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:20,246 INFO L225 Difference]: With dead ends: 465 [2018-10-01 00:51:20,246 INFO L226 Difference]: Without dead ends: 463 [2018-10-01 00:51:20,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:51:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-10-01 00:51:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-10-01 00:51:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-10-01 00:51:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-10-01 00:51:20,252 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 460 [2018-10-01 00:51:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:20,252 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-10-01 00:51:20,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 231 states. [2018-10-01 00:51:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-10-01 00:51:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-10-01 00:51:20,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:20,254 INFO L375 BasicCegarLoop]: trace histogram [230, 229, 1, 1, 1] [2018-10-01 00:51:20,254 INFO L423 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:20,254 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:20,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1273014743, now seen corresponding path program 229 times [2018-10-01 00:51:20,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:20,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:20,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:20,255 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:20,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 52670 backedges. 0 proven. 52670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:22,654 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:22,654 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:22,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:51:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:22,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52670 backedges. 0 proven. 52670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:23,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:23,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [231, 231] total 231 [2018-10-01 00:51:23,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 232 states [2018-10-01 00:51:23,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 232 interpolants. [2018-10-01 00:51:23,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:23,740 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 232 states. [2018-10-01 00:51:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:29,775 INFO L93 Difference]: Finished difference Result 467 states and 467 transitions. [2018-10-01 00:51:29,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2018-10-01 00:51:29,775 INFO L78 Accepts]: Start accepts. Automaton has 232 states. Word has length 462 [2018-10-01 00:51:29,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:29,776 INFO L225 Difference]: With dead ends: 467 [2018-10-01 00:51:29,776 INFO L226 Difference]: Without dead ends: 465 [2018-10-01 00:51:29,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:51:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2018-10-01 00:51:29,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2018-10-01 00:51:29,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2018-10-01 00:51:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 465 transitions. [2018-10-01 00:51:29,781 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 465 transitions. Word has length 462 [2018-10-01 00:51:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:29,781 INFO L480 AbstractCegarLoop]: Abstraction has 465 states and 465 transitions. [2018-10-01 00:51:29,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 232 states. [2018-10-01 00:51:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 465 transitions. [2018-10-01 00:51:29,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2018-10-01 00:51:29,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:29,783 INFO L375 BasicCegarLoop]: trace histogram [231, 230, 1, 1, 1] [2018-10-01 00:51:29,783 INFO L423 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:29,783 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:29,783 INFO L82 PathProgramCache]: Analyzing trace with hash 698563427, now seen corresponding path program 230 times [2018-10-01 00:51:29,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:29,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:29,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:29,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:51:29,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 53130 backedges. 0 proven. 53130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:32,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:32,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:32,250 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:51:32,368 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:51:32,368 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:32,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 53130 backedges. 0 proven. 53130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:33,378 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:33,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [232, 232] total 232 [2018-10-01 00:51:33,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 233 states [2018-10-01 00:51:33,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 233 interpolants. [2018-10-01 00:51:33,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:33,382 INFO L87 Difference]: Start difference. First operand 465 states and 465 transitions. Second operand 233 states. [2018-10-01 00:51:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:39,142 INFO L93 Difference]: Finished difference Result 469 states and 469 transitions. [2018-10-01 00:51:39,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2018-10-01 00:51:39,142 INFO L78 Accepts]: Start accepts. Automaton has 233 states. Word has length 464 [2018-10-01 00:51:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:39,143 INFO L225 Difference]: With dead ends: 469 [2018-10-01 00:51:39,144 INFO L226 Difference]: Without dead ends: 467 [2018-10-01 00:51:39,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:51:39,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-10-01 00:51:39,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-10-01 00:51:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-10-01 00:51:39,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 467 transitions. [2018-10-01 00:51:39,149 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 467 transitions. Word has length 464 [2018-10-01 00:51:39,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:39,149 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 467 transitions. [2018-10-01 00:51:39,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 233 states. [2018-10-01 00:51:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 467 transitions. [2018-10-01 00:51:39,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-01 00:51:39,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:39,151 INFO L375 BasicCegarLoop]: trace histogram [232, 231, 1, 1, 1] [2018-10-01 00:51:39,152 INFO L423 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:39,152 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:39,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1304607261, now seen corresponding path program 231 times [2018-10-01 00:51:39,152 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:39,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:39,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:39,153 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:39,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 53592 backedges. 0 proven. 53592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:41,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:41,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:41,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:51:42,266 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 232 check-sat command(s) [2018-10-01 00:51:42,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:42,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 53592 backedges. 0 proven. 53592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:43,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:43,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [233, 233] total 233 [2018-10-01 00:51:43,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 234 states [2018-10-01 00:51:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2018-10-01 00:51:43,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:43,297 INFO L87 Difference]: Start difference. First operand 467 states and 467 transitions. Second operand 234 states. [2018-10-01 00:51:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:48,177 INFO L93 Difference]: Finished difference Result 471 states and 471 transitions. [2018-10-01 00:51:48,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2018-10-01 00:51:48,177 INFO L78 Accepts]: Start accepts. Automaton has 234 states. Word has length 466 [2018-10-01 00:51:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:48,178 INFO L225 Difference]: With dead ends: 471 [2018-10-01 00:51:48,178 INFO L226 Difference]: Without dead ends: 469 [2018-10-01 00:51:48,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:51:48,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2018-10-01 00:51:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2018-10-01 00:51:48,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-10-01 00:51:48,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 469 transitions. [2018-10-01 00:51:48,183 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 469 transitions. Word has length 466 [2018-10-01 00:51:48,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:48,183 INFO L480 AbstractCegarLoop]: Abstraction has 469 states and 469 transitions. [2018-10-01 00:51:48,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 234 states. [2018-10-01 00:51:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 469 transitions. [2018-10-01 00:51:48,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-10-01 00:51:48,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:48,185 INFO L375 BasicCegarLoop]: trace histogram [233, 232, 1, 1, 1] [2018-10-01 00:51:48,185 INFO L423 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:48,185 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:48,185 INFO L82 PathProgramCache]: Analyzing trace with hash -402820521, now seen corresponding path program 232 times [2018-10-01 00:51:48,185 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:48,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:48,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:48,186 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:48,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:51:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 54056 backedges. 0 proven. 54056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:50,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:51:50,597 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:51:50,604 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:51:50,720 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:51:50,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:51:50,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:51:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 54056 backedges. 0 proven. 54056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:51:51,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:51:51,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [234, 234] total 234 [2018-10-01 00:51:51,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 235 states [2018-10-01 00:51:51,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 235 interpolants. [2018-10-01 00:51:51,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:51:51,924 INFO L87 Difference]: Start difference. First operand 469 states and 469 transitions. Second operand 235 states. [2018-10-01 00:51:58,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:51:58,637 INFO L93 Difference]: Finished difference Result 473 states and 473 transitions. [2018-10-01 00:51:58,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2018-10-01 00:51:58,637 INFO L78 Accepts]: Start accepts. Automaton has 235 states. Word has length 468 [2018-10-01 00:51:58,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:51:58,638 INFO L225 Difference]: With dead ends: 473 [2018-10-01 00:51:58,638 INFO L226 Difference]: Without dead ends: 471 [2018-10-01 00:51:58,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 701 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:51:58,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-10-01 00:51:58,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-10-01 00:51:58,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-10-01 00:51:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2018-10-01 00:51:58,642 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 468 [2018-10-01 00:51:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:51:58,642 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2018-10-01 00:51:58,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 235 states. [2018-10-01 00:51:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2018-10-01 00:51:58,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-01 00:51:58,644 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:51:58,644 INFO L375 BasicCegarLoop]: trace histogram [234, 233, 1, 1, 1] [2018-10-01 00:51:58,644 INFO L423 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:51:58,644 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:51:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash -563411951, now seen corresponding path program 233 times [2018-10-01 00:51:58,644 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:51:58,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:51:58,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:58,645 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:51:58,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:51:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 54522 backedges. 0 proven. 54522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:01,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:01,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:01,086 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:52:01,568 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 234 check-sat command(s) [2018-10-01 00:52:01,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:01,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 54522 backedges. 0 proven. 54522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:02,563 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:02,563 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [235, 235] total 235 [2018-10-01 00:52:02,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 236 states [2018-10-01 00:52:02,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 236 interpolants. [2018-10-01 00:52:02,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:02,568 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 236 states. [2018-10-01 00:52:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:06,128 INFO L93 Difference]: Finished difference Result 475 states and 475 transitions. [2018-10-01 00:52:06,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 236 states. [2018-10-01 00:52:06,128 INFO L78 Accepts]: Start accepts. Automaton has 236 states. Word has length 470 [2018-10-01 00:52:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:06,129 INFO L225 Difference]: With dead ends: 475 [2018-10-01 00:52:06,129 INFO L226 Difference]: Without dead ends: 473 [2018-10-01 00:52:06,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:52:06,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2018-10-01 00:52:06,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2018-10-01 00:52:06,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-10-01 00:52:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2018-10-01 00:52:06,133 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 470 [2018-10-01 00:52:06,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:06,134 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2018-10-01 00:52:06,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 236 states. [2018-10-01 00:52:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2018-10-01 00:52:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-10-01 00:52:06,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:06,135 INFO L375 BasicCegarLoop]: trace histogram [235, 234, 1, 1, 1] [2018-10-01 00:52:06,136 INFO L423 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:06,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:06,136 INFO L82 PathProgramCache]: Analyzing trace with hash -272953525, now seen corresponding path program 234 times [2018-10-01 00:52:06,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:06,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:06,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:06,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:06,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:06,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 54990 backedges. 0 proven. 54990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:08,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:08,609 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:08,616 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 00:52:09,079 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 235 check-sat command(s) [2018-10-01 00:52:09,080 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:09,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 54990 backedges. 0 proven. 54990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:10,026 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:10,026 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [236, 236] total 236 [2018-10-01 00:52:10,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 237 states [2018-10-01 00:52:10,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 237 interpolants. [2018-10-01 00:52:10,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:10,030 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 237 states. [2018-10-01 00:52:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:16,523 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2018-10-01 00:52:16,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2018-10-01 00:52:16,524 INFO L78 Accepts]: Start accepts. Automaton has 237 states. Word has length 472 [2018-10-01 00:52:16,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:16,525 INFO L225 Difference]: With dead ends: 477 [2018-10-01 00:52:16,525 INFO L226 Difference]: Without dead ends: 475 [2018-10-01 00:52:16,525 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 00:52:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-10-01 00:52:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-10-01 00:52:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-10-01 00:52:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2018-10-01 00:52:16,530 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 472 [2018-10-01 00:52:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:16,531 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2018-10-01 00:52:16,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 237 states. [2018-10-01 00:52:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2018-10-01 00:52:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-01 00:52:16,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:16,533 INFO L375 BasicCegarLoop]: trace histogram [236, 235, 1, 1, 1] [2018-10-01 00:52:16,533 INFO L423 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:16,533 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:16,533 INFO L82 PathProgramCache]: Analyzing trace with hash -315280379, now seen corresponding path program 235 times [2018-10-01 00:52:16,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:16,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:16,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:16,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:16,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 55460 backedges. 0 proven. 55460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:18,973 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:18,973 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:18,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:52:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:19,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 55460 backedges. 0 proven. 55460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:20,191 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:20,191 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [237, 237] total 237 [2018-10-01 00:52:20,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 238 states [2018-10-01 00:52:20,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 238 interpolants. [2018-10-01 00:52:20,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:20,195 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand 238 states. [2018-10-01 00:52:25,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:25,611 INFO L93 Difference]: Finished difference Result 479 states and 479 transitions. [2018-10-01 00:52:25,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2018-10-01 00:52:25,611 INFO L78 Accepts]: Start accepts. Automaton has 238 states. Word has length 474 [2018-10-01 00:52:25,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:25,612 INFO L225 Difference]: With dead ends: 479 [2018-10-01 00:52:25,612 INFO L226 Difference]: Without dead ends: 477 [2018-10-01 00:52:25,613 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:52:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2018-10-01 00:52:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2018-10-01 00:52:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2018-10-01 00:52:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 477 transitions. [2018-10-01 00:52:25,617 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 477 transitions. Word has length 474 [2018-10-01 00:52:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:25,617 INFO L480 AbstractCegarLoop]: Abstraction has 477 states and 477 transitions. [2018-10-01 00:52:25,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 238 states. [2018-10-01 00:52:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 477 transitions. [2018-10-01 00:52:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-10-01 00:52:25,619 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:25,619 INFO L375 BasicCegarLoop]: trace histogram [237, 236, 1, 1, 1] [2018-10-01 00:52:25,620 INFO L423 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:25,620 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:25,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1958285887, now seen corresponding path program 236 times [2018-10-01 00:52:25,620 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:25,620 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:25,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:25,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 00:52:25,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 55932 backedges. 0 proven. 55932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:28,285 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:28,286 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:28,293 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 00:52:28,403 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 00:52:28,403 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:28,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 55932 backedges. 0 proven. 55932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:29,358 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:29,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [238, 238] total 238 [2018-10-01 00:52:29,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 239 states [2018-10-01 00:52:29,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 239 interpolants. [2018-10-01 00:52:29,364 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:29,364 INFO L87 Difference]: Start difference. First operand 477 states and 477 transitions. Second operand 239 states. [2018-10-01 00:52:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:33,148 INFO L93 Difference]: Finished difference Result 481 states and 481 transitions. [2018-10-01 00:52:33,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2018-10-01 00:52:33,148 INFO L78 Accepts]: Start accepts. Automaton has 239 states. Word has length 476 [2018-10-01 00:52:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:33,149 INFO L225 Difference]: With dead ends: 481 [2018-10-01 00:52:33,149 INFO L226 Difference]: Without dead ends: 479 [2018-10-01 00:52:33,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:52:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-10-01 00:52:33,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-10-01 00:52:33,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-10-01 00:52:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2018-10-01 00:52:33,154 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 476 [2018-10-01 00:52:33,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:33,154 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2018-10-01 00:52:33,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 239 states. [2018-10-01 00:52:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2018-10-01 00:52:33,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-01 00:52:33,156 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:33,156 INFO L375 BasicCegarLoop]: trace histogram [238, 237, 1, 1, 1] [2018-10-01 00:52:33,156 INFO L423 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:33,156 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:33,156 INFO L82 PathProgramCache]: Analyzing trace with hash 717113849, now seen corresponding path program 237 times [2018-10-01 00:52:33,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:33,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:33,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:33,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:33,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 56406 backedges. 0 proven. 56406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:35,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:35,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:35,599 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 00:52:36,195 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 238 check-sat command(s) [2018-10-01 00:52:36,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:36,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 56406 backedges. 0 proven. 56406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:37,458 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:37,458 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [239, 239] total 239 [2018-10-01 00:52:37,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 240 states [2018-10-01 00:52:37,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 240 interpolants. [2018-10-01 00:52:37,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:37,462 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand 240 states. [2018-10-01 00:52:44,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:44,557 INFO L93 Difference]: Finished difference Result 483 states and 483 transitions. [2018-10-01 00:52:44,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 240 states. [2018-10-01 00:52:44,557 INFO L78 Accepts]: Start accepts. Automaton has 240 states. Word has length 478 [2018-10-01 00:52:44,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:44,558 INFO L225 Difference]: With dead ends: 483 [2018-10-01 00:52:44,558 INFO L226 Difference]: Without dead ends: 481 [2018-10-01 00:52:44,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 716 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 00:52:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2018-10-01 00:52:44,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2018-10-01 00:52:44,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-01 00:52:44,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 481 transitions. [2018-10-01 00:52:44,563 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 481 transitions. Word has length 478 [2018-10-01 00:52:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:44,563 INFO L480 AbstractCegarLoop]: Abstraction has 481 states and 481 transitions. [2018-10-01 00:52:44,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 240 states. [2018-10-01 00:52:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 481 transitions. [2018-10-01 00:52:44,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-10-01 00:52:44,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:44,565 INFO L375 BasicCegarLoop]: trace histogram [239, 238, 1, 1, 1] [2018-10-01 00:52:44,565 INFO L423 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:44,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:44,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1951693619, now seen corresponding path program 238 times [2018-10-01 00:52:44,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:44,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:44,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:44,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:44,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 56882 backedges. 0 proven. 56882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:47,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:47,030 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:47,036 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 00:52:47,154 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 00:52:47,154 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:47,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 56882 backedges. 0 proven. 56882 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:48,251 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:48,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [240, 240] total 240 [2018-10-01 00:52:48,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 241 states [2018-10-01 00:52:48,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 241 interpolants. [2018-10-01 00:52:48,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:48,257 INFO L87 Difference]: Start difference. First operand 481 states and 481 transitions. Second operand 241 states. [2018-10-01 00:52:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:52:54,580 INFO L93 Difference]: Finished difference Result 485 states and 485 transitions. [2018-10-01 00:52:54,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2018-10-01 00:52:54,580 INFO L78 Accepts]: Start accepts. Automaton has 241 states. Word has length 480 [2018-10-01 00:52:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:52:54,581 INFO L225 Difference]: With dead ends: 485 [2018-10-01 00:52:54,581 INFO L226 Difference]: Without dead ends: 483 [2018-10-01 00:52:54,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 00:52:54,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-10-01 00:52:54,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-10-01 00:52:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-10-01 00:52:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 483 transitions. [2018-10-01 00:52:54,586 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 483 transitions. Word has length 480 [2018-10-01 00:52:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:52:54,586 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 483 transitions. [2018-10-01 00:52:54,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 241 states. [2018-10-01 00:52:54,586 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 483 transitions. [2018-10-01 00:52:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-10-01 00:52:54,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:52:54,588 INFO L375 BasicCegarLoop]: trace histogram [240, 239, 1, 1, 1] [2018-10-01 00:52:54,588 INFO L423 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:52:54,588 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:52:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1323088403, now seen corresponding path program 239 times [2018-10-01 00:52:54,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:52:54,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:52:54,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:54,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:52:54,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:52:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 00:52:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 57360 backedges. 0 proven. 57360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:57,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 00:52:57,086 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 00:52:57,093 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 00:52:57,575 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 240 check-sat command(s) [2018-10-01 00:52:57,575 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 00:52:57,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 00:52:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 57360 backedges. 0 proven. 57360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 00:52:58,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 00:52:58,660 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [241, 241] total 241 [2018-10-01 00:52:58,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 242 states [2018-10-01 00:52:58,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 242 interpolants. [2018-10-01 00:52:58,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 00:52:58,663 INFO L87 Difference]: Start difference. First operand 483 states and 483 transitions. Second operand 242 states. [2018-10-01 00:53:05,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 00:53:05,506 INFO L93 Difference]: Finished difference Result 487 states and 487 transitions. [2018-10-01 00:53:05,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2018-10-01 00:53:05,506 INFO L78 Accepts]: Start accepts. Automaton has 242 states. Word has length 482 [2018-10-01 00:53:05,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 00:53:05,507 INFO L225 Difference]: With dead ends: 487 [2018-10-01 00:53:05,507 INFO L226 Difference]: Without dead ends: 485 [2018-10-01 00:53:05,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 00:53:05,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2018-10-01 00:53:05,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 485. [2018-10-01 00:53:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-10-01 00:53:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 485 transitions. [2018-10-01 00:53:05,512 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 485 transitions. Word has length 482 [2018-10-01 00:53:05,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 00:53:05,512 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 485 transitions. [2018-10-01 00:53:05,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 242 states. [2018-10-01 00:53:05,512 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 485 transitions. [2018-10-01 00:53:05,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-10-01 00:53:05,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 00:53:05,514 INFO L375 BasicCegarLoop]: trace histogram [241, 240, 1, 1, 1] [2018-10-01 00:53:05,514 INFO L423 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 00:53:05,514 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 00:53:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash -177583577, now seen corresponding path program 240 times [2018-10-01 00:53:05,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 00:53:05,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 00:53:05,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:05,515 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 00:53:05,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 00:53:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-01 00:53:07,315 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 00:53:07,320 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 00:53:07,320 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 12:53:07 BoogieIcfgContainer [2018-10-01 00:53:07,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 00:53:07,321 INFO L168 Benchmark]: Toolchain (without parser) took 801578.56 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 562.8 MB. Max. memory is 7.1 GB. [2018-10-01 00:53:07,323 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. [2018-10-01 00:53:07,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.22 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. [2018-10-01 00:53:07,324 INFO L168 Benchmark]: Boogie Preprocessor took 19.33 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. [2018-10-01 00:53:07,324 INFO L168 Benchmark]: RCFGBuilder took 307.08 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. [2018-10-01 00:53:07,325 INFO L168 Benchmark]: TraceAbstraction took 801206.62 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 541.6 MB. Max. memory is 7.1 GB. [2018-10-01 00:53:07,327 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 39.22 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 19.33 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 307.08 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 801206.62 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 541.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 31). Cancelled while BasicCegarLoop was analyzing trace of length 485 with TraceHistMax 241, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 483 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 801.1s OverallTime, 241 OverallIterations, 241 TraceHistogramMax, 386.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 960 SDtfs, 0 SDslu, 37702 SDs, 0 SdLazy, 37942 SolverSat, 725 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87237 GetRequests, 58317 SyntacticMatches, 0 SemanticMatches, 28920 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 302.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=485occurred in iteration=240, 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: 0.9s AutomataMinimizationTime, 240 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.7s SsaConstructionTime, 53.1s SatisfiabilityAnalysisTime, 335.6s InterpolantComputationTime, 116636 NumberOfCodeBlocks, 116636 NumberOfCodeBlocksAsserted, 14919 NumberOfCheckSat, 116157 ConstructedInterpolants, 0 QuantifiedInterpolants, 111747339 SizeOfPredicates, 239 NumberOfNonLiveVariables, 117827 ConjunctsInSsa, 29158 ConjunctsInUnsatCore, 479 InterpolantComputations, 1 PerfectInterpolantSequences, 0/9215840 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_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-01_00-53-07-335.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-01_00-53-07-335.csv Completed graceful shutdown