java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:41:14,468 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:41:14,471 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:41:14,485 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:41:14,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:41:14,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:41:14,490 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:41:14,492 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:41:14,494 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:41:14,495 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:41:14,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 09:41:14,520 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 [2018-10-04 09:41:14,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:41:14,547 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:41:14,548 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:41:14,548 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:41:14,548 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:41:14,548 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:41:14,549 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:41:14,549 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:41:14,549 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:41:14,549 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:41:14,549 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:41:14,550 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:41:14,550 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:41:14,550 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:41:14,550 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:41:14,550 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:41:14,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:41:14,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:41:14,551 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:41:14,551 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:41:14,551 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:41:14,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:41:14,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:41:14,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:41:14,552 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:41:14,552 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:41:14,553 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:41:14,553 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:41:14,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:41:14,553 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:41:14,553 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 09:41:14,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:41:14,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:41:14,625 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:41:14,627 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:41:14,627 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:41:14,628 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl [2018-10-04 09:41:14,628 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_nondet.i_3.bpl' [2018-10-04 09:41:14,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:41:14,687 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:41:14,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:41:14,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:41:14,688 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:41:14,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:41:14,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:41:14,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:41:14,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:41:14,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/1) ... [2018-10-04 09:41:14,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:41:14,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:41:14,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:41:14,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:41:14,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (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 [2018-10-04 09:41:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 09:41:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 09:41:15,051 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 09:41:15,051 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:41:15 BoogieIcfgContainer [2018-10-04 09:41:15,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:41:15,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:41:15,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:41:15,057 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:41:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:41:14" (1/2) ... [2018-10-04 09:41:15,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e50da and model type count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:41:15, skipping insertion in model container [2018-10-04 09:41:15,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:41:15" (2/2) ... [2018-10-04 09:41:15,061 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_nondet.i_3.bpl [2018-10-04 09:41:15,073 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:41:15,085 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:41:15,146 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:41:15,147 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:41:15,148 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:41:15,150 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:41:15,150 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:41:15,150 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:41:15,150 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:41:15,151 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:41:15,151 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:41:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 09:41:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 09:41:15,185 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:15,189 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 09:41:15,190 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:15,202 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:15,202 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 09:41:15,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:15,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:15,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:15,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:15,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:15,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:41:15,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:41:15,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:41:15,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:41:15,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:15,475 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 09:41:15,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:15,540 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-04 09:41:15,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:41:15,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 09:41:15,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:15,562 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:41:15,563 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 09:41:15,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 09:41:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 09:41:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 09:41:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 09:41:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 09:41:15,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-10-04 09:41:15,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:15,612 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 09:41:15,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:41:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 09:41:15,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:41:15,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:15,614 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-10-04 09:41:15,614 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:15,616 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:15,616 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-10-04 09:41:15,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:15,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:15,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:15,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:15,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:15,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:15,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:15,824 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 [2018-10-04 09:41:15,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:15,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:15,970 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:15,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:41:15,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:41:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:41:15,972 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:15,972 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-10-04 09:41:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:15,993 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 09:41:15,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:41:15,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-10-04 09:41:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:15,995 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:41:15,995 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 09:41:15,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 2 [2018-10-04 09:41:15,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 09:41:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 09:41:15,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 09:41:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 09:41:15,999 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-10-04 09:41:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:15,999 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 09:41:16,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:41:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 09:41:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 09:41:16,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:16,000 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-10-04 09:41:16,001 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:16,001 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:16,001 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-10-04 09:41:16,001 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:16,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:16,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:16,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:16,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:16,134 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 [2018-10-04 09:41:16,146 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:16,173 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:16,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:16,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:16,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:16,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:41:16,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:41:16,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:41:16,273 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:16,273 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-10-04 09:41:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:16,322 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:41:16,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:41:16,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-10-04 09:41:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:16,324 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:41:16,324 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:41:16,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3 [2018-10-04 09:41:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:41:16,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:41:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:41:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:41:16,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-10-04 09:41:16,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:16,329 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:41:16,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:41:16,330 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:41:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:41:16,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:16,330 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-10-04 09:41:16,331 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:16,331 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:16,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-10-04 09:41:16,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:16,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:16,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:16,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:16,502 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:16,502 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:16,510 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:16,569 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-04 09:41:16,569 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:16,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:16,844 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:16,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:41:16,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:41:16,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:41:16,846 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:16,846 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-10-04 09:41:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:16,880 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 09:41:16,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:41:16,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 09:41:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:16,882 INFO L225 Difference]: With dead ends: 15 [2018-10-04 09:41:16,882 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 09:41:16,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 4 [2018-10-04 09:41:16,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 09:41:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 09:41:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 09:41:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 09:41:16,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-10-04 09:41:16,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:16,889 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 09:41:16,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:41:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 09:41:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 09:41:16,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:16,894 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-10-04 09:41:16,895 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:16,895 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:16,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-10-04 09:41:16,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:16,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:16,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:16,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:17,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:17,048 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 [2018-10-04 09:41:17,058 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:17,098 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:17,098 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:17,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:17,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:17,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:41:17,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:41:17,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:41:17,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:17,263 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-10-04 09:41:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:17,290 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:41:17,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:41:17,291 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-10-04 09:41:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:17,292 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:41:17,292 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:41:17,292 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 5 [2018-10-04 09:41:17,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:41:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:41:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:41:17,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:41:17,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-04 09:41:17,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:17,297 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:41:17,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:41:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:41:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:41:17,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:17,298 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-10-04 09:41:17,298 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:17,299 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:17,299 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-10-04 09:41:17,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:17,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:17,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:17,301 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:17,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:17,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:17,400 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 [2018-10-04 09:41:17,409 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:17,440 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-04 09:41:17,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:17,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:17,534 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:17,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:41:17,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:41:17,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:41:17,535 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:17,535 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-10-04 09:41:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:17,563 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 09:41:17,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:41:17,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-10-04 09:41:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:17,565 INFO L225 Difference]: With dead ends: 19 [2018-10-04 09:41:17,566 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 09:41:17,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-04 09:41:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 09:41:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 09:41:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 09:41:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 09:41:17,570 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-10-04 09:41:17,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:17,571 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 09:41:17,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:41:17,571 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 09:41:17,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 09:41:17,572 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:17,572 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-10-04 09:41:17,572 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:17,572 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:17,573 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-10-04 09:41:17,573 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:17,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:17,574 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:17,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:17,783 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:17,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:17,783 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:17,811 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:17,924 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:41:17,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:17,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:18,196 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:18,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:18,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:41:18,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:41:18,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:41:18,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:18,219 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-10-04 09:41:18,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:18,242 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:41:18,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:41:18,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-10-04 09:41:18,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:18,245 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:41:18,246 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:41:18,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.1s impTime 7 [2018-10-04 09:41:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:41:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:41:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:41:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:41:18,252 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-10-04 09:41:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:18,252 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:41:18,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:41:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:41:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:41:18,254 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:18,254 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-10-04 09:41:18,254 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:18,254 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:18,254 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-10-04 09:41:18,255 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:18,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:18,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:18,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:18,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:18,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:18,464 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 [2018-10-04 09:41:18,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:18,511 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:18,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:18,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:41:18,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:41:18,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:41:18,746 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:18,746 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-10-04 09:41:18,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:18,820 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-04 09:41:18,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:41:18,821 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-10-04 09:41:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:18,822 INFO L225 Difference]: With dead ends: 23 [2018-10-04 09:41:18,822 INFO L226 Difference]: Without dead ends: 21 [2018-10-04 09:41:18,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 8 [2018-10-04 09:41:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-04 09:41:18,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-04 09:41:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-04 09:41:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-04 09:41:18,827 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-10-04 09:41:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:18,827 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-04 09:41:18,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:41:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-04 09:41:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-04 09:41:18,828 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:18,828 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-10-04 09:41:18,829 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:18,829 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-10-04 09:41:18,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:18,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:18,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:18,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:18,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:19,026 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:19,026 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:19,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:19,082 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:19,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:19,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:19,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:19,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:41:19,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:41:19,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:41:19,180 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:19,180 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 11 states. [2018-10-04 09:41:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:19,229 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-04 09:41:19,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:41:19,231 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2018-10-04 09:41:19,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:19,232 INFO L225 Difference]: With dead ends: 25 [2018-10-04 09:41:19,232 INFO L226 Difference]: Without dead ends: 23 [2018-10-04 09:41:19,233 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 9 [2018-10-04 09:41:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-04 09:41:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-04 09:41:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-04 09:41:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-04 09:41:19,237 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2018-10-04 09:41:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:19,238 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-04 09:41:19,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:41:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-04 09:41:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-04 09:41:19,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:19,239 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1] [2018-10-04 09:41:19,239 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:19,240 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1767155375, now seen corresponding path program 9 times [2018-10-04 09:41:19,240 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:19,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:19,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:19,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:19,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:19,402 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 [2018-10-04 09:41:19,412 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:19,441 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-04 09:41:19,442 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:19,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:19,557 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:19,578 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:19,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:41:19,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:41:19,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:41:19,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:19,579 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 12 states. [2018-10-04 09:41:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:19,620 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-04 09:41:19,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:41:19,622 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-04 09:41:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:19,622 INFO L225 Difference]: With dead ends: 27 [2018-10-04 09:41:19,622 INFO L226 Difference]: Without dead ends: 25 [2018-10-04 09:41:19,623 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 10 [2018-10-04 09:41:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-04 09:41:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-04 09:41:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-04 09:41:19,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-04 09:41:19,627 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2018-10-04 09:41:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:19,628 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-04 09:41:19,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:41:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-04 09:41:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-04 09:41:19,629 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:19,629 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1] [2018-10-04 09:41:19,629 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:19,629 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1724181365, now seen corresponding path program 10 times [2018-10-04 09:41:19,630 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:19,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:19,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,631 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:19,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:19,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:19,806 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 [2018-10-04 09:41:19,822 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:19,865 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:19,865 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:19,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:19,989 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:19,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:41:19,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:41:19,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:41:19,990 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:19,990 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2018-10-04 09:41:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:20,042 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-04 09:41:20,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:41:20,043 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-10-04 09:41:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:20,044 INFO L225 Difference]: With dead ends: 29 [2018-10-04 09:41:20,044 INFO L226 Difference]: Without dead ends: 27 [2018-10-04 09:41:20,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 11 [2018-10-04 09:41:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-04 09:41:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-04 09:41:20,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-04 09:41:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-04 09:41:20,050 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-10-04 09:41:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:20,050 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-04 09:41:20,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:41:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-04 09:41:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-04 09:41:20,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:20,052 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1] [2018-10-04 09:41:20,052 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:20,052 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:20,052 INFO L82 PathProgramCache]: Analyzing trace with hash 919136581, now seen corresponding path program 11 times [2018-10-04 09:41:20,052 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:20,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:20,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:20,053 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:20,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:20,419 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:20,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:20,420 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:20,428 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:20,465 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-04 09:41:20,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:20,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:20,536 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:20,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:20,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:41:20,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:41:20,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:41:20,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:20,568 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 14 states. [2018-10-04 09:41:20,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:20,673 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-04 09:41:20,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:41:20,674 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2018-10-04 09:41:20,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:20,675 INFO L225 Difference]: With dead ends: 31 [2018-10-04 09:41:20,675 INFO L226 Difference]: Without dead ends: 29 [2018-10-04 09:41:20,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 12 [2018-10-04 09:41:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-04 09:41:20,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-04 09:41:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-04 09:41:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-04 09:41:20,680 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2018-10-04 09:41:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:20,680 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-04 09:41:20,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:41:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-04 09:41:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-04 09:41:20,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:20,682 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1] [2018-10-04 09:41:20,682 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:20,682 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1472956545, now seen corresponding path program 12 times [2018-10-04 09:41:20,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:20,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:20,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:20,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:20,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:20,938 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:20,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:20,938 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:20,947 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:20,982 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-04 09:41:20,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:20,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:21,133 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:21,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:41:21,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:41:21,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:41:21,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:21,134 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 15 states. [2018-10-04 09:41:21,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:21,172 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-04 09:41:21,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:41:21,176 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 28 [2018-10-04 09:41:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:21,176 INFO L225 Difference]: With dead ends: 33 [2018-10-04 09:41:21,176 INFO L226 Difference]: Without dead ends: 31 [2018-10-04 09:41:21,176 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 13 [2018-10-04 09:41:21,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-04 09:41:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-04 09:41:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-04 09:41:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-04 09:41:21,181 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2018-10-04 09:41:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:21,182 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-04 09:41:21,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:41:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-04 09:41:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-04 09:41:21,183 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:21,183 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1] [2018-10-04 09:41:21,183 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:21,184 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:21,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1828020025, now seen corresponding path program 13 times [2018-10-04 09:41:21,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:21,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:21,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:21,185 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:21,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:21,395 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:21,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:21,395 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 [2018-10-04 09:41:21,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:21,431 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:21,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:21,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:41:21,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:41:21,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:41:21,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:21,594 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 16 states. [2018-10-04 09:41:21,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:21,771 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-04 09:41:21,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:41:21,771 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 30 [2018-10-04 09:41:21,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:21,773 INFO L225 Difference]: With dead ends: 35 [2018-10-04 09:41:21,773 INFO L226 Difference]: Without dead ends: 33 [2018-10-04 09:41:21,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 14 [2018-10-04 09:41:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-04 09:41:21,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-04 09:41:21,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-04 09:41:21,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-04 09:41:21,779 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-10-04 09:41:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:21,780 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-04 09:41:21,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:41:21,780 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-04 09:41:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-04 09:41:21,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:21,781 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1] [2018-10-04 09:41:21,781 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:21,781 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:21,781 INFO L82 PathProgramCache]: Analyzing trace with hash 85672051, now seen corresponding path program 14 times [2018-10-04 09:41:21,781 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:21,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:21,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:21,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:21,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:22,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:22,281 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:22,290 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:22,340 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:22,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:22,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:22,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:22,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:41:22,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:41:22,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:41:22,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:22,533 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 17 states. [2018-10-04 09:41:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:22,583 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-04 09:41:22,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:41:22,583 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2018-10-04 09:41:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:22,584 INFO L225 Difference]: With dead ends: 37 [2018-10-04 09:41:22,585 INFO L226 Difference]: Without dead ends: 35 [2018-10-04 09:41:22,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 15 [2018-10-04 09:41:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-04 09:41:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-04 09:41:22,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-04 09:41:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-04 09:41:22,590 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-10-04 09:41:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:22,590 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-04 09:41:22,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:41:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-04 09:41:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-04 09:41:22,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:22,591 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1] [2018-10-04 09:41:22,592 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:22,592 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:22,592 INFO L82 PathProgramCache]: Analyzing trace with hash 726514477, now seen corresponding path program 15 times [2018-10-04 09:41:22,592 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:22,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:22,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:22,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:22,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:23,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:23,039 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:23,047 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:23,136 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-04 09:41:23,137 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:23,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:23,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:23,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:41:23,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:41:23,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:41:23,274 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:23,274 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 18 states. [2018-10-04 09:41:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:23,314 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-04 09:41:23,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:41:23,318 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 34 [2018-10-04 09:41:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:23,318 INFO L225 Difference]: With dead ends: 39 [2018-10-04 09:41:23,318 INFO L226 Difference]: Without dead ends: 37 [2018-10-04 09:41:23,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 16 [2018-10-04 09:41:23,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-04 09:41:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-04 09:41:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-04 09:41:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-04 09:41:23,323 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2018-10-04 09:41:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:23,324 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-04 09:41:23,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:41:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-04 09:41:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-04 09:41:23,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:23,325 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1] [2018-10-04 09:41:23,325 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:23,326 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:23,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1899204761, now seen corresponding path program 16 times [2018-10-04 09:41:23,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:23,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:23,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:23,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:23,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:23,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:23,938 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:23,946 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:23,977 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:23,978 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:23,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:24,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:24,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-04 09:41:24,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-04 09:41:24,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-04 09:41:24,439 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:24,439 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 19 states. [2018-10-04 09:41:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:24,475 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-04 09:41:24,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-04 09:41:24,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2018-10-04 09:41:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:24,478 INFO L225 Difference]: With dead ends: 41 [2018-10-04 09:41:24,478 INFO L226 Difference]: Without dead ends: 39 [2018-10-04 09:41:24,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.4s impTime 17 [2018-10-04 09:41:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-04 09:41:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-04 09:41:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-04 09:41:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-04 09:41:24,485 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2018-10-04 09:41:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:24,485 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-04 09:41:24,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-04 09:41:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-04 09:41:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-04 09:41:24,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:24,486 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1] [2018-10-04 09:41:24,487 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:24,491 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:24,491 INFO L82 PathProgramCache]: Analyzing trace with hash 225377569, now seen corresponding path program 17 times [2018-10-04 09:41:24,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:24,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:24,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:24,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:24,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:25,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:25,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:25,550 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:25,626 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-04 09:41:25,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:25,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:25,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:25,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-04 09:41:25,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-04 09:41:25,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-04 09:41:25,759 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:25,759 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 20 states. [2018-10-04 09:41:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:25,799 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-04 09:41:25,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-04 09:41:25,800 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2018-10-04 09:41:25,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:25,801 INFO L225 Difference]: With dead ends: 43 [2018-10-04 09:41:25,801 INFO L226 Difference]: Without dead ends: 41 [2018-10-04 09:41:25,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 18 [2018-10-04 09:41:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-04 09:41:25,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-04 09:41:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-04 09:41:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-04 09:41:25,807 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 38 [2018-10-04 09:41:25,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:25,807 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-04 09:41:25,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-04 09:41:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-04 09:41:25,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-04 09:41:25,808 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:25,808 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1] [2018-10-04 09:41:25,809 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:25,809 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1839531099, now seen corresponding path program 18 times [2018-10-04 09:41:25,809 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:25,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:25,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:25,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:25,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:26,198 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:26,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:26,202 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 [2018-10-04 09:41:26,210 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:26,246 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-04 09:41:26,246 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:26,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:26,892 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:26,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-04 09:41:26,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-04 09:41:26,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-04 09:41:26,893 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:26,893 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 21 states. [2018-10-04 09:41:26,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:26,938 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-04 09:41:26,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-04 09:41:26,939 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 40 [2018-10-04 09:41:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:26,939 INFO L225 Difference]: With dead ends: 45 [2018-10-04 09:41:26,940 INFO L226 Difference]: Without dead ends: 43 [2018-10-04 09:41:26,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.2s impTime 6 [2018-10-04 09:41:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-04 09:41:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-04 09:41:26,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-04 09:41:26,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-04 09:41:26,944 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 40 [2018-10-04 09:41:26,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:26,944 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-04 09:41:26,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-04 09:41:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-04 09:41:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-04 09:41:26,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:26,945 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1] [2018-10-04 09:41:26,946 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:26,946 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:26,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1737087723, now seen corresponding path program 19 times [2018-10-04 09:41:26,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:26,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:26,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:26,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:26,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:28,082 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:28,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:28,099 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:28,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:28,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:28,247 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:28,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-04 09:41:28,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-04 09:41:28,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-04 09:41:28,248 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:28,248 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 22 states. [2018-10-04 09:41:28,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:28,304 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-04 09:41:28,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-04 09:41:28,304 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2018-10-04 09:41:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:28,305 INFO L225 Difference]: With dead ends: 47 [2018-10-04 09:41:28,305 INFO L226 Difference]: Without dead ends: 45 [2018-10-04 09:41:28,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 7 [2018-10-04 09:41:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-04 09:41:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-04 09:41:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-04 09:41:28,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-04 09:41:28,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 42 [2018-10-04 09:41:28,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:28,311 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-04 09:41:28,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-04 09:41:28,311 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-04 09:41:28,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-04 09:41:28,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:28,312 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1] [2018-10-04 09:41:28,313 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:28,313 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1401028431, now seen corresponding path program 20 times [2018-10-04 09:41:28,313 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:28,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:28,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:28,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:28,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:28,681 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:28,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:28,709 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 [2018-10-04 09:41:28,723 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:28,769 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:28,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:28,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:28,929 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:28,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-04 09:41:28,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-04 09:41:28,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-04 09:41:28,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:28,930 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 23 states. [2018-10-04 09:41:29,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:29,003 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-04 09:41:29,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-04 09:41:29,003 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2018-10-04 09:41:29,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:29,004 INFO L225 Difference]: With dead ends: 49 [2018-10-04 09:41:29,004 INFO L226 Difference]: Without dead ends: 47 [2018-10-04 09:41:29,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 8 [2018-10-04 09:41:29,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-04 09:41:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-04 09:41:29,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-04 09:41:29,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-04 09:41:29,009 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 44 [2018-10-04 09:41:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:29,010 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-04 09:41:29,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-04 09:41:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-04 09:41:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-04 09:41:29,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:29,011 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1] [2018-10-04 09:41:29,011 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:29,011 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2063610633, now seen corresponding path program 21 times [2018-10-04 09:41:29,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:29,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:29,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:29,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:29,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:29,316 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:29,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:29,348 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 [2018-10-04 09:41:29,357 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:29,410 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-04 09:41:29,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:29,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:29,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:29,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-04 09:41:29,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-04 09:41:29,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-04 09:41:29,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:29,538 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2018-10-04 09:41:29,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:29,665 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-04 09:41:29,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-04 09:41:29,666 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2018-10-04 09:41:29,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:29,667 INFO L225 Difference]: With dead ends: 51 [2018-10-04 09:41:29,667 INFO L226 Difference]: Without dead ends: 49 [2018-10-04 09:41:29,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 9 [2018-10-04 09:41:29,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-04 09:41:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-04 09:41:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-04 09:41:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-04 09:41:29,672 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 46 [2018-10-04 09:41:29,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:29,672 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-04 09:41:29,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-04 09:41:29,672 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-04 09:41:29,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-04 09:41:29,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:29,673 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1] [2018-10-04 09:41:29,674 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:29,674 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:29,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1145020349, now seen corresponding path program 22 times [2018-10-04 09:41:29,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:29,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:29,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:29,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:29,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:30,188 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:30,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:30,221 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:30,228 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:30,267 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:30,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:30,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:30,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:30,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-04 09:41:30,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-04 09:41:30,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-04 09:41:30,389 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:30,389 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 25 states. [2018-10-04 09:41:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:30,600 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-04 09:41:30,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-04 09:41:30,601 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2018-10-04 09:41:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:30,601 INFO L225 Difference]: With dead ends: 53 [2018-10-04 09:41:30,601 INFO L226 Difference]: Without dead ends: 51 [2018-10-04 09:41:30,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 10 [2018-10-04 09:41:30,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-04 09:41:30,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-04 09:41:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-04 09:41:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-04 09:41:30,606 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-04 09:41:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:30,607 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-04 09:41:30,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-04 09:41:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-04 09:41:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-04 09:41:30,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:30,607 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1] [2018-10-04 09:41:30,608 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:30,608 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash -852875523, now seen corresponding path program 23 times [2018-10-04 09:41:30,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:30,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:30,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:30,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:30,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:30,951 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:31,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:31,053 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:31,061 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:31,118 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-04 09:41:31,118 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:31,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:31,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:31,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-04 09:41:31,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-04 09:41:31,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-04 09:41:31,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:31,363 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 26 states. [2018-10-04 09:41:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:31,400 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-04 09:41:31,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-04 09:41:31,401 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 50 [2018-10-04 09:41:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:31,401 INFO L225 Difference]: With dead ends: 55 [2018-10-04 09:41:31,401 INFO L226 Difference]: Without dead ends: 53 [2018-10-04 09:41:31,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 11 [2018-10-04 09:41:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-04 09:41:31,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-04 09:41:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-04 09:41:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-04 09:41:31,406 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 50 [2018-10-04 09:41:31,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:31,407 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-04 09:41:31,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-04 09:41:31,407 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-04 09:41:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-04 09:41:31,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:31,407 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1] [2018-10-04 09:41:31,408 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:31,408 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:31,408 INFO L82 PathProgramCache]: Analyzing trace with hash 725428023, now seen corresponding path program 24 times [2018-10-04 09:41:31,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:31,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:31,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:31,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:31,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:31,623 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:31,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:31,678 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 [2018-10-04 09:41:31,685 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:31,747 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-04 09:41:31,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:31,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:31,839 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:31,859 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:31,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-04 09:41:31,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-04 09:41:31,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-04 09:41:31,860 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:31,860 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 27 states. [2018-10-04 09:41:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:31,907 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-04 09:41:31,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-04 09:41:31,907 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 52 [2018-10-04 09:41:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:31,908 INFO L225 Difference]: With dead ends: 57 [2018-10-04 09:41:31,908 INFO L226 Difference]: Without dead ends: 55 [2018-10-04 09:41:31,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 12 [2018-10-04 09:41:31,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-04 09:41:31,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-04 09:41:31,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-04 09:41:31,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-04 09:41:31,913 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 52 [2018-10-04 09:41:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:31,914 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-04 09:41:31,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-04 09:41:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-04 09:41:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-04 09:41:31,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:31,915 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1] [2018-10-04 09:41:31,915 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:31,915 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1351680241, now seen corresponding path program 25 times [2018-10-04 09:41:31,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:31,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:31,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:31,916 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:31,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:32,214 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:32,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:32,321 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:32,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:32,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:32,618 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:32,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-04 09:41:32,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-04 09:41:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-04 09:41:32,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:32,619 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 28 states. [2018-10-04 09:41:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:32,734 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-04 09:41:32,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-04 09:41:32,735 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 54 [2018-10-04 09:41:32,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:32,735 INFO L225 Difference]: With dead ends: 59 [2018-10-04 09:41:32,735 INFO L226 Difference]: Without dead ends: 57 [2018-10-04 09:41:32,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 13 [2018-10-04 09:41:32,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-04 09:41:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-04 09:41:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-04 09:41:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-04 09:41:32,740 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 54 [2018-10-04 09:41:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:32,741 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-04 09:41:32,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-04 09:41:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-04 09:41:32,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-04 09:41:32,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:32,742 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1] [2018-10-04 09:41:32,742 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:32,742 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:32,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1884640299, now seen corresponding path program 26 times [2018-10-04 09:41:32,742 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:32,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:32,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:32,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:32,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:33,616 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:33,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:33,749 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:33,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:33,810 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:33,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:33,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:33,948 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:33,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-04 09:41:33,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-04 09:41:33,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-04 09:41:33,949 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:33,949 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 29 states. [2018-10-04 09:41:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:33,994 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-04 09:41:33,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-04 09:41:33,994 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 56 [2018-10-04 09:41:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:33,995 INFO L225 Difference]: With dead ends: 61 [2018-10-04 09:41:33,995 INFO L226 Difference]: Without dead ends: 59 [2018-10-04 09:41:33,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 14 [2018-10-04 09:41:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-04 09:41:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-04 09:41:33,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-04 09:41:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-04 09:41:33,999 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 56 [2018-10-04 09:41:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:34,000 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-04 09:41:34,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-04 09:41:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-04 09:41:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-04 09:41:34,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:34,002 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1] [2018-10-04 09:41:34,002 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:34,002 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:34,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1336819483, now seen corresponding path program 27 times [2018-10-04 09:41:34,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:34,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:34,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:34,004 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:34,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:34,352 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:34,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:34,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:34,505 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:34,563 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-04 09:41:34,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:34,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:34,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:34,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-04 09:41:34,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-04 09:41:34,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-04 09:41:34,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:34,698 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 30 states. [2018-10-04 09:41:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:34,745 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-04 09:41:34,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-04 09:41:34,745 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 58 [2018-10-04 09:41:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:34,746 INFO L225 Difference]: With dead ends: 63 [2018-10-04 09:41:34,746 INFO L226 Difference]: Without dead ends: 61 [2018-10-04 09:41:34,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 15 [2018-10-04 09:41:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-04 09:41:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-04 09:41:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-04 09:41:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-04 09:41:34,751 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 58 [2018-10-04 09:41:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:34,751 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-04 09:41:34,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-04 09:41:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-04 09:41:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-04 09:41:34,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:34,752 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1] [2018-10-04 09:41:34,752 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:34,752 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:34,752 INFO L82 PathProgramCache]: Analyzing trace with hash -488249569, now seen corresponding path program 28 times [2018-10-04 09:41:34,752 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:34,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:34,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:34,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:34,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:35,114 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:35,356 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:35,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:35,357 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 [2018-10-04 09:41:35,379 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:35,422 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:35,423 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:35,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:35,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:35,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-04 09:41:35,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-04 09:41:35,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-04 09:41:35,586 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:35,586 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 31 states. [2018-10-04 09:41:35,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:35,691 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-04 09:41:35,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-04 09:41:35,691 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 60 [2018-10-04 09:41:35,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:35,692 INFO L225 Difference]: With dead ends: 65 [2018-10-04 09:41:35,693 INFO L226 Difference]: Without dead ends: 63 [2018-10-04 09:41:35,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime 16 [2018-10-04 09:41:35,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-04 09:41:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-04 09:41:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-04 09:41:35,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-04 09:41:35,695 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 60 [2018-10-04 09:41:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:35,696 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-04 09:41:35,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-04 09:41:35,696 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-04 09:41:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-04 09:41:35,696 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:35,696 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1] [2018-10-04 09:41:35,697 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:35,697 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1056348455, now seen corresponding path program 29 times [2018-10-04 09:41:35,697 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:35,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:35,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:35,698 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:35,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:36,015 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:36,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:36,105 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 [2018-10-04 09:41:36,120 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:36,194 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-04 09:41:36,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:36,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:36,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:36,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-04 09:41:36,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-04 09:41:36,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-04 09:41:36,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:36,342 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 32 states. [2018-10-04 09:41:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:36,385 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-04 09:41:36,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-04 09:41:36,386 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 62 [2018-10-04 09:41:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:36,386 INFO L225 Difference]: With dead ends: 67 [2018-10-04 09:41:36,386 INFO L226 Difference]: Without dead ends: 65 [2018-10-04 09:41:36,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 17 [2018-10-04 09:41:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-04 09:41:36,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-04 09:41:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-04 09:41:36,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-04 09:41:36,390 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 62 [2018-10-04 09:41:36,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:36,391 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-04 09:41:36,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-04 09:41:36,391 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-04 09:41:36,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-04 09:41:36,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:36,391 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1] [2018-10-04 09:41:36,392 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:36,392 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:36,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1538531309, now seen corresponding path program 30 times [2018-10-04 09:41:36,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:36,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:36,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:36,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:36,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:37,181 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:37,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:37,537 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 [2018-10-04 09:41:37,546 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:37,615 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-04 09:41:37,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:37,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:37,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:37,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-04 09:41:37,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-04 09:41:37,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-04 09:41:37,842 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:37,842 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 33 states. [2018-10-04 09:41:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:37,906 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-04 09:41:37,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-04 09:41:37,906 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 64 [2018-10-04 09:41:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:37,907 INFO L225 Difference]: With dead ends: 69 [2018-10-04 09:41:37,907 INFO L226 Difference]: Without dead ends: 67 [2018-10-04 09:41:37,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 18 [2018-10-04 09:41:37,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-04 09:41:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-04 09:41:37,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-04 09:41:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-04 09:41:37,911 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 64 [2018-10-04 09:41:37,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:37,911 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-04 09:41:37,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-04 09:41:37,911 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-04 09:41:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-04 09:41:37,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:37,912 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1] [2018-10-04 09:41:37,912 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:37,912 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:37,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1059786035, now seen corresponding path program 31 times [2018-10-04 09:41:37,912 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:37,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:37,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:37,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:37,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:38,248 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:38,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:38,407 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 [2018-10-04 09:41:38,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:38,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:38,572 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:38,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:38,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-04 09:41:38,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-04 09:41:38,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-04 09:41:38,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:38,593 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 34 states. [2018-10-04 09:41:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:38,639 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-04 09:41:38,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-04 09:41:38,640 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 66 [2018-10-04 09:41:38,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:38,641 INFO L225 Difference]: With dead ends: 71 [2018-10-04 09:41:38,641 INFO L226 Difference]: Without dead ends: 69 [2018-10-04 09:41:38,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 19 [2018-10-04 09:41:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-04 09:41:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-04 09:41:38,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-04 09:41:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-04 09:41:38,644 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 66 [2018-10-04 09:41:38,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:38,645 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-04 09:41:38,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-04 09:41:38,645 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-04 09:41:38,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-04 09:41:38,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:38,645 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1] [2018-10-04 09:41:38,645 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:38,645 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:38,646 INFO L82 PathProgramCache]: Analyzing trace with hash -547078393, now seen corresponding path program 32 times [2018-10-04 09:41:38,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:38,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:38,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:38,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:38,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:39,293 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:39,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:39,646 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 [2018-10-04 09:41:39,654 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:39,710 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:39,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:39,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:39,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:39,870 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:39,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-04 09:41:39,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-04 09:41:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-04 09:41:39,871 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:39,872 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 35 states. [2018-10-04 09:41:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:39,932 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-04 09:41:39,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-04 09:41:39,932 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 68 [2018-10-04 09:41:39,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:39,933 INFO L225 Difference]: With dead ends: 73 [2018-10-04 09:41:39,933 INFO L226 Difference]: Without dead ends: 71 [2018-10-04 09:41:39,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 20 [2018-10-04 09:41:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-04 09:41:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-04 09:41:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-04 09:41:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-04 09:41:39,937 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 68 [2018-10-04 09:41:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:39,937 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-04 09:41:39,937 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-04 09:41:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-04 09:41:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-04 09:41:39,938 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:39,938 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1] [2018-10-04 09:41:39,938 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:39,938 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:39,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1756273471, now seen corresponding path program 33 times [2018-10-04 09:41:39,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:39,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:39,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:39,940 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:39,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:40,349 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:40,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:40,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:40,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:40,595 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-04 09:41:40,596 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:40,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:40,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:40,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-04 09:41:40,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-04 09:41:40,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-04 09:41:40,766 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:40,766 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 36 states. [2018-10-04 09:41:40,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:40,823 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-04 09:41:40,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-04 09:41:40,823 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 70 [2018-10-04 09:41:40,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:40,824 INFO L225 Difference]: With dead ends: 75 [2018-10-04 09:41:40,824 INFO L226 Difference]: Without dead ends: 73 [2018-10-04 09:41:40,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 21 [2018-10-04 09:41:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-04 09:41:40,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-04 09:41:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-04 09:41:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-04 09:41:40,828 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 70 [2018-10-04 09:41:40,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:40,828 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-04 09:41:40,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-04 09:41:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-04 09:41:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-04 09:41:40,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:40,829 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1] [2018-10-04 09:41:40,829 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:40,830 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:40,830 INFO L82 PathProgramCache]: Analyzing trace with hash 143393787, now seen corresponding path program 34 times [2018-10-04 09:41:40,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:40,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:40,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:40,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:40,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:41,690 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:41,885 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:41,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:41,891 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 [2018-10-04 09:41:41,899 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:41,953 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:41,953 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:41,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:42,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:42,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-04 09:41:42,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-04 09:41:42,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-04 09:41:42,138 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:42,138 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 37 states. [2018-10-04 09:41:42,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:42,272 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-04 09:41:42,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-04 09:41:42,272 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 72 [2018-10-04 09:41:42,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:42,273 INFO L225 Difference]: With dead ends: 77 [2018-10-04 09:41:42,273 INFO L226 Difference]: Without dead ends: 75 [2018-10-04 09:41:42,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 7 [2018-10-04 09:41:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-04 09:41:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-04 09:41:42,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-04 09:41:42,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-04 09:41:42,278 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 72 [2018-10-04 09:41:42,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:42,278 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-04 09:41:42,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-04 09:41:42,278 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-04 09:41:42,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-04 09:41:42,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:42,279 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1] [2018-10-04 09:41:42,279 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:42,279 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:42,279 INFO L82 PathProgramCache]: Analyzing trace with hash 362527925, now seen corresponding path program 35 times [2018-10-04 09:41:42,279 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:42,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:42,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:42,280 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:42,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:42,532 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:43,110 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:43,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:43,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:43,141 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:43,148 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:43,223 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-04 09:41:43,223 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:43,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:44,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:44,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-04 09:41:44,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-04 09:41:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-04 09:41:44,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:44,318 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 38 states. [2018-10-04 09:41:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:44,707 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-04 09:41:44,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-04 09:41:44,708 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 74 [2018-10-04 09:41:44,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:44,709 INFO L225 Difference]: With dead ends: 79 [2018-10-04 09:41:44,709 INFO L226 Difference]: Without dead ends: 77 [2018-10-04 09:41:44,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 0.6s impTime 8 [2018-10-04 09:41:44,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-04 09:41:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-04 09:41:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-04 09:41:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-04 09:41:44,712 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 74 [2018-10-04 09:41:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:44,713 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-04 09:41:44,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-04 09:41:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-04 09:41:44,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-04 09:41:44,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:44,713 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1] [2018-10-04 09:41:44,714 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:44,714 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:44,714 INFO L82 PathProgramCache]: Analyzing trace with hash 497037039, now seen corresponding path program 36 times [2018-10-04 09:41:44,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:44,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:44,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:44,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:44,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:44,966 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:45,393 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:45,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:45,590 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 [2018-10-04 09:41:45,597 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:45,672 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-04 09:41:45,672 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:45,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:45,829 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:45,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-04 09:41:45,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-04 09:41:45,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-04 09:41:45,830 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:45,830 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 39 states. [2018-10-04 09:41:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:45,902 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-04 09:41:45,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-04 09:41:45,902 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 76 [2018-10-04 09:41:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:45,903 INFO L225 Difference]: With dead ends: 81 [2018-10-04 09:41:45,904 INFO L226 Difference]: Without dead ends: 79 [2018-10-04 09:41:45,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 9 [2018-10-04 09:41:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-04 09:41:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-04 09:41:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-04 09:41:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-04 09:41:45,908 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 76 [2018-10-04 09:41:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:45,908 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-04 09:41:45,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-04 09:41:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-04 09:41:45,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-04 09:41:45,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:45,909 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1] [2018-10-04 09:41:45,909 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:45,909 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:45,909 INFO L82 PathProgramCache]: Analyzing trace with hash 911276713, now seen corresponding path program 37 times [2018-10-04 09:41:45,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:45,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:45,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:45,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:45,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:46,186 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:47,250 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:47,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:47,356 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:47,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:47,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:47,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:47,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-04 09:41:47,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-04 09:41:47,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-04 09:41:47,621 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:47,622 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 40 states. [2018-10-04 09:41:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:47,778 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-04 09:41:47,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-04 09:41:47,778 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 78 [2018-10-04 09:41:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:47,779 INFO L225 Difference]: With dead ends: 83 [2018-10-04 09:41:47,779 INFO L226 Difference]: Without dead ends: 81 [2018-10-04 09:41:47,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 10 [2018-10-04 09:41:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-04 09:41:47,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-04 09:41:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-04 09:41:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-04 09:41:47,784 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 78 [2018-10-04 09:41:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:47,784 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-04 09:41:47,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-04 09:41:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-04 09:41:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-04 09:41:47,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:47,785 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1] [2018-10-04 09:41:47,786 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:47,786 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:47,786 INFO L82 PathProgramCache]: Analyzing trace with hash -436355101, now seen corresponding path program 38 times [2018-10-04 09:41:47,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:47,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:47,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:47,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:47,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:48,178 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:48,816 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:48,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:48,988 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:48,996 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:49,063 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:49,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:49,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:49,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:49,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-04 09:41:49,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-04 09:41:49,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-04 09:41:49,238 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:49,238 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 41 states. [2018-10-04 09:41:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:49,365 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-04 09:41:49,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-04 09:41:49,365 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 80 [2018-10-04 09:41:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:49,366 INFO L225 Difference]: With dead ends: 85 [2018-10-04 09:41:49,366 INFO L226 Difference]: Without dead ends: 83 [2018-10-04 09:41:49,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 11 [2018-10-04 09:41:49,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-04 09:41:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-04 09:41:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-04 09:41:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-04 09:41:49,370 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 80 [2018-10-04 09:41:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:49,370 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-04 09:41:49,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-04 09:41:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-04 09:41:49,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-04 09:41:49,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:49,370 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1] [2018-10-04 09:41:49,371 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:49,371 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:49,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1569595037, now seen corresponding path program 39 times [2018-10-04 09:41:49,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:49,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:49,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:49,371 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:49,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:49,680 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:49,871 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:49,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:49,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:49,951 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:50,033 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-04 09:41:50,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:50,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:50,190 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:50,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-04 09:41:50,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-04 09:41:50,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-04 09:41:50,191 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:50,191 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 42 states. [2018-10-04 09:41:50,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:50,265 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-04 09:41:50,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-04 09:41:50,268 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 82 [2018-10-04 09:41:50,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:50,269 INFO L225 Difference]: With dead ends: 87 [2018-10-04 09:41:50,269 INFO L226 Difference]: Without dead ends: 85 [2018-10-04 09:41:50,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 12 [2018-10-04 09:41:50,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-04 09:41:50,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-04 09:41:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-04 09:41:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-04 09:41:50,271 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 82 [2018-10-04 09:41:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:50,272 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-04 09:41:50,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-04 09:41:50,272 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-04 09:41:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-04 09:41:50,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:50,272 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1] [2018-10-04 09:41:50,272 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:50,273 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:50,273 INFO L82 PathProgramCache]: Analyzing trace with hash 847361751, now seen corresponding path program 40 times [2018-10-04 09:41:50,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:50,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:50,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:50,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:50,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:50,651 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:51,030 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:51,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:51,239 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 [2018-10-04 09:41:51,247 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:41:51,303 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:41:51,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:51,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:51,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:51,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-04 09:41:51,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-04 09:41:51,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-04 09:41:51,460 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:51,461 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 43 states. [2018-10-04 09:41:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:51,628 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-04 09:41:51,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-04 09:41:51,629 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 84 [2018-10-04 09:41:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:51,630 INFO L225 Difference]: With dead ends: 89 [2018-10-04 09:41:51,630 INFO L226 Difference]: Without dead ends: 87 [2018-10-04 09:41:51,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 13 [2018-10-04 09:41:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-04 09:41:51,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-04 09:41:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-04 09:41:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-04 09:41:51,634 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 84 [2018-10-04 09:41:51,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:51,635 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-04 09:41:51,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-04 09:41:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-04 09:41:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-04 09:41:51,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:51,635 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1] [2018-10-04 09:41:51,635 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:51,635 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:51,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1729091439, now seen corresponding path program 41 times [2018-10-04 09:41:51,636 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:51,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:51,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:51,637 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:51,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:51,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:51,947 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:52,326 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:52,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:52,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:52,581 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 [2018-10-04 09:41:52,589 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:41:52,691 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-04 09:41:52,691 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:52,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:53,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:53,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-04 09:41:53,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-04 09:41:53,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-04 09:41:53,015 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:53,015 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 44 states. [2018-10-04 09:41:53,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:53,152 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-04 09:41:53,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-04 09:41:53,152 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 86 [2018-10-04 09:41:53,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:53,153 INFO L225 Difference]: With dead ends: 91 [2018-10-04 09:41:53,153 INFO L226 Difference]: Without dead ends: 89 [2018-10-04 09:41:53,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 14 [2018-10-04 09:41:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-04 09:41:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-04 09:41:53,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-04 09:41:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-04 09:41:53,157 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 86 [2018-10-04 09:41:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:53,157 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-04 09:41:53,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-04 09:41:53,157 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-04 09:41:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-04 09:41:53,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:53,158 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1] [2018-10-04 09:41:53,158 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:53,158 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:53,158 INFO L82 PathProgramCache]: Analyzing trace with hash 495522763, now seen corresponding path program 42 times [2018-10-04 09:41:53,158 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:53,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:53,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:53,159 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:53,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:53,536 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:53,919 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:54,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:54,089 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 [2018-10-04 09:41:54,096 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:41:54,197 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-04 09:41:54,197 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:54,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:54,404 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:54,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-04 09:41:54,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-04 09:41:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-04 09:41:54,405 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:54,405 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 45 states. [2018-10-04 09:41:54,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:54,459 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-04 09:41:54,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-04 09:41:54,460 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 88 [2018-10-04 09:41:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:54,461 INFO L225 Difference]: With dead ends: 93 [2018-10-04 09:41:54,461 INFO L226 Difference]: Without dead ends: 91 [2018-10-04 09:41:54,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 15 [2018-10-04 09:41:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-04 09:41:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-04 09:41:54,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-04 09:41:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-04 09:41:54,465 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 88 [2018-10-04 09:41:54,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:54,466 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-04 09:41:54,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-04 09:41:54,466 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-04 09:41:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-04 09:41:54,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:54,466 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1] [2018-10-04 09:41:54,466 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:54,466 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash -543942523, now seen corresponding path program 43 times [2018-10-04 09:41:54,467 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:54,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:54,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:54,467 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:54,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:54,734 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:55,412 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:55,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:55,672 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:41:55,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:55,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:55,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:55,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-04 09:41:55,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-04 09:41:55,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-04 09:41:55,945 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:55,945 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 46 states. [2018-10-04 09:41:56,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:56,029 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-04 09:41:56,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-04 09:41:56,030 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 90 [2018-10-04 09:41:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:56,031 INFO L225 Difference]: With dead ends: 95 [2018-10-04 09:41:56,031 INFO L226 Difference]: Without dead ends: 93 [2018-10-04 09:41:56,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 16 [2018-10-04 09:41:56,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-04 09:41:56,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-04 09:41:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-04 09:41:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-04 09:41:56,035 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 90 [2018-10-04 09:41:56,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:56,035 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-04 09:41:56,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-04 09:41:56,036 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-04 09:41:56,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-04 09:41:56,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:56,036 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1] [2018-10-04 09:41:56,036 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:56,036 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:56,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1257297599, now seen corresponding path program 44 times [2018-10-04 09:41:56,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:56,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:56,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:56,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:41:56,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:57,387 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:57,584 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:57,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:57,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:57,765 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 [2018-10-04 09:41:57,775 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:41:57,841 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:41:57,841 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:57,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:41:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:58,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:41:58,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-04 09:41:58,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-04 09:41:58,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-04 09:41:58,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:41:58,209 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 47 states. [2018-10-04 09:41:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:41:58,504 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-04 09:41:58,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-04 09:41:58,504 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 92 [2018-10-04 09:41:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:41:58,505 INFO L225 Difference]: With dead ends: 97 [2018-10-04 09:41:58,505 INFO L226 Difference]: Without dead ends: 95 [2018-10-04 09:41:58,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.2s impTime 17 [2018-10-04 09:41:58,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-04 09:41:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-04 09:41:58,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-04 09:41:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-04 09:41:58,510 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 92 [2018-10-04 09:41:58,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:41:58,511 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-04 09:41:58,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-04 09:41:58,511 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-04 09:41:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-04 09:41:58,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:41:58,512 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1] [2018-10-04 09:41:58,512 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:41:58,512 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:41:58,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1377234553, now seen corresponding path program 45 times [2018-10-04 09:41:58,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:41:58,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:41:58,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:58,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:41:58,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:41:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:41:59,306 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:41:59,481 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:41:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:41:59,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:41:59,709 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 [2018-10-04 09:41:59,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:41:59,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-04 09:41:59,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:41:59,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:00,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:00,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-04 09:42:00,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-04 09:42:00,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-04 09:42:00,037 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:00,037 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 48 states. [2018-10-04 09:42:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:00,104 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-04 09:42:00,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-04 09:42:00,105 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 94 [2018-10-04 09:42:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:00,106 INFO L225 Difference]: With dead ends: 99 [2018-10-04 09:42:00,106 INFO L226 Difference]: Without dead ends: 97 [2018-10-04 09:42:00,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.8s impTime 18 [2018-10-04 09:42:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-04 09:42:00,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-04 09:42:00,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-04 09:42:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-04 09:42:00,108 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 94 [2018-10-04 09:42:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:00,109 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-04 09:42:00,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-04 09:42:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-04 09:42:00,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-04 09:42:00,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:00,109 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1] [2018-10-04 09:42:00,109 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:00,110 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash 672530355, now seen corresponding path program 46 times [2018-10-04 09:42:00,110 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:00,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:00,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:00,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:00,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:00,888 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:01,311 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:01,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:01,772 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 [2018-10-04 09:42:01,780 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:01,863 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:01,863 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:01,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:03,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:03,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-04 09:42:03,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-04 09:42:03,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-04 09:42:03,514 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:03,514 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 49 states. [2018-10-04 09:42:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:03,608 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-04 09:42:03,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-04 09:42:03,609 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 96 [2018-10-04 09:42:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:03,610 INFO L225 Difference]: With dead ends: 101 [2018-10-04 09:42:03,610 INFO L226 Difference]: Without dead ends: 99 [2018-10-04 09:42:03,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 1.3s impTime 19 [2018-10-04 09:42:03,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-04 09:42:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-04 09:42:03,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-04 09:42:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-04 09:42:03,614 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 96 [2018-10-04 09:42:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:03,615 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-04 09:42:03,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-04 09:42:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-04 09:42:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-04 09:42:03,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:03,615 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1] [2018-10-04 09:42:03,615 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:03,616 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 2056628845, now seen corresponding path program 47 times [2018-10-04 09:42:03,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:03,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:03,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:03,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:03,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:03,878 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:04,083 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:04,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:04,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:04,316 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 [2018-10-04 09:42:04,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:04,425 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-04 09:42:04,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:04,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:04,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:04,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-04 09:42:04,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-04 09:42:04,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-04 09:42:04,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:04,651 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 50 states. [2018-10-04 09:42:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:04,724 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-04 09:42:04,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-04 09:42:04,724 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 98 [2018-10-04 09:42:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:04,725 INFO L225 Difference]: With dead ends: 103 [2018-10-04 09:42:04,726 INFO L226 Difference]: Without dead ends: 101 [2018-10-04 09:42:04,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 20 [2018-10-04 09:42:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-04 09:42:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-04 09:42:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-04 09:42:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-04 09:42:04,730 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 98 [2018-10-04 09:42:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:04,730 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-04 09:42:04,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-04 09:42:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-04 09:42:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-04 09:42:04,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:04,731 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1] [2018-10-04 09:42:04,731 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:04,731 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash 735415975, now seen corresponding path program 48 times [2018-10-04 09:42:04,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:04,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:04,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:04,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:04,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:05,009 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:05,323 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:05,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:05,499 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:05,506 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:05,615 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-04 09:42:05,615 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:05,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:05,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:05,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-04 09:42:05,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-04 09:42:05,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-04 09:42:05,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:05,805 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 51 states. [2018-10-04 09:42:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:05,913 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-04 09:42:05,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-04 09:42:05,914 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 100 [2018-10-04 09:42:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:05,915 INFO L225 Difference]: With dead ends: 105 [2018-10-04 09:42:05,915 INFO L226 Difference]: Without dead ends: 103 [2018-10-04 09:42:05,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime 21 [2018-10-04 09:42:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-04 09:42:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-04 09:42:05,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-04 09:42:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-04 09:42:05,920 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 100 [2018-10-04 09:42:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:05,920 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-04 09:42:05,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-04 09:42:05,920 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-04 09:42:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-04 09:42:05,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:05,921 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1] [2018-10-04 09:42:05,921 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:05,921 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:05,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1934799775, now seen corresponding path program 49 times [2018-10-04 09:42:05,921 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:05,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:05,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:05,922 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:05,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:06,172 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:06,350 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:06,698 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:06,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:06,709 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 [2018-10-04 09:42:06,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:06,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:06,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:06,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-04 09:42:06,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-04 09:42:06,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-04 09:42:06,987 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:06,987 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 52 states. [2018-10-04 09:42:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:07,077 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-04 09:42:07,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-04 09:42:07,077 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 102 [2018-10-04 09:42:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:07,079 INFO L225 Difference]: With dead ends: 107 [2018-10-04 09:42:07,079 INFO L226 Difference]: Without dead ends: 105 [2018-10-04 09:42:07,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 7 [2018-10-04 09:42:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-04 09:42:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-04 09:42:07,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-04 09:42:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-04 09:42:07,083 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 102 [2018-10-04 09:42:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:07,084 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-04 09:42:07,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-04 09:42:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-04 09:42:07,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-04 09:42:07,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:07,085 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1] [2018-10-04 09:42:07,085 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:07,085 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 378307483, now seen corresponding path program 50 times [2018-10-04 09:42:07,085 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:07,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:07,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:07,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:07,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:07,349 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:07,750 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:08,600 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:08,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:08,656 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 [2018-10-04 09:42:08,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:08,742 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:08,742 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:08,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:09,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:09,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-04 09:42:09,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-04 09:42:09,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-04 09:42:09,040 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:09,040 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 53 states. [2018-10-04 09:42:09,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:09,207 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-04 09:42:09,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-04 09:42:09,207 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 104 [2018-10-04 09:42:09,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:09,209 INFO L225 Difference]: With dead ends: 109 [2018-10-04 09:42:09,209 INFO L226 Difference]: Without dead ends: 107 [2018-10-04 09:42:09,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime 8 [2018-10-04 09:42:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-04 09:42:09,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-04 09:42:09,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-04 09:42:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-04 09:42:09,213 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 104 [2018-10-04 09:42:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:09,213 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-04 09:42:09,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-04 09:42:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-04 09:42:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-04 09:42:09,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:09,214 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1] [2018-10-04 09:42:09,214 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:09,215 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:09,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1518676907, now seen corresponding path program 51 times [2018-10-04 09:42:09,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:09,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:09,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:09,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:09,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:09,825 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:10,145 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:10,656 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:10,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:10,757 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:10,764 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:10,887 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-04 09:42:10,887 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:10,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:11,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:11,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-04 09:42:11,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-04 09:42:11,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-04 09:42:11,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:11,387 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 54 states. [2018-10-04 09:42:11,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:11,483 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-04 09:42:11,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-04 09:42:11,484 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 106 [2018-10-04 09:42:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:11,485 INFO L225 Difference]: With dead ends: 111 [2018-10-04 09:42:11,485 INFO L226 Difference]: Without dead ends: 109 [2018-10-04 09:42:11,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.1s impTime 9 [2018-10-04 09:42:11,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-04 09:42:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-04 09:42:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-04 09:42:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-04 09:42:11,489 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 106 [2018-10-04 09:42:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:11,489 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-04 09:42:11,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-04 09:42:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-04 09:42:11,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-04 09:42:11,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:11,490 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1] [2018-10-04 09:42:11,490 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:11,490 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash 840425103, now seen corresponding path program 52 times [2018-10-04 09:42:11,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:11,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:11,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:11,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:11,928 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:12,249 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:12,783 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:12,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:12,917 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:12,932 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:13,021 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:13,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:13,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:13,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:13,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:13,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-04 09:42:13,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-04 09:42:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-04 09:42:13,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:13,230 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 55 states. [2018-10-04 09:42:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:13,368 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-04 09:42:13,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-04 09:42:13,369 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 108 [2018-10-04 09:42:13,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:13,369 INFO L225 Difference]: With dead ends: 113 [2018-10-04 09:42:13,369 INFO L226 Difference]: Without dead ends: 111 [2018-10-04 09:42:13,369 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 10 [2018-10-04 09:42:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-04 09:42:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-04 09:42:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-04 09:42:13,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-04 09:42:13,372 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 108 [2018-10-04 09:42:13,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:13,372 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-04 09:42:13,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-04 09:42:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-04 09:42:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-04 09:42:13,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:13,373 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1] [2018-10-04 09:42:13,373 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:13,373 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:13,373 INFO L82 PathProgramCache]: Analyzing trace with hash 194724425, now seen corresponding path program 53 times [2018-10-04 09:42:13,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:13,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:13,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:13,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:13,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:13,758 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:14,117 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:14,736 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:14,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:14,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:14,864 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:15,027 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-04 09:42:15,027 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:15,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:15,321 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:15,321 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-04 09:42:15,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-04 09:42:15,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-04 09:42:15,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:15,322 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 56 states. [2018-10-04 09:42:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:15,397 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-04 09:42:15,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-04 09:42:15,398 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 110 [2018-10-04 09:42:15,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:15,399 INFO L225 Difference]: With dead ends: 115 [2018-10-04 09:42:15,399 INFO L226 Difference]: Without dead ends: 113 [2018-10-04 09:42:15,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 11 [2018-10-04 09:42:15,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-04 09:42:15,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-04 09:42:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-04 09:42:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-04 09:42:15,403 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 110 [2018-10-04 09:42:15,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:15,404 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-04 09:42:15,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-04 09:42:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-04 09:42:15,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-04 09:42:15,405 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:15,405 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1] [2018-10-04 09:42:15,405 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:15,405 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1848336509, now seen corresponding path program 54 times [2018-10-04 09:42:15,405 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:15,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:15,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:15,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:15,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:15,630 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:15,855 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:16,314 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:16,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:16,556 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:16,563 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:16,703 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-04 09:42:16,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:16,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:17,001 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:17,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-04 09:42:17,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-04 09:42:17,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-04 09:42:17,002 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:17,002 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 57 states. [2018-10-04 09:42:17,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:17,611 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-04 09:42:17,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-04 09:42:17,611 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 112 [2018-10-04 09:42:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:17,612 INFO L225 Difference]: With dead ends: 117 [2018-10-04 09:42:17,612 INFO L226 Difference]: Without dead ends: 115 [2018-10-04 09:42:17,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 12 [2018-10-04 09:42:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-04 09:42:17,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-04 09:42:17,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-04 09:42:17,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-04 09:42:17,615 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 112 [2018-10-04 09:42:17,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:17,616 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-04 09:42:17,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-04 09:42:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-04 09:42:17,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-04 09:42:17,616 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:17,617 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1] [2018-10-04 09:42:17,617 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:17,617 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:17,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1865127485, now seen corresponding path program 55 times [2018-10-04 09:42:17,617 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:17,617 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:17,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:17,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:17,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:17,886 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:18,081 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:18,531 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:18,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:18,984 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:18,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:19,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:19,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:19,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-04 09:42:19,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-04 09:42:19,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-04 09:42:19,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:19,461 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 58 states. [2018-10-04 09:42:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:19,735 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2018-10-04 09:42:19,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-04 09:42:19,735 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 114 [2018-10-04 09:42:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:19,736 INFO L225 Difference]: With dead ends: 119 [2018-10-04 09:42:19,736 INFO L226 Difference]: Without dead ends: 117 [2018-10-04 09:42:19,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 13 [2018-10-04 09:42:19,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-10-04 09:42:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-10-04 09:42:19,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-10-04 09:42:19,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-10-04 09:42:19,739 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 114 [2018-10-04 09:42:19,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:19,740 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-10-04 09:42:19,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-04 09:42:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-10-04 09:42:19,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-04 09:42:19,741 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:19,741 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1] [2018-10-04 09:42:19,741 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:19,741 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:19,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1386202743, now seen corresponding path program 56 times [2018-10-04 09:42:19,741 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:19,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:19,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:19,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:19,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:20,008 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:20,223 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:20,699 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:21,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:21,084 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 [2018-10-04 09:42:21,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:21,181 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:21,182 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:21,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:22,434 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:22,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-04 09:42:22,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-04 09:42:22,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-04 09:42:22,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:22,435 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 59 states. [2018-10-04 09:42:23,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:23,876 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-04 09:42:23,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-04 09:42:23,876 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 116 [2018-10-04 09:42:23,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:23,877 INFO L225 Difference]: With dead ends: 121 [2018-10-04 09:42:23,877 INFO L226 Difference]: Without dead ends: 119 [2018-10-04 09:42:23,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.0s impTime 14 [2018-10-04 09:42:23,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-04 09:42:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-04 09:42:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-04 09:42:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-04 09:42:23,881 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 116 [2018-10-04 09:42:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:23,881 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-04 09:42:23,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-04 09:42:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-04 09:42:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-04 09:42:23,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:23,883 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1] [2018-10-04 09:42:23,883 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:23,883 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:23,883 INFO L82 PathProgramCache]: Analyzing trace with hash 701026353, now seen corresponding path program 57 times [2018-10-04 09:42:23,883 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:23,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:23,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:23,884 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:23,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:24,393 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:24,772 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:25,371 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:25,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:25,507 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:25,514 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:25,648 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-04 09:42:25,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:25,651 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:25,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:25,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-04 09:42:25,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-04 09:42:25,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-04 09:42:25,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:25,895 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 60 states. [2018-10-04 09:42:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:25,982 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-10-04 09:42:25,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-04 09:42:25,983 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 118 [2018-10-04 09:42:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:25,983 INFO L225 Difference]: With dead ends: 123 [2018-10-04 09:42:25,983 INFO L226 Difference]: Without dead ends: 121 [2018-10-04 09:42:25,984 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 15 [2018-10-04 09:42:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-10-04 09:42:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-10-04 09:42:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-10-04 09:42:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-10-04 09:42:25,986 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 118 [2018-10-04 09:42:25,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:25,986 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-10-04 09:42:25,986 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-04 09:42:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-10-04 09:42:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-04 09:42:25,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:25,987 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1] [2018-10-04 09:42:25,987 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:25,987 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:25,987 INFO L82 PathProgramCache]: Analyzing trace with hash -623488149, now seen corresponding path program 58 times [2018-10-04 09:42:25,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:25,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:25,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:25,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:25,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:26,289 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:26,608 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:27,115 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:27,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:27,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:27,523 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:27,612 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:27,613 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:27,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:27,841 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:27,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-04 09:42:27,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-04 09:42:27,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-04 09:42:27,843 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:27,843 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 61 states. [2018-10-04 09:42:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:27,963 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-04 09:42:27,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-04 09:42:27,964 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 120 [2018-10-04 09:42:27,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:27,964 INFO L225 Difference]: With dead ends: 125 [2018-10-04 09:42:27,964 INFO L226 Difference]: Without dead ends: 123 [2018-10-04 09:42:27,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.2s impTime 16 [2018-10-04 09:42:27,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-04 09:42:27,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-04 09:42:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-04 09:42:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-04 09:42:27,968 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 120 [2018-10-04 09:42:27,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:27,968 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-04 09:42:27,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-04 09:42:27,968 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-04 09:42:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-04 09:42:27,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:27,969 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1] [2018-10-04 09:42:27,969 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:27,969 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2123362341, now seen corresponding path program 59 times [2018-10-04 09:42:27,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:27,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:27,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:27,970 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:27,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:28,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:28,516 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:29,314 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:29,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:29,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:29,820 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:29,960 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-04 09:42:29,960 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:29,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:30,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:30,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-04 09:42:30,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-04 09:42:30,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-04 09:42:30,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:30,303 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 62 states. [2018-10-04 09:42:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:30,426 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-10-04 09:42:30,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-04 09:42:30,426 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 122 [2018-10-04 09:42:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:30,427 INFO L225 Difference]: With dead ends: 127 [2018-10-04 09:42:30,427 INFO L226 Difference]: Without dead ends: 125 [2018-10-04 09:42:30,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 17 [2018-10-04 09:42:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-10-04 09:42:30,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2018-10-04 09:42:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-04 09:42:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 125 transitions. [2018-10-04 09:42:30,431 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 125 transitions. Word has length 122 [2018-10-04 09:42:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:30,431 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 125 transitions. [2018-10-04 09:42:30,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-04 09:42:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 125 transitions. [2018-10-04 09:42:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-04 09:42:30,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:30,432 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1] [2018-10-04 09:42:30,433 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:30,433 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash 441796191, now seen corresponding path program 60 times [2018-10-04 09:42:30,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:30,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:30,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:30,434 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:30,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:30,804 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:31,197 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:31,808 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:32,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:32,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:32,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:32,384 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:32,530 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-04 09:42:32,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:32,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:32,849 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:32,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-04 09:42:32,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-04 09:42:32,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-04 09:42:32,850 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:32,850 INFO L87 Difference]: Start difference. First operand 125 states and 125 transitions. Second operand 63 states. [2018-10-04 09:42:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:33,013 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-04 09:42:33,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-04 09:42:33,013 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 124 [2018-10-04 09:42:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:33,014 INFO L225 Difference]: With dead ends: 129 [2018-10-04 09:42:33,014 INFO L226 Difference]: Without dead ends: 127 [2018-10-04 09:42:33,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 18 [2018-10-04 09:42:33,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-04 09:42:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-04 09:42:33,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-04 09:42:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-04 09:42:33,017 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 124 [2018-10-04 09:42:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:33,017 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-04 09:42:33,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-04 09:42:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-04 09:42:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-04 09:42:33,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:33,018 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1] [2018-10-04 09:42:33,018 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:33,018 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash -635570663, now seen corresponding path program 61 times [2018-10-04 09:42:33,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:33,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:33,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:33,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:33,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:33,293 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:33,462 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:33,851 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:34,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:34,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:34,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:34,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:34,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:34,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-04 09:42:34,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-04 09:42:34,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-04 09:42:34,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:34,778 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 64 states. [2018-10-04 09:42:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:34,879 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2018-10-04 09:42:34,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-04 09:42:34,880 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 126 [2018-10-04 09:42:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:34,880 INFO L225 Difference]: With dead ends: 131 [2018-10-04 09:42:34,880 INFO L226 Difference]: Without dead ends: 129 [2018-10-04 09:42:34,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 19 [2018-10-04 09:42:34,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-04 09:42:34,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-10-04 09:42:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-04 09:42:34,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-10-04 09:42:34,883 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 126 [2018-10-04 09:42:34,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:34,883 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-10-04 09:42:34,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-04 09:42:34,883 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-10-04 09:42:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-04 09:42:34,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:34,884 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1] [2018-10-04 09:42:34,884 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:34,884 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:34,884 INFO L82 PathProgramCache]: Analyzing trace with hash -897999021, now seen corresponding path program 62 times [2018-10-04 09:42:34,884 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:34,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:34,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:34,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:34,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:35,566 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:35,870 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:36,073 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:36,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:36,395 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 [2018-10-04 09:42:36,404 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:36,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:36,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:36,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:36,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:36,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-04 09:42:36,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-04 09:42:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-04 09:42:36,751 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:36,751 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 65 states. [2018-10-04 09:42:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:36,867 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-04 09:42:36,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-04 09:42:36,868 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 128 [2018-10-04 09:42:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:36,869 INFO L225 Difference]: With dead ends: 133 [2018-10-04 09:42:36,869 INFO L226 Difference]: Without dead ends: 131 [2018-10-04 09:42:36,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 20 [2018-10-04 09:42:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-04 09:42:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-04 09:42:36,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-04 09:42:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-04 09:42:36,873 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 128 [2018-10-04 09:42:36,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:36,873 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-04 09:42:36,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-04 09:42:36,874 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-04 09:42:36,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-04 09:42:36,874 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:36,874 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1] [2018-10-04 09:42:36,874 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:36,874 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:36,875 INFO L82 PathProgramCache]: Analyzing trace with hash 311419405, now seen corresponding path program 63 times [2018-10-04 09:42:36,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:36,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:36,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:36,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:36,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:37,152 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:37,357 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:37,672 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:38,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:38,122 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:38,132 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:38,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-04 09:42:38,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:38,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:38,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:38,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:38,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-04 09:42:38,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-04 09:42:38,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-04 09:42:38,548 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:38,548 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 66 states. [2018-10-04 09:42:38,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:38,683 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-10-04 09:42:38,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-04 09:42:38,684 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 130 [2018-10-04 09:42:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:38,685 INFO L225 Difference]: With dead ends: 135 [2018-10-04 09:42:38,685 INFO L226 Difference]: Without dead ends: 133 [2018-10-04 09:42:38,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 21 [2018-10-04 09:42:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-10-04 09:42:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2018-10-04 09:42:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-10-04 09:42:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-10-04 09:42:38,688 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 130 [2018-10-04 09:42:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:38,689 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-10-04 09:42:38,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-04 09:42:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-10-04 09:42:38,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-04 09:42:38,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:38,690 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1] [2018-10-04 09:42:38,690 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:38,690 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:38,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1373610425, now seen corresponding path program 64 times [2018-10-04 09:42:38,690 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:38,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:38,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:38,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:38,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:39,158 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:39,624 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:40,241 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:41,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:41,014 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 [2018-10-04 09:42:41,023 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:41,123 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:41,124 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:41,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:41,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:41,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-04 09:42:41,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-04 09:42:41,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-04 09:42:41,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:41,450 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 67 states. [2018-10-04 09:42:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:41,596 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-04 09:42:41,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-04 09:42:41,596 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 132 [2018-10-04 09:42:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:41,597 INFO L225 Difference]: With dead ends: 137 [2018-10-04 09:42:41,597 INFO L226 Difference]: Without dead ends: 135 [2018-10-04 09:42:41,598 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 22 [2018-10-04 09:42:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-04 09:42:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-04 09:42:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-04 09:42:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-04 09:42:41,601 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 132 [2018-10-04 09:42:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:41,601 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-04 09:42:41,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-04 09:42:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-04 09:42:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-04 09:42:41,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:41,602 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1] [2018-10-04 09:42:41,602 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:41,602 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:41,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1484606463, now seen corresponding path program 65 times [2018-10-04 09:42:41,603 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:41,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:41,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:41,603 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:41,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:41,888 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:42,091 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:42,490 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:43,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:43,316 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 [2018-10-04 09:42:43,323 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:42:43,481 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-04 09:42:43,482 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:43,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:43,734 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:43,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-04 09:42:43,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-04 09:42:43,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-04 09:42:43,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:43,735 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 68 states. [2018-10-04 09:42:43,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:43,886 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-10-04 09:42:43,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-04 09:42:43,886 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 134 [2018-10-04 09:42:43,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:43,887 INFO L225 Difference]: With dead ends: 139 [2018-10-04 09:42:43,887 INFO L226 Difference]: Without dead ends: 137 [2018-10-04 09:42:43,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 23 [2018-10-04 09:42:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-10-04 09:42:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-10-04 09:42:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-10-04 09:42:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2018-10-04 09:42:43,890 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 134 [2018-10-04 09:42:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:43,890 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2018-10-04 09:42:43,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-04 09:42:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2018-10-04 09:42:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-04 09:42:43,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:43,891 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1] [2018-10-04 09:42:43,891 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:43,891 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:43,891 INFO L82 PathProgramCache]: Analyzing trace with hash -777616581, now seen corresponding path program 66 times [2018-10-04 09:42:43,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:43,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:43,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:43,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:43,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:44,410 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:44,616 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:44,929 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:45,482 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:45,482 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 [2018-10-04 09:42:45,488 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:42:45,652 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-04 09:42:45,652 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:45,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:45,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:45,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-04 09:42:45,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-04 09:42:45,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-04 09:42:45,953 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:45,953 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand 69 states. [2018-10-04 09:42:46,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:46,074 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-04 09:42:46,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-04 09:42:46,075 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 136 [2018-10-04 09:42:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:46,075 INFO L225 Difference]: With dead ends: 141 [2018-10-04 09:42:46,075 INFO L226 Difference]: Without dead ends: 139 [2018-10-04 09:42:46,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 24 [2018-10-04 09:42:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-04 09:42:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-04 09:42:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-04 09:42:46,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-04 09:42:46,079 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 136 [2018-10-04 09:42:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:46,079 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-04 09:42:46,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-04 09:42:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-04 09:42:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-04 09:42:46,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:46,080 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1] [2018-10-04 09:42:46,080 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:46,080 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:46,081 INFO L82 PathProgramCache]: Analyzing trace with hash 34827253, now seen corresponding path program 67 times [2018-10-04 09:42:46,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:46,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:46,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:46,081 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:46,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:46,392 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:46,706 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:47,204 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:48,201 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:42:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:48,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:48,219 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:48,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:48,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:48,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:48,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:48,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-04 09:42:48,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-04 09:42:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-04 09:42:48,582 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:48,582 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 70 states. [2018-10-04 09:42:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:48,759 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions. [2018-10-04 09:42:48,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-04 09:42:48,760 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 138 [2018-10-04 09:42:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:48,760 INFO L225 Difference]: With dead ends: 143 [2018-10-04 09:42:48,760 INFO L226 Difference]: Without dead ends: 141 [2018-10-04 09:42:48,761 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.7s impTime 8 [2018-10-04 09:42:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-10-04 09:42:48,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-10-04 09:42:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-04 09:42:48,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-10-04 09:42:48,764 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 138 [2018-10-04 09:42:48,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:48,764 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-10-04 09:42:48,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-04 09:42:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-10-04 09:42:48,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-04 09:42:48,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:48,765 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1] [2018-10-04 09:42:48,765 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:48,765 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:48,765 INFO L82 PathProgramCache]: Analyzing trace with hash -890696145, now seen corresponding path program 68 times [2018-10-04 09:42:48,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:48,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:48,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:48,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:42:48,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:49,124 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:49,815 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:50,153 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:51,120 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:42:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:51,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:51,195 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:51,202 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:42:51,305 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:42:51,305 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:51,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:51,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:51,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-04 09:42:51,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-04 09:42:51,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-04 09:42:51,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:51,569 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 71 states. [2018-10-04 09:42:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:51,736 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-04 09:42:51,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-04 09:42:51,736 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 140 [2018-10-04 09:42:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:51,737 INFO L225 Difference]: With dead ends: 145 [2018-10-04 09:42:51,737 INFO L226 Difference]: Without dead ends: 143 [2018-10-04 09:42:51,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 9 [2018-10-04 09:42:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-04 09:42:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-04 09:42:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-04 09:42:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-04 09:42:51,742 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 140 [2018-10-04 09:42:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:51,743 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-04 09:42:51,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-04 09:42:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-04 09:42:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-04 09:42:51,744 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:51,744 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1] [2018-10-04 09:42:51,744 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:51,744 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:51,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1260451351, now seen corresponding path program 69 times [2018-10-04 09:42:51,744 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:51,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:51,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:51,745 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:51,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:52,030 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:52,400 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:52,995 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:53,940 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:42:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:54,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:54,083 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:42:54,090 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:42:54,272 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-04 09:42:54,272 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:54,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:54,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:54,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:54,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-04 09:42:54,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-04 09:42:54,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-04 09:42:54,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:54,858 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 72 states. [2018-10-04 09:42:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:55,050 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-10-04 09:42:55,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-04 09:42:55,051 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 142 [2018-10-04 09:42:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:55,052 INFO L225 Difference]: With dead ends: 147 [2018-10-04 09:42:55,052 INFO L226 Difference]: Without dead ends: 145 [2018-10-04 09:42:55,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.0s impTime 10 [2018-10-04 09:42:55,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-10-04 09:42:55,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2018-10-04 09:42:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-10-04 09:42:55,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-10-04 09:42:55,056 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 142 [2018-10-04 09:42:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:55,056 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-10-04 09:42:55,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-04 09:42:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-10-04 09:42:55,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-04 09:42:55,057 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:55,057 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1] [2018-10-04 09:42:55,057 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:55,057 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash -112918749, now seen corresponding path program 70 times [2018-10-04 09:42:55,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:55,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:55,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:55,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:55,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:55,316 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:55,697 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:56,295 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:57,299 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:42:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:57,515 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:42:57,516 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 [2018-10-04 09:42:57,524 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:42:57,634 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:42:57,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:42:57,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:42:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:42:57,888 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:42:57,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-04 09:42:57,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-04 09:42:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-04 09:42:57,889 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:42:57,889 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 73 states. [2018-10-04 09:42:58,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:42:58,067 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-04 09:42:58,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-04 09:42:58,067 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 144 [2018-10-04 09:42:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:42:58,068 INFO L225 Difference]: With dead ends: 149 [2018-10-04 09:42:58,068 INFO L226 Difference]: Without dead ends: 147 [2018-10-04 09:42:58,069 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 11 [2018-10-04 09:42:58,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-04 09:42:58,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-04 09:42:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-04 09:42:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-04 09:42:58,072 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 144 [2018-10-04 09:42:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:42:58,072 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-04 09:42:58,072 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-04 09:42:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-04 09:42:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-04 09:42:58,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:42:58,073 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1] [2018-10-04 09:42:58,074 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:42:58,074 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:42:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1140683299, now seen corresponding path program 71 times [2018-10-04 09:42:58,074 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:42:58,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:42:58,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:58,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:42:58,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:42:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:42:58,461 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:42:58,653 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:42:59,004 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:00,165 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:00,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:00,437 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 [2018-10-04 09:43:00,444 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:43:00,640 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-04 09:43:00,641 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:00,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:00,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:00,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-04 09:43:00,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-04 09:43:00,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-04 09:43:00,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:00,933 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 74 states. [2018-10-04 09:43:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:01,127 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-10-04 09:43:01,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-04 09:43:01,128 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 146 [2018-10-04 09:43:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:01,129 INFO L225 Difference]: With dead ends: 151 [2018-10-04 09:43:01,129 INFO L226 Difference]: Without dead ends: 149 [2018-10-04 09:43:01,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 12 [2018-10-04 09:43:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-10-04 09:43:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2018-10-04 09:43:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-10-04 09:43:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2018-10-04 09:43:01,133 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 146 [2018-10-04 09:43:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:01,133 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2018-10-04 09:43:01,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-04 09:43:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2018-10-04 09:43:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-04 09:43:01,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:01,134 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1] [2018-10-04 09:43:01,134 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:01,134 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:01,135 INFO L82 PathProgramCache]: Analyzing trace with hash -979937769, now seen corresponding path program 72 times [2018-10-04 09:43:01,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:01,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:01,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:01,135 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:01,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:01,528 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:01,899 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:02,374 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:02,631 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:02,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:02,774 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 [2018-10-04 09:43:02,781 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:02,963 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-04 09:43:02,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:02,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:03,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:03,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-04 09:43:03,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-04 09:43:03,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-04 09:43:03,280 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:03,280 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 75 states. [2018-10-04 09:43:03,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:03,391 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-04 09:43:03,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-04 09:43:03,391 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 148 [2018-10-04 09:43:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:03,393 INFO L225 Difference]: With dead ends: 153 [2018-10-04 09:43:03,393 INFO L226 Difference]: Without dead ends: 151 [2018-10-04 09:43:03,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 13 [2018-10-04 09:43:03,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-04 09:43:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-04 09:43:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-04 09:43:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-04 09:43:03,397 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 148 [2018-10-04 09:43:03,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:03,397 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-04 09:43:03,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-04 09:43:03,397 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-04 09:43:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-04 09:43:03,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:03,398 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1] [2018-10-04 09:43:03,399 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:03,399 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:03,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1122306095, now seen corresponding path program 73 times [2018-10-04 09:43:03,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:03,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:03,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:03,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:03,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:03,739 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:04,111 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:04,985 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:05,926 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:06,315 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:06,315 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 [2018-10-04 09:43:06,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:06,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:06,704 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:06,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-04 09:43:06,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-04 09:43:06,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-04 09:43:06,705 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:06,705 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 76 states. [2018-10-04 09:43:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:06,924 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions. [2018-10-04 09:43:06,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-04 09:43:06,924 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 150 [2018-10-04 09:43:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:06,925 INFO L225 Difference]: With dead ends: 155 [2018-10-04 09:43:06,925 INFO L226 Difference]: Without dead ends: 153 [2018-10-04 09:43:06,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.5s impTime 14 [2018-10-04 09:43:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-10-04 09:43:06,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-10-04 09:43:06,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-04 09:43:06,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-10-04 09:43:06,929 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 150 [2018-10-04 09:43:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:06,929 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-10-04 09:43:06,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-04 09:43:06,930 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-10-04 09:43:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-04 09:43:06,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:06,930 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1] [2018-10-04 09:43:06,931 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:06,931 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:06,931 INFO L82 PathProgramCache]: Analyzing trace with hash -499313909, now seen corresponding path program 74 times [2018-10-04 09:43:06,931 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:06,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:06,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:06,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:06,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:07,165 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:07,562 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:07,799 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:08,195 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:08,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:08,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:08,429 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 [2018-10-04 09:43:08,437 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:43:08,554 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:43:08,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:08,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:08,856 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:08,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-04 09:43:08,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-04 09:43:08,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-04 09:43:08,858 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:08,858 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 77 states. [2018-10-04 09:43:09,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:09,009 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-04 09:43:09,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-04 09:43:09,010 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 152 [2018-10-04 09:43:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:09,011 INFO L225 Difference]: With dead ends: 157 [2018-10-04 09:43:09,011 INFO L226 Difference]: Without dead ends: 155 [2018-10-04 09:43:09,011 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 15 [2018-10-04 09:43:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-04 09:43:09,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-04 09:43:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-04 09:43:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-04 09:43:09,014 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 152 [2018-10-04 09:43:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:09,014 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-04 09:43:09,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-04 09:43:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-04 09:43:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-04 09:43:09,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:09,015 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1] [2018-10-04 09:43:09,015 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:09,015 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:09,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1195722693, now seen corresponding path program 75 times [2018-10-04 09:43:09,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:09,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:09,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:09,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:09,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:09,249 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:09,572 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:10,350 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:11,351 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:11,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:11,632 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 [2018-10-04 09:43:11,640 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:43:11,842 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-04 09:43:11,842 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:11,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:12,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:12,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:12,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-04 09:43:12,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-04 09:43:12,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-04 09:43:12,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:12,116 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 78 states. [2018-10-04 09:43:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:12,277 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-10-04 09:43:12,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-04 09:43:12,277 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 154 [2018-10-04 09:43:12,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:12,278 INFO L225 Difference]: With dead ends: 159 [2018-10-04 09:43:12,278 INFO L226 Difference]: Without dead ends: 157 [2018-10-04 09:43:12,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 16 [2018-10-04 09:43:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-10-04 09:43:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2018-10-04 09:43:12,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-10-04 09:43:12,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-10-04 09:43:12,282 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 154 [2018-10-04 09:43:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:12,282 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-10-04 09:43:12,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-04 09:43:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-10-04 09:43:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-04 09:43:12,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:12,283 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1] [2018-10-04 09:43:12,283 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:12,284 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:12,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1961675265, now seen corresponding path program 76 times [2018-10-04 09:43:12,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:12,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:12,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:12,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:12,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:12,589 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:12,771 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:13,161 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:14,137 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:14,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:14,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:14,715 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:43:14,833 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:43:14,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:14,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:15,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:15,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-04 09:43:15,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-04 09:43:15,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-04 09:43:15,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:15,262 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 79 states. [2018-10-04 09:43:15,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:15,893 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-04 09:43:15,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-04 09:43:15,893 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 156 [2018-10-04 09:43:15,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:15,894 INFO L225 Difference]: With dead ends: 161 [2018-10-04 09:43:15,895 INFO L226 Difference]: Without dead ends: 159 [2018-10-04 09:43:15,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 17 [2018-10-04 09:43:15,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-04 09:43:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-04 09:43:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-04 09:43:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-04 09:43:15,900 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 156 [2018-10-04 09:43:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:15,901 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-04 09:43:15,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-04 09:43:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-04 09:43:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-04 09:43:15,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:15,902 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1] [2018-10-04 09:43:15,902 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:15,902 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash 320765369, now seen corresponding path program 77 times [2018-10-04 09:43:15,903 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:15,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:15,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:16,305 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:16,480 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:16,893 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:17,914 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:18,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:18,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:18,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:18,599 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:43:18,809 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-04 09:43:18,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:18,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:19,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:19,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-04 09:43:19,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-04 09:43:19,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-04 09:43:19,099 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:19,099 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 80 states. [2018-10-04 09:43:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:19,347 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-10-04 09:43:19,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-04 09:43:19,348 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 158 [2018-10-04 09:43:19,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:19,348 INFO L225 Difference]: With dead ends: 163 [2018-10-04 09:43:19,349 INFO L226 Difference]: Without dead ends: 161 [2018-10-04 09:43:19,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime 18 [2018-10-04 09:43:19,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-10-04 09:43:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-10-04 09:43:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-10-04 09:43:19,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2018-10-04 09:43:19,352 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 158 [2018-10-04 09:43:19,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:19,353 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2018-10-04 09:43:19,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-04 09:43:19,353 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2018-10-04 09:43:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-04 09:43:19,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:19,354 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1] [2018-10-04 09:43:19,354 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:19,354 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:19,354 INFO L82 PathProgramCache]: Analyzing trace with hash -982073613, now seen corresponding path program 78 times [2018-10-04 09:43:19,355 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:19,355 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:19,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:19,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:19,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:19,691 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:20,389 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:21,006 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:21,723 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:21,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:21,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:21,876 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 [2018-10-04 09:43:21,883 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:22,125 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-04 09:43:22,125 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:22,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:22,412 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:22,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-04 09:43:22,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-04 09:43:22,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-04 09:43:22,413 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:22,413 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand 81 states. [2018-10-04 09:43:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:22,603 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-04 09:43:22,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-04 09:43:22,604 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 160 [2018-10-04 09:43:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:22,604 INFO L225 Difference]: With dead ends: 165 [2018-10-04 09:43:22,604 INFO L226 Difference]: Without dead ends: 163 [2018-10-04 09:43:22,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 19 [2018-10-04 09:43:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-04 09:43:22,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-04 09:43:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-04 09:43:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-04 09:43:22,608 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 160 [2018-10-04 09:43:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:22,609 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-04 09:43:22,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-04 09:43:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-04 09:43:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-04 09:43:22,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:22,610 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1] [2018-10-04 09:43:22,610 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:22,610 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:22,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1120115117, now seen corresponding path program 79 times [2018-10-04 09:43:22,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:22,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:22,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:22,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:22,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:22,916 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:23,140 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:23,438 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:24,071 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:24,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:24,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:24,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:24,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:25,185 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:25,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-04 09:43:25,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-04 09:43:25,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-04 09:43:25,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:25,187 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 82 states. [2018-10-04 09:43:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:25,421 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions. [2018-10-04 09:43:25,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-04 09:43:25,421 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 162 [2018-10-04 09:43:25,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:25,422 INFO L225 Difference]: With dead ends: 167 [2018-10-04 09:43:25,422 INFO L226 Difference]: Without dead ends: 165 [2018-10-04 09:43:25,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 20 [2018-10-04 09:43:25,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-04 09:43:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-10-04 09:43:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-10-04 09:43:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-10-04 09:43:25,426 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 162 [2018-10-04 09:43:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:25,426 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-10-04 09:43:25,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-04 09:43:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-10-04 09:43:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-04 09:43:25,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:25,428 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1] [2018-10-04 09:43:25,428 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:25,428 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:25,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1606111769, now seen corresponding path program 80 times [2018-10-04 09:43:25,428 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:25,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:25,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:25,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:25,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:25,778 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:26,104 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:26,408 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:27,408 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:28,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:28,255 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 [2018-10-04 09:43:28,262 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:43:28,383 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:43:28,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:28,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:28,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:28,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-04 09:43:28,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-04 09:43:28,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-04 09:43:28,679 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:28,679 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 83 states. [2018-10-04 09:43:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:28,928 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-04 09:43:28,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-04 09:43:28,929 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 164 [2018-10-04 09:43:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:28,929 INFO L225 Difference]: With dead ends: 169 [2018-10-04 09:43:28,930 INFO L226 Difference]: Without dead ends: 167 [2018-10-04 09:43:28,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 21 [2018-10-04 09:43:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-04 09:43:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-04 09:43:28,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-04 09:43:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-04 09:43:28,933 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 164 [2018-10-04 09:43:28,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:28,933 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-04 09:43:28,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-04 09:43:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-04 09:43:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-04 09:43:28,933 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:28,934 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1] [2018-10-04 09:43:28,934 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:28,934 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:28,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1580098655, now seen corresponding path program 81 times [2018-10-04 09:43:28,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:28,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:28,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:28,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:28,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:29,243 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:29,406 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:29,742 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:31,022 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:31,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:31,869 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:31,876 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:43:32,100 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-04 09:43:32,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:32,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:32,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:32,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-04 09:43:32,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-04 09:43:32,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-04 09:43:32,390 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:32,390 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 84 states. [2018-10-04 09:43:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:32,602 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-10-04 09:43:32,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-04 09:43:32,602 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 166 [2018-10-04 09:43:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:32,603 INFO L225 Difference]: With dead ends: 171 [2018-10-04 09:43:32,603 INFO L226 Difference]: Without dead ends: 169 [2018-10-04 09:43:32,604 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime 22 [2018-10-04 09:43:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-10-04 09:43:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2018-10-04 09:43:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-10-04 09:43:32,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-10-04 09:43:32,606 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 166 [2018-10-04 09:43:32,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:32,607 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-10-04 09:43:32,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-04 09:43:32,607 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-10-04 09:43:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-04 09:43:32,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:32,608 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1] [2018-10-04 09:43:32,608 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:32,608 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1943667419, now seen corresponding path program 82 times [2018-10-04 09:43:32,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:32,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:32,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:32,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:32,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:32,977 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:33,388 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:34,005 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:34,396 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:34,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:34,734 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 [2018-10-04 09:43:34,743 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:43:34,876 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:43:34,876 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:34,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:35,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:35,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-04 09:43:35,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-04 09:43:35,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-04 09:43:35,279 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:35,279 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 85 states. [2018-10-04 09:43:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:35,498 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-04 09:43:35,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-04 09:43:35,498 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 168 [2018-10-04 09:43:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:35,499 INFO L225 Difference]: With dead ends: 173 [2018-10-04 09:43:35,499 INFO L226 Difference]: Without dead ends: 171 [2018-10-04 09:43:35,499 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime 23 [2018-10-04 09:43:35,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-04 09:43:35,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-04 09:43:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-04 09:43:35,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-04 09:43:35,503 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 168 [2018-10-04 09:43:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:35,503 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-04 09:43:35,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-04 09:43:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-04 09:43:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-04 09:43:35,504 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:35,504 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1] [2018-10-04 09:43:35,504 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:35,504 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:35,504 INFO L82 PathProgramCache]: Analyzing trace with hash -446332011, now seen corresponding path program 83 times [2018-10-04 09:43:35,504 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:35,504 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:35,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:35,505 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:35,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:35,797 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:36,120 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:36,659 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:37,666 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:38,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:38,033 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 [2018-10-04 09:43:38,041 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:43:38,268 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-04 09:43:38,268 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:38,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:38,574 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:38,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-04 09:43:38,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-04 09:43:38,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-04 09:43:38,576 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:38,576 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 86 states. [2018-10-04 09:43:38,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:38,797 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-10-04 09:43:38,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-04 09:43:38,797 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 170 [2018-10-04 09:43:38,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:38,798 INFO L225 Difference]: With dead ends: 175 [2018-10-04 09:43:38,798 INFO L226 Difference]: Without dead ends: 173 [2018-10-04 09:43:38,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 24 [2018-10-04 09:43:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-10-04 09:43:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2018-10-04 09:43:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-10-04 09:43:38,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2018-10-04 09:43:38,801 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 170 [2018-10-04 09:43:38,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:38,801 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2018-10-04 09:43:38,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-04 09:43:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2018-10-04 09:43:38,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-04 09:43:38,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:38,802 INFO L375 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1] [2018-10-04 09:43:38,803 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:38,803 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:38,803 INFO L82 PathProgramCache]: Analyzing trace with hash 571719119, now seen corresponding path program 84 times [2018-10-04 09:43:38,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:38,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:38,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:38,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:38,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:39,046 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:39,235 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:39,547 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:40,101 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:40,315 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:40,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:40,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:40,361 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:40,614 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-04 09:43:40,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:40,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:40,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:40,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-04 09:43:40,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-04 09:43:40,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-04 09:43:40,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:40,979 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand 87 states. [2018-10-04 09:43:41,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:41,352 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-04 09:43:41,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-04 09:43:41,352 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 172 [2018-10-04 09:43:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:41,353 INFO L225 Difference]: With dead ends: 177 [2018-10-04 09:43:41,353 INFO L226 Difference]: Without dead ends: 175 [2018-10-04 09:43:41,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 8 [2018-10-04 09:43:41,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-04 09:43:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-04 09:43:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-04 09:43:41,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-04 09:43:41,358 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 172 [2018-10-04 09:43:41,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:41,359 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-04 09:43:41,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-04 09:43:41,359 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-04 09:43:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-04 09:43:41,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:41,360 INFO L375 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1] [2018-10-04 09:43:41,360 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:41,360 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash -333688439, now seen corresponding path program 85 times [2018-10-04 09:43:41,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:41,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:41,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:41,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:41,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:41,626 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:41,842 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:42,175 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:42,349 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:42,624 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:42,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:42,657 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 [2018-10-04 09:43:42,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:42,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:43,113 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:43,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-04 09:43:43,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-04 09:43:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-04 09:43:43,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:43,115 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 88 states. [2018-10-04 09:43:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:43,293 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2018-10-04 09:43:43,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-04 09:43:43,293 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 174 [2018-10-04 09:43:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:43,294 INFO L225 Difference]: With dead ends: 179 [2018-10-04 09:43:43,295 INFO L226 Difference]: Without dead ends: 177 [2018-10-04 09:43:43,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 8 [2018-10-04 09:43:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-10-04 09:43:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-10-04 09:43:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-04 09:43:43,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-10-04 09:43:43,298 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 174 [2018-10-04 09:43:43,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:43,299 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-10-04 09:43:43,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-04 09:43:43,299 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-10-04 09:43:43,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-04 09:43:43,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:43,300 INFO L375 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1] [2018-10-04 09:43:43,300 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:43,300 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:43,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1448009411, now seen corresponding path program 86 times [2018-10-04 09:43:43,300 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:43,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:43,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:43,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:43,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:43,567 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:43,708 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:43,973 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:44,413 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:44,975 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:45,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:45,042 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 [2018-10-04 09:43:45,049 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:43:45,186 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:43:45,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:45,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:45,525 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:45,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-04 09:43:45,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-04 09:43:45,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-04 09:43:45,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:45,527 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 89 states. [2018-10-04 09:43:45,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:45,804 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-04 09:43:45,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-04 09:43:45,804 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 176 [2018-10-04 09:43:45,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:45,805 INFO L225 Difference]: With dead ends: 181 [2018-10-04 09:43:45,805 INFO L226 Difference]: Without dead ends: 179 [2018-10-04 09:43:45,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 9 [2018-10-04 09:43:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-04 09:43:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-04 09:43:45,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-04 09:43:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-04 09:43:45,808 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 176 [2018-10-04 09:43:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:45,809 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-04 09:43:45,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-04 09:43:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-04 09:43:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-04 09:43:45,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:45,809 INFO L375 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1] [2018-10-04 09:43:45,810 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:45,810 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:45,810 INFO L82 PathProgramCache]: Analyzing trace with hash -32307843, now seen corresponding path program 87 times [2018-10-04 09:43:45,810 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:45,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:45,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:45,811 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:45,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:46,112 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:46,245 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:46,466 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:47,015 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:47,678 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:47,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:47,833 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:47,844 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:43:48,104 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-04 09:43:48,104 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:48,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:48,431 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:48,432 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-04 09:43:48,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-04 09:43:48,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-04 09:43:48,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:48,433 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 90 states. [2018-10-04 09:43:48,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:48,724 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-10-04 09:43:48,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-04 09:43:48,725 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 178 [2018-10-04 09:43:48,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:48,726 INFO L225 Difference]: With dead ends: 183 [2018-10-04 09:43:48,726 INFO L226 Difference]: Without dead ends: 181 [2018-10-04 09:43:48,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime 11 [2018-10-04 09:43:48,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-10-04 09:43:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2018-10-04 09:43:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-10-04 09:43:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-10-04 09:43:48,729 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 178 [2018-10-04 09:43:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:48,729 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-10-04 09:43:48,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-04 09:43:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-10-04 09:43:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-04 09:43:48,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:48,730 INFO L375 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1] [2018-10-04 09:43:48,730 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:48,730 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash -983013961, now seen corresponding path program 88 times [2018-10-04 09:43:48,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:48,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:48,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:48,731 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:48,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:49,028 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:49,173 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:49,439 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:49,896 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:50,453 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:50,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:50,591 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:50,597 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:43:50,736 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:43:50,736 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:50,741 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:51,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:51,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:51,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-04 09:43:51,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-04 09:43:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-04 09:43:51,179 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:51,179 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 91 states. [2018-10-04 09:43:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:51,440 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-04 09:43:51,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-04 09:43:51,440 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 180 [2018-10-04 09:43:51,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:51,441 INFO L225 Difference]: With dead ends: 185 [2018-10-04 09:43:51,441 INFO L226 Difference]: Without dead ends: 183 [2018-10-04 09:43:51,441 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 11 [2018-10-04 09:43:51,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-04 09:43:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-04 09:43:51,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-04 09:43:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-04 09:43:51,444 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 180 [2018-10-04 09:43:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:51,445 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-04 09:43:51,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-04 09:43:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-04 09:43:51,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-04 09:43:51,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:51,445 INFO L375 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1] [2018-10-04 09:43:51,446 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:51,446 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:51,446 INFO L82 PathProgramCache]: Analyzing trace with hash 216440689, now seen corresponding path program 89 times [2018-10-04 09:43:51,446 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:51,446 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:51,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:51,447 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:51,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:51,719 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:51,941 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:52,284 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:52,471 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:52,769 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:52,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:52,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:43:52,885 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:43:53,167 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-04 09:43:53,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:53,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:53,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:53,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-04 09:43:53,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-04 09:43:53,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-04 09:43:53,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:53,484 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 92 states. [2018-10-04 09:43:53,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:53,676 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-10-04 09:43:53,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-04 09:43:53,676 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 182 [2018-10-04 09:43:53,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:53,677 INFO L225 Difference]: With dead ends: 187 [2018-10-04 09:43:53,677 INFO L226 Difference]: Without dead ends: 185 [2018-10-04 09:43:53,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.9s impTime 12 [2018-10-04 09:43:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2018-10-04 09:43:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2018-10-04 09:43:53,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-10-04 09:43:53,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2018-10-04 09:43:53,680 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 182 [2018-10-04 09:43:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:53,680 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2018-10-04 09:43:53,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-04 09:43:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2018-10-04 09:43:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-04 09:43:53,681 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:53,681 INFO L375 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1] [2018-10-04 09:43:53,681 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:53,682 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:53,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1841124011, now seen corresponding path program 90 times [2018-10-04 09:43:53,682 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:53,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:53,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:53,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:53,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:53,936 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:54,130 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:54,432 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:54,946 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:55,162 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:55,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:55,255 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 [2018-10-04 09:43:55,263 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:43:55,512 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-04 09:43:55,513 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:43:55,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:55,984 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:55,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-04 09:43:55,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-04 09:43:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-04 09:43:55,985 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:55,985 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 93 states. [2018-10-04 09:43:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:56,218 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-04 09:43:56,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-04 09:43:56,218 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 184 [2018-10-04 09:43:56,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:56,219 INFO L225 Difference]: With dead ends: 189 [2018-10-04 09:43:56,219 INFO L226 Difference]: Without dead ends: 187 [2018-10-04 09:43:56,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.0s impTime 14 [2018-10-04 09:43:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-04 09:43:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-04 09:43:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-04 09:43:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-04 09:43:56,223 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 184 [2018-10-04 09:43:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:56,224 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-04 09:43:56,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-04 09:43:56,224 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-04 09:43:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-04 09:43:56,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:56,225 INFO L375 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1] [2018-10-04 09:43:56,225 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:56,225 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:56,226 INFO L82 PathProgramCache]: Analyzing trace with hash -206299291, now seen corresponding path program 91 times [2018-10-04 09:43:56,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:56,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:56,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:56,226 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:43:56,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:56,494 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:56,686 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:56,988 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:57,535 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:57,796 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:43:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:57,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:43:57,904 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 [2018-10-04 09:43:57,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:58,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:43:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:43:58,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:43:58,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-04 09:43:58,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-04 09:43:58,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-04 09:43:58,403 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:43:58,403 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 94 states. [2018-10-04 09:43:58,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:43:58,677 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2018-10-04 09:43:58,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-04 09:43:58,677 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 186 [2018-10-04 09:43:58,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:43:58,679 INFO L225 Difference]: With dead ends: 191 [2018-10-04 09:43:58,679 INFO L226 Difference]: Without dead ends: 189 [2018-10-04 09:43:58,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 15 [2018-10-04 09:43:58,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-10-04 09:43:58,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-10-04 09:43:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-10-04 09:43:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-10-04 09:43:58,683 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 186 [2018-10-04 09:43:58,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:43:58,683 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-10-04 09:43:58,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-04 09:43:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-10-04 09:43:58,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-04 09:43:58,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:43:58,685 INFO L375 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1] [2018-10-04 09:43:58,685 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:43:58,685 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:43:58,685 INFO L82 PathProgramCache]: Analyzing trace with hash -685070945, now seen corresponding path program 92 times [2018-10-04 09:43:58,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:43:58,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:43:58,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:58,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:43:58,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:43:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:43:59,025 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:43:59,259 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:59,596 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:43:59,842 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:00,092 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:00,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:00,261 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 [2018-10-04 09:44:00,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:00,411 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:00,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:00,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:00,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:00,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-04 09:44:00,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-04 09:44:00,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-04 09:44:00,740 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:00,740 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 95 states. [2018-10-04 09:44:00,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:00,943 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-04 09:44:00,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-04 09:44:00,943 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 188 [2018-10-04 09:44:00,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:00,944 INFO L225 Difference]: With dead ends: 193 [2018-10-04 09:44:00,944 INFO L226 Difference]: Without dead ends: 191 [2018-10-04 09:44:00,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.0s impTime 16 [2018-10-04 09:44:00,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-04 09:44:00,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-04 09:44:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-04 09:44:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-04 09:44:00,948 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 188 [2018-10-04 09:44:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:00,948 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-04 09:44:00,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-04 09:44:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-04 09:44:00,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-04 09:44:00,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:00,949 INFO L375 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1] [2018-10-04 09:44:00,950 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:00,950 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:00,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1223129767, now seen corresponding path program 93 times [2018-10-04 09:44:00,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:00,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:00,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:00,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:00,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:01,280 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:01,389 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:01,621 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:01,992 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:02,520 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:02,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:02,819 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 [2018-10-04 09:44:02,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:03,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-04 09:44:03,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:03,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:03,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:03,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-04 09:44:03,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-04 09:44:03,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-04 09:44:03,437 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:03,438 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 96 states. [2018-10-04 09:44:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:03,746 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-10-04 09:44:03,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-04 09:44:03,747 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 190 [2018-10-04 09:44:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:03,747 INFO L225 Difference]: With dead ends: 195 [2018-10-04 09:44:03,748 INFO L226 Difference]: Without dead ends: 193 [2018-10-04 09:44:03,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 16 [2018-10-04 09:44:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-10-04 09:44:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-10-04 09:44:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-04 09:44:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-10-04 09:44:03,751 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 190 [2018-10-04 09:44:03,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:03,751 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-10-04 09:44:03,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-04 09:44:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-10-04 09:44:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-04 09:44:03,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:03,752 INFO L375 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1] [2018-10-04 09:44:03,752 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:03,752 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1393385107, now seen corresponding path program 94 times [2018-10-04 09:44:03,752 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:03,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:03,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:03,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:04,067 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:04,251 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:04,450 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:05,012 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:05,668 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:06,321 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:06,321 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 [2018-10-04 09:44:06,328 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:06,471 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:06,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:06,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:06,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:06,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-04 09:44:06,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-04 09:44:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-04 09:44:06,847 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:06,847 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 97 states. [2018-10-04 09:44:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:07,132 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-04 09:44:07,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-04 09:44:07,132 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 192 [2018-10-04 09:44:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:07,133 INFO L225 Difference]: With dead ends: 197 [2018-10-04 09:44:07,133 INFO L226 Difference]: Without dead ends: 195 [2018-10-04 09:44:07,133 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.0s impTime 17 [2018-10-04 09:44:07,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-04 09:44:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-04 09:44:07,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-04 09:44:07,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-04 09:44:07,137 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 192 [2018-10-04 09:44:07,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:07,137 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-04 09:44:07,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-04 09:44:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-04 09:44:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-04 09:44:07,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:07,138 INFO L375 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1] [2018-10-04 09:44:07,138 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:07,138 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:07,138 INFO L82 PathProgramCache]: Analyzing trace with hash -986656435, now seen corresponding path program 95 times [2018-10-04 09:44:07,138 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:07,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:07,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:07,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:07,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:07,443 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:07,570 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:07,745 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:08,101 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:08,600 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:08,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:08,985 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:08,993 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:09,281 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-04 09:44:09,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:09,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:09,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:09,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-04 09:44:09,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-04 09:44:09,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-04 09:44:09,636 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:09,636 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 98 states. [2018-10-04 09:44:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:09,935 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-10-04 09:44:09,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-04 09:44:09,935 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 194 [2018-10-04 09:44:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:09,936 INFO L225 Difference]: With dead ends: 199 [2018-10-04 09:44:09,936 INFO L226 Difference]: Without dead ends: 197 [2018-10-04 09:44:09,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime 19 [2018-10-04 09:44:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-10-04 09:44:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2018-10-04 09:44:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-10-04 09:44:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2018-10-04 09:44:09,941 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 194 [2018-10-04 09:44:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:09,941 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2018-10-04 09:44:09,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-04 09:44:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2018-10-04 09:44:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-04 09:44:09,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:09,943 INFO L375 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1] [2018-10-04 09:44:09,943 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:09,943 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1010990471, now seen corresponding path program 96 times [2018-10-04 09:44:09,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:09,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:09,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:09,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:09,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:10,327 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:10,580 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:10,954 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:11,605 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:11,832 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:12,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:12,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:12,036 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:12,043 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:12,336 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-04 09:44:12,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:12,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:12,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:12,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-04 09:44:12,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-04 09:44:12,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-04 09:44:12,702 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:12,702 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand 99 states. [2018-10-04 09:44:12,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:12,948 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-04 09:44:12,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-04 09:44:12,949 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 196 [2018-10-04 09:44:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:12,950 INFO L225 Difference]: With dead ends: 201 [2018-10-04 09:44:12,950 INFO L226 Difference]: Without dead ends: 199 [2018-10-04 09:44:12,950 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 19 [2018-10-04 09:44:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-04 09:44:12,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-04 09:44:12,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-04 09:44:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-04 09:44:12,956 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 196 [2018-10-04 09:44:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:12,956 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-04 09:44:12,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-04 09:44:12,956 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-04 09:44:12,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-04 09:44:12,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:12,957 INFO L375 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1] [2018-10-04 09:44:12,957 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:12,957 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:12,958 INFO L82 PathProgramCache]: Analyzing trace with hash 899285825, now seen corresponding path program 97 times [2018-10-04 09:44:12,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:12,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:12,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:12,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:12,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:13,352 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:13,469 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:13,714 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:14,259 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:14,879 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:15,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:15,014 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 [2018-10-04 09:44:15,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:15,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:15,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:15,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-04 09:44:15,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-04 09:44:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-04 09:44:15,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:15,530 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 100 states. [2018-10-04 09:44:15,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:15,816 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2018-10-04 09:44:15,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-04 09:44:15,816 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 198 [2018-10-04 09:44:15,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:15,817 INFO L225 Difference]: With dead ends: 203 [2018-10-04 09:44:15,817 INFO L226 Difference]: Without dead ends: 201 [2018-10-04 09:44:15,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 20 [2018-10-04 09:44:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-10-04 09:44:15,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-10-04 09:44:15,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-10-04 09:44:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-10-04 09:44:15,820 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 198 [2018-10-04 09:44:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:15,821 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-10-04 09:44:15,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-04 09:44:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-10-04 09:44:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-04 09:44:15,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:15,822 INFO L375 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1] [2018-10-04 09:44:15,822 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:15,822 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:15,822 INFO L82 PathProgramCache]: Analyzing trace with hash 925303419, now seen corresponding path program 98 times [2018-10-04 09:44:15,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:15,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:15,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:15,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:15,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:16,133 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:16,379 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:16,680 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:17,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:17,839 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:18,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:18,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:18,050 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:18,203 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:18,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:18,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:18,562 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:18,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-04 09:44:18,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-04 09:44:18,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-04 09:44:18,564 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:18,564 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 101 states. [2018-10-04 09:44:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:18,846 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-04 09:44:18,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-04 09:44:18,846 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 200 [2018-10-04 09:44:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:18,847 INFO L225 Difference]: With dead ends: 205 [2018-10-04 09:44:18,847 INFO L226 Difference]: Without dead ends: 203 [2018-10-04 09:44:18,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 22 [2018-10-04 09:44:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-04 09:44:18,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-04 09:44:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-04 09:44:18,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-04 09:44:18,851 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 200 [2018-10-04 09:44:18,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:18,851 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-04 09:44:18,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-04 09:44:18,851 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-04 09:44:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-04 09:44:18,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:18,852 INFO L375 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1] [2018-10-04 09:44:18,852 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:18,852 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:18,852 INFO L82 PathProgramCache]: Analyzing trace with hash 158407477, now seen corresponding path program 99 times [2018-10-04 09:44:18,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:18,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:18,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:18,853 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:18,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:19,142 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:19,320 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:19,598 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:20,109 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:20,349 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:20,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:20,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:20,575 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 [2018-10-04 09:44:20,582 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:20,894 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-04 09:44:20,894 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:20,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:21,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:21,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-04 09:44:21,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-04 09:44:21,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-04 09:44:21,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:21,263 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 102 states. [2018-10-04 09:44:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:21,520 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2018-10-04 09:44:21,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-04 09:44:21,520 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 202 [2018-10-04 09:44:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:21,521 INFO L225 Difference]: With dead ends: 207 [2018-10-04 09:44:21,521 INFO L226 Difference]: Without dead ends: 205 [2018-10-04 09:44:21,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 23 [2018-10-04 09:44:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2018-10-04 09:44:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2018-10-04 09:44:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-10-04 09:44:21,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 205 transitions. [2018-10-04 09:44:21,525 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 205 transitions. Word has length 202 [2018-10-04 09:44:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:21,525 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 205 transitions. [2018-10-04 09:44:21,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-04 09:44:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 205 transitions. [2018-10-04 09:44:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-04 09:44:21,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:21,526 INFO L375 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1] [2018-10-04 09:44:21,526 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:21,526 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:21,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1905782127, now seen corresponding path program 100 times [2018-10-04 09:44:21,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:21,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:21,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:21,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:21,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:21,834 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:22,072 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:22,232 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:22,477 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:22,852 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:23,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:23,316 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 [2018-10-04 09:44:23,323 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:23,507 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:23,508 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:23,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:23,874 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:23,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-04 09:44:23,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-04 09:44:23,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-04 09:44:23,875 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:23,875 INFO L87 Difference]: Start difference. First operand 205 states and 205 transitions. Second operand 103 states. [2018-10-04 09:44:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:24,183 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-04 09:44:24,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-04 09:44:24,183 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 204 [2018-10-04 09:44:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:24,184 INFO L225 Difference]: With dead ends: 209 [2018-10-04 09:44:24,185 INFO L226 Difference]: Without dead ends: 207 [2018-10-04 09:44:24,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 24 [2018-10-04 09:44:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-04 09:44:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-04 09:44:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-04 09:44:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-04 09:44:24,189 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 204 [2018-10-04 09:44:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:24,189 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-04 09:44:24,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-04 09:44:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-04 09:44:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-04 09:44:24,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:24,191 INFO L375 BasicCegarLoop]: trace histogram [102, 101, 1, 1, 1] [2018-10-04 09:44:24,191 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:24,191 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:24,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1800608041, now seen corresponding path program 101 times [2018-10-04 09:44:24,192 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:24,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:24,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:24,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:24,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:24,545 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:24,768 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:25,115 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:25,663 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:26,366 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:27,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:27,330 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 [2018-10-04 09:44:27,337 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:27,803 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-04 09:44:27,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:27,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10302 backedges. 0 proven. 10302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:28,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:28,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-04 09:44:28,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-04 09:44:28,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-04 09:44:28,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:28,308 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 104 states. [2018-10-04 09:44:28,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:28,700 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-10-04 09:44:28,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-04 09:44:28,700 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 206 [2018-10-04 09:44:28,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:28,701 INFO L225 Difference]: With dead ends: 211 [2018-10-04 09:44:28,701 INFO L226 Difference]: Without dead ends: 209 [2018-10-04 09:44:28,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.4s impTime 24 [2018-10-04 09:44:28,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-04 09:44:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2018-10-04 09:44:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-04 09:44:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2018-10-04 09:44:28,705 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 206 [2018-10-04 09:44:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:28,705 INFO L480 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2018-10-04 09:44:28,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-04 09:44:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2018-10-04 09:44:28,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-04 09:44:28,706 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:28,706 INFO L375 BasicCegarLoop]: trace histogram [103, 102, 1, 1, 1] [2018-10-04 09:44:28,706 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:28,706 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:28,706 INFO L82 PathProgramCache]: Analyzing trace with hash -487440797, now seen corresponding path program 102 times [2018-10-04 09:44:28,706 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:28,706 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:28,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:28,707 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:28,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:29,082 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:29,313 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:29,597 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:29,777 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:30,091 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:30,706 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:30,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:30,754 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 [2018-10-04 09:44:30,761 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:31,074 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-04 09:44:31,074 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:31,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10506 backedges. 0 proven. 10506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:31,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:31,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-04 09:44:31,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-04 09:44:31,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-04 09:44:31,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:31,471 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand 105 states. [2018-10-04 09:44:31,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:31,777 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-04 09:44:31,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-04 09:44:31,777 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 208 [2018-10-04 09:44:31,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:31,778 INFO L225 Difference]: With dead ends: 213 [2018-10-04 09:44:31,778 INFO L226 Difference]: Without dead ends: 211 [2018-10-04 09:44:31,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.3s impTime 8 [2018-10-04 09:44:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-04 09:44:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-04 09:44:31,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-04 09:44:31,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-04 09:44:31,782 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 208 [2018-10-04 09:44:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:31,782 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-04 09:44:31,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-04 09:44:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-04 09:44:31,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-04 09:44:31,783 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:31,783 INFO L375 BasicCegarLoop]: trace histogram [104, 103, 1, 1, 1] [2018-10-04 09:44:31,784 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:31,784 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash -279118563, now seen corresponding path program 103 times [2018-10-04 09:44:31,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:31,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:31,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:31,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:31,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:32,113 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:32,249 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:32,454 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:32,980 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:33,642 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:33,908 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:33,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:33,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:33,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:34,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10712 backedges. 0 proven. 10712 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:34,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:34,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-04 09:44:34,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-04 09:44:34,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-04 09:44:34,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:34,593 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 106 states. [2018-10-04 09:44:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:34,917 INFO L93 Difference]: Finished difference Result 215 states and 215 transitions. [2018-10-04 09:44:34,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-04 09:44:34,917 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 210 [2018-10-04 09:44:34,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:34,918 INFO L225 Difference]: With dead ends: 215 [2018-10-04 09:44:34,918 INFO L226 Difference]: Without dead ends: 213 [2018-10-04 09:44:34,918 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.5s impTime 10 [2018-10-04 09:44:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-10-04 09:44:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-10-04 09:44:34,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-04 09:44:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-10-04 09:44:34,923 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 210 [2018-10-04 09:44:34,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:34,923 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-10-04 09:44:34,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-04 09:44:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-10-04 09:44:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-04 09:44:34,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:34,924 INFO L375 BasicCegarLoop]: trace histogram [105, 104, 1, 1, 1] [2018-10-04 09:44:34,925 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:34,925 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1944914601, now seen corresponding path program 104 times [2018-10-04 09:44:34,925 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:34,925 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:34,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:34,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:34,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:35,268 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:35,495 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:35,860 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:36,420 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:37,341 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:38,136 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:38,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:38,280 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 [2018-10-04 09:44:38,288 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:44:38,453 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:44:38,453 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:38,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10920 backedges. 0 proven. 10920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:38,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:38,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-04 09:44:38,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-04 09:44:38,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-04 09:44:38,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:38,912 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 107 states. [2018-10-04 09:44:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:39,334 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-04 09:44:39,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-04 09:44:39,335 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 212 [2018-10-04 09:44:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:39,335 INFO L225 Difference]: With dead ends: 217 [2018-10-04 09:44:39,335 INFO L226 Difference]: Without dead ends: 215 [2018-10-04 09:44:39,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2s Time 2.6s impTime 10 [2018-10-04 09:44:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-04 09:44:39,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-04 09:44:39,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-04 09:44:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-04 09:44:39,340 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 212 [2018-10-04 09:44:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:39,341 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-04 09:44:39,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-04 09:44:39,341 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-04 09:44:39,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-04 09:44:39,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:39,342 INFO L375 BasicCegarLoop]: trace histogram [106, 105, 1, 1, 1] [2018-10-04 09:44:39,342 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:39,342 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:39,342 INFO L82 PathProgramCache]: Analyzing trace with hash -752105711, now seen corresponding path program 105 times [2018-10-04 09:44:39,342 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:39,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:39,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:39,343 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:39,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:39,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:39,675 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:39,881 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:40,199 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:40,709 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:41,382 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:42,437 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:42,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:42,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-04 09:44:42,658 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:44:42,985 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-04 09:44:42,985 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:42,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 11130 backedges. 0 proven. 11130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:43,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:43,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-04 09:44:43,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-04 09:44:43,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-04 09:44:43,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:43,363 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 108 states. [2018-10-04 09:44:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:43,804 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2018-10-04 09:44:43,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-04 09:44:43,804 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 214 [2018-10-04 09:44:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:43,805 INFO L225 Difference]: With dead ends: 219 [2018-10-04 09:44:43,805 INFO L226 Difference]: Without dead ends: 217 [2018-10-04 09:44:43,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 11 [2018-10-04 09:44:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-10-04 09:44:43,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2018-10-04 09:44:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-04 09:44:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2018-10-04 09:44:43,809 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 214 [2018-10-04 09:44:43,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:43,809 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2018-10-04 09:44:43,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-04 09:44:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2018-10-04 09:44:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-04 09:44:43,810 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:43,810 INFO L375 BasicCegarLoop]: trace histogram [107, 106, 1, 1, 1] [2018-10-04 09:44:43,811 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:43,811 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1219030453, now seen corresponding path program 106 times [2018-10-04 09:44:43,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:43,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:43,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:43,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:44,137 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:44,367 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:44,574 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:45,111 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:45,743 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:46,514 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:46,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:46,792 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 [2018-10-04 09:44:46,799 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:44:46,965 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:44:46,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:46,972 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11342 backedges. 0 proven. 11342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:47,495 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:47,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-04 09:44:47,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-04 09:44:47,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-04 09:44:47,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:47,497 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand 109 states. [2018-10-04 09:44:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:47,976 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-04 09:44:47,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-04 09:44:47,976 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 216 [2018-10-04 09:44:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:47,977 INFO L225 Difference]: With dead ends: 221 [2018-10-04 09:44:47,977 INFO L226 Difference]: Without dead ends: 219 [2018-10-04 09:44:47,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.3s impTime 13 [2018-10-04 09:44:47,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-04 09:44:47,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-04 09:44:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-04 09:44:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-04 09:44:47,980 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 216 [2018-10-04 09:44:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:47,980 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-04 09:44:47,980 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-04 09:44:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-04 09:44:47,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-04 09:44:47,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:47,981 INFO L375 BasicCegarLoop]: trace histogram [108, 107, 1, 1, 1] [2018-10-04 09:44:47,981 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:47,981 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:47,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1037858565, now seen corresponding path program 107 times [2018-10-04 09:44:47,982 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:47,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:47,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:48,310 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:48,502 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:48,805 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:49,390 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:49,644 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:49,912 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:50,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:50,067 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 [2018-10-04 09:44:50,075 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:44:50,429 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-04 09:44:50,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:50,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:50,811 INFO L134 CoverageAnalysis]: Checked inductivity of 11556 backedges. 0 proven. 11556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:50,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:50,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-04 09:44:50,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-04 09:44:50,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-04 09:44:50,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:50,833 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 110 states. [2018-10-04 09:44:51,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:51,173 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-10-04 09:44:51,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-04 09:44:51,173 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 218 [2018-10-04 09:44:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:51,174 INFO L225 Difference]: With dead ends: 223 [2018-10-04 09:44:51,174 INFO L226 Difference]: Without dead ends: 221 [2018-10-04 09:44:51,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.4s impTime 14 [2018-10-04 09:44:51,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-10-04 09:44:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2018-10-04 09:44:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-10-04 09:44:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2018-10-04 09:44:51,179 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 218 [2018-10-04 09:44:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:51,179 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2018-10-04 09:44:51,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-04 09:44:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2018-10-04 09:44:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-04 09:44:51,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:51,180 INFO L375 BasicCegarLoop]: trace histogram [109, 108, 1, 1, 1] [2018-10-04 09:44:51,180 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:51,180 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:51,181 INFO L82 PathProgramCache]: Analyzing trace with hash 949720383, now seen corresponding path program 108 times [2018-10-04 09:44:51,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:51,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:51,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:51,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:51,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:51,569 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:51,699 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:51,894 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:52,541 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:53,035 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:53,758 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:54,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:54,150 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 [2018-10-04 09:44:54,157 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:44:54,518 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-04 09:44:54,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:44:54,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 11772 backedges. 0 proven. 11772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:54,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:54,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-04 09:44:54,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-04 09:44:54,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-04 09:44:54,928 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:54,928 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 111 states. [2018-10-04 09:44:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:55,372 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-04 09:44:55,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-04 09:44:55,372 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 220 [2018-10-04 09:44:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:55,372 INFO L225 Difference]: With dead ends: 225 [2018-10-04 09:44:55,373 INFO L226 Difference]: Without dead ends: 223 [2018-10-04 09:44:55,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime 15 [2018-10-04 09:44:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-04 09:44:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-04 09:44:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-04 09:44:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-04 09:44:55,376 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 220 [2018-10-04 09:44:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:55,376 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-04 09:44:55,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-04 09:44:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-04 09:44:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-04 09:44:55,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:55,377 INFO L375 BasicCegarLoop]: trace histogram [110, 109, 1, 1, 1] [2018-10-04 09:44:55,377 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:55,377 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:55,377 INFO L82 PathProgramCache]: Analyzing trace with hash -2146693895, now seen corresponding path program 109 times [2018-10-04 09:44:55,377 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:55,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:55,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:55,378 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:44:55,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:55,706 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:55,820 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:56,055 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:44:56,582 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:57,272 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:57,875 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:44:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:58,247 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:44:58,247 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 [2018-10-04 09:44:58,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:58,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:44:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11990 backedges. 0 proven. 11990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:44:58,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:44:58,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-04 09:44:58,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-04 09:44:58,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-04 09:44:58,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:44:58,819 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 112 states. [2018-10-04 09:44:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:44:59,261 INFO L93 Difference]: Finished difference Result 227 states and 227 transitions. [2018-10-04 09:44:59,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-04 09:44:59,262 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 222 [2018-10-04 09:44:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:44:59,262 INFO L225 Difference]: With dead ends: 227 [2018-10-04 09:44:59,262 INFO L226 Difference]: Without dead ends: 225 [2018-10-04 09:44:59,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 15 [2018-10-04 09:44:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-04 09:44:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-10-04 09:44:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-04 09:44:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-10-04 09:44:59,266 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 222 [2018-10-04 09:44:59,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:44:59,266 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-10-04 09:44:59,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-04 09:44:59,266 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-10-04 09:44:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-04 09:44:59,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:44:59,267 INFO L375 BasicCegarLoop]: trace histogram [111, 110, 1, 1, 1] [2018-10-04 09:44:59,267 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:44:59,267 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:44:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1388478925, now seen corresponding path program 110 times [2018-10-04 09:44:59,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:44:59,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:44:59,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:59,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:44:59,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:44:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:44:59,641 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:44:59,906 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:45:00,272 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:45:00,823 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:01,452 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:02,208 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:02,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:45:02,874 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 [2018-10-04 09:45:02,883 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:45:03,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:45:03,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:03,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12210 backedges. 0 proven. 12210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:03,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:45:03,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-04 09:45:03,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-04 09:45:03,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-04 09:45:03,472 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:03,472 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 113 states. [2018-10-04 09:45:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:04,014 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-04 09:45:04,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-04 09:45:04,014 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 224 [2018-10-04 09:45:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:04,014 INFO L225 Difference]: With dead ends: 229 [2018-10-04 09:45:04,015 INFO L226 Difference]: Without dead ends: 227 [2018-10-04 09:45:04,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 2.9s impTime 16 [2018-10-04 09:45:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-04 09:45:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-04 09:45:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-04 09:45:04,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-04 09:45:04,019 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 224 [2018-10-04 09:45:04,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:04,019 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-04 09:45:04,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-04 09:45:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-04 09:45:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-04 09:45:04,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:04,021 INFO L375 BasicCegarLoop]: trace histogram [112, 111, 1, 1, 1] [2018-10-04 09:45:04,021 INFO L423 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:04,021 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1406634221, now seen corresponding path program 111 times [2018-10-04 09:45:04,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:04,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:04,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:04,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:04,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:45:04,407 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 [2018-10-04 09:45:04,540 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:45:04,729 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 22 new depth: 7 [2018-10-04 09:45:05,091 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:05,616 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:06,241 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 25 new depth: 8 [2018-10-04 09:45:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:06,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:45:06,689 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 [2018-10-04 09:45:06,696 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:45:07,087 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-04 09:45:07,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:45:07,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:45:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12432 backedges. 0 proven. 12432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:45:07,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:45:07,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-04 09:45:07,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-04 09:45:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-04 09:45:07,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 09:45:07,615 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 114 states. [2018-10-04 09:45:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:45:08,083 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2018-10-04 09:45:08,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-04 09:45:08,083 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 226 [2018-10-04 09:45:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:45:08,084 INFO L225 Difference]: With dead ends: 231 [2018-10-04 09:45:08,084 INFO L226 Difference]: Without dead ends: 229 [2018-10-04 09:45:08,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 1.8s impTime 18 [2018-10-04 09:45:08,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-10-04 09:45:08,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2018-10-04 09:45:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-10-04 09:45:08,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2018-10-04 09:45:08,087 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 226 [2018-10-04 09:45:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:45:08,087 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2018-10-04 09:45:08,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-04 09:45:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2018-10-04 09:45:08,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-04 09:45:08,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:45:08,088 INFO L375 BasicCegarLoop]: trace histogram [113, 112, 1, 1, 1] [2018-10-04 09:45:08,088 INFO L423 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:45:08,089 INFO L104 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 09:45:08,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1139159769, now seen corresponding path program 112 times [2018-10-04 09:45:08,089 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:45:08,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:45:08,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:08,090 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:45:08,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:45:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:45:08,498 INFO L248 BPredicateUnifier]: --------PredicateTrie is restructured: old depths: 19 new depth: 6 Received shutdown request... [2018-10-04 09:45:08,659 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-04 09:45:08,664 WARN L205 ceAbstractionStarter]: Timeout [2018-10-04 09:45:08,664 INFO L202 PluginConnector]: Adding new model count_by_nondet.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:45:08 BoogieIcfgContainer [2018-10-04 09:45:08,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:45:08,665 INFO L168 Benchmark]: Toolchain (without parser) took 233979.52 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 240.1 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 240.0 MB). Peak memory consumption was 480.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:45:08,667 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:45:08,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:45:08,668 INFO L168 Benchmark]: Boogie Preprocessor took 21.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:45:08,668 INFO L168 Benchmark]: RCFGBuilder took 302.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 09:45:08,669 INFO L168 Benchmark]: TraceAbstraction took 233610.27 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 240.1 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 218.9 MB). Peak memory consumption was 459.0 MB. Max. memory is 7.1 GB. [2018-10-04 09:45:08,672 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 39.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 302.10 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233610.27 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 240.1 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 218.9 MB). Peak memory consumption was 459.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 42). Cancelled while BasicCegarLoop was analyzing trace of length 229 with TraceHistMax 113, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 227 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 233.5s OverallTime, 113 OverallIterations, 113 TraceHistogramMax, 21.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 448 SDtfs, 0 SDslu, 9708 SDs, 0 SdLazy, 9820 SolverSat, 206 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19205 GetRequests, 12877 SyntacticMatches, 0 SemanticMatches, 6328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 165.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=229occurred in iteration=112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 112 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.8s SsaConstructionTime, 18.2s SatisfiabilityAnalysisTime, 184.6s InterpolantComputationTime, 25756 NumberOfCodeBlocks, 25756 NumberOfCodeBlocksAsserted, 3377 NumberOfCheckSat, 25533 ConstructedInterpolants, 0 QuantifiedInterpolants, 11491851 SizeOfPredicates, 332 NumberOfNonLiveVariables, 76257 ConjunctsInSsa, 6989 ConjunctsInUnsatCore, 223 InterpolantComputations, 1 PerfectInterpolantSequences, 0/936544 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-45-08-682.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_nondet.i_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-45-08-682.csv Completed graceful shutdown