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/20170319-ConjunctivePathPrograms/count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2eb0a67 [2018-10-03 09:03:38,421 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-03 09:03:38,423 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-03 09:03:38,435 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-03 09:03:38,435 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-03 09:03:38,436 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-03 09:03:38,439 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-03 09:03:38,442 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-03 09:03:38,444 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-03 09:03:38,445 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-03 09:03:38,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-03 09:03:38,491 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-03 09:03:38,517 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-03 09:03:38,517 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-03 09:03:38,518 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-03 09:03:38,518 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-03 09:03:38,521 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-03 09:03:38,522 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-03 09:03:38,522 INFO L133 SettingsManager]: * Use SBE=true [2018-10-03 09:03:38,522 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-03 09:03:38,522 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-03 09:03:38,522 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-03 09:03:38,523 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-03 09:03:38,523 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-03 09:03:38,523 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-03 09:03:38,523 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-03 09:03:38,524 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-03 09:03:38,524 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-03 09:03:38,525 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-03 09:03:38,525 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-03 09:03:38,525 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-03 09:03:38,525 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-03 09:03:38,525 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-03 09:03:38,526 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-03 09:03:38,526 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:03:38,526 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-03 09:03:38,526 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-03 09:03:38,526 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-03 09:03:38,528 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-03 09:03:38,528 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-03 09:03:38,528 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-03 09:03:38,528 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-03 09:03:38,528 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-03 09:03:38,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-03 09:03:38,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-03 09:03:38,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-03 09:03:38,606 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-03 09:03:38,607 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-03 09:03:38,608 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-03 09:03:38,608 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl' [2018-10-03 09:03:38,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-03 09:03:38,668 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-03 09:03:38,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-03 09:03:38,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-03 09:03:38,670 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-03 09:03:38,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-03 09:03:38,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-03 09:03:38,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-03 09:03:38,713 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-03 09:03:38,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... [2018-10-03 09:03:38,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-03 09:03:38,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-03 09:03:38,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-03 09:03:38,735 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-03 09:03:38,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-03 09:03:38,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-03 09:03:38,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-03 09:03:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-03 09:03:39,008 INFO L340 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-03 09:03:39,009 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:03:39 BoogieIcfgContainer [2018-10-03 09:03:39,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-03 09:03:39,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-03 09:03:39,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-03 09:03:39,017 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-03 09:03:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:03:38" (1/2) ... [2018-10-03 09:03:39,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cb4a4f5 and model type count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:03:39, skipping insertion in model container [2018-10-03 09:03:39,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:03:39" (2/2) ... [2018-10-03 09:03:39,020 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl [2018-10-03 09:03:39,031 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-03 09:03:39,039 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-03 09:03:39,087 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-03 09:03:39,088 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-03 09:03:39,088 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-03 09:03:39,089 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-03 09:03:39,089 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-03 09:03:39,089 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-03 09:03:39,089 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-03 09:03:39,089 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-03 09:03:39,090 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-03 09:03:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-03 09:03:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-03 09:03:39,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:39,124 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-03 09:03:39,126 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:39,132 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 30017, now seen corresponding path program 1 times [2018-10-03 09:03:39,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:39,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:39,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:39,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:39,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:39,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-03 09:03:39,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-03 09:03:39,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-03 09:03:39,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-03 09:03:39,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:39,307 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-03 09:03:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:39,342 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-03 09:03:39,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-03 09:03:39,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-03 09:03:39,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:39,356 INFO L225 Difference]: With dead ends: 9 [2018-10-03 09:03:39,356 INFO L226 Difference]: Without dead ends: 5 [2018-10-03 09:03:39,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-03 09:03:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-03 09:03:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-03 09:03:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-03 09:03:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-03 09:03:39,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-03 09:03:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:39,395 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-03 09:03:39,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-03 09:03:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-03 09:03:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-03 09:03:39,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:39,396 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-03 09:03:39,396 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:39,396 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:39,396 INFO L82 PathProgramCache]: Analyzing trace with hash 928552, now seen corresponding path program 1 times [2018-10-03 09:03:39,397 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:39,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:39,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:39,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:39,508 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:39,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:39,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:39,674 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:39,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-03 09:03:39,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-03 09:03:39,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-03 09:03:39,675 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:39,675 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-03 09:03:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:39,722 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-03 09:03:39,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-03 09:03:39,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-03 09:03:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:39,723 INFO L225 Difference]: With dead ends: 8 [2018-10-03 09:03:39,723 INFO L226 Difference]: Without dead ends: 6 [2018-10-03 09:03:39,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2 [2018-10-03 09:03:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-03 09:03:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-03 09:03:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-03 09:03:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-03 09:03:39,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-03 09:03:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:39,727 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-03 09:03:39,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-03 09:03:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-03 09:03:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-03 09:03:39,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:39,728 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-03 09:03:39,728 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:39,729 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash 28783137, now seen corresponding path program 2 times [2018-10-03 09:03:39,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:39,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:39,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:39,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:39,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:39,818 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:39,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:39,852 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:39,853 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:39,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:39,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:39,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:39,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-03 09:03:39,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-03 09:03:39,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-03 09:03:39,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:39,905 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-03 09:03:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:39,934 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-03 09:03:39,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-03 09:03:39,935 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-03 09:03:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:39,935 INFO L225 Difference]: With dead ends: 9 [2018-10-03 09:03:39,935 INFO L226 Difference]: Without dead ends: 7 [2018-10-03 09:03:39,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3 [2018-10-03 09:03:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-03 09:03:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-03 09:03:39,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-03 09:03:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-03 09:03:39,939 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-03 09:03:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:39,939 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-03 09:03:39,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-03 09:03:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-03 09:03:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-03 09:03:39,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:39,940 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-03 09:03:39,941 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:39,941 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash 892275272, now seen corresponding path program 3 times [2018-10-03 09:03:39,941 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:39,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:39,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:39,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:40,035 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:40,050 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:40,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-03 09:03:40,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:40,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:40,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-03 09:03:40,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-03 09:03:40,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-03 09:03:40,125 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:40,125 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-03 09:03:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:40,195 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-03 09:03:40,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-03 09:03:40,198 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-03 09:03:40,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:40,199 INFO L225 Difference]: With dead ends: 10 [2018-10-03 09:03:40,199 INFO L226 Difference]: Without dead ends: 8 [2018-10-03 09:03:40,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4 [2018-10-03 09:03:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-03 09:03:40,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-03 09:03:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-03 09:03:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-03 09:03:40,203 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-03 09:03:40,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:40,203 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-03 09:03:40,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-03 09:03:40,204 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-03 09:03:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-03 09:03:40,204 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:40,204 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-03 09:03:40,205 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:40,205 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:40,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1890727681, now seen corresponding path program 4 times [2018-10-03 09:03:40,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:40,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:40,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:40,206 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:40,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:40,479 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:40,486 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:40,522 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:40,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:40,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:40,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-03 09:03:40,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-03 09:03:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-03 09:03:40,593 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:40,594 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-03 09:03:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:40,635 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-03 09:03:40,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-03 09:03:40,637 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-03 09:03:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:40,637 INFO L225 Difference]: With dead ends: 11 [2018-10-03 09:03:40,637 INFO L226 Difference]: Without dead ends: 9 [2018-10-03 09:03:40,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 5 [2018-10-03 09:03:40,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-03 09:03:40,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-03 09:03:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-03 09:03:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-03 09:03:40,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-03 09:03:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:40,641 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-03 09:03:40,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-03 09:03:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-03 09:03:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-03 09:03:40,642 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:40,642 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-03 09:03:40,643 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:40,643 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1516986008, now seen corresponding path program 5 times [2018-10-03 09:03:40,643 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:40,644 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:40,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:40,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:40,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:40,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:40,817 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:40,829 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-03 09:03:40,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:40,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:40,860 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:40,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:40,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-03 09:03:40,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-03 09:03:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-03 09:03:40,881 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:40,881 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-03 09:03:40,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:40,997 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-03 09:03:40,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-03 09:03:40,998 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-03 09:03:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:40,998 INFO L225 Difference]: With dead ends: 12 [2018-10-03 09:03:40,998 INFO L226 Difference]: Without dead ends: 10 [2018-10-03 09:03:40,999 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6 [2018-10-03 09:03:40,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-03 09:03:41,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-03 09:03:41,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-03 09:03:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-03 09:03:41,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-03 09:03:41,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:41,002 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-03 09:03:41,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-03 09:03:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-03 09:03:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-03 09:03:41,003 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:41,003 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-03 09:03:41,004 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:41,004 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:41,004 INFO L82 PathProgramCache]: Analyzing trace with hash 218072033, now seen corresponding path program 6 times [2018-10-03 09:03:41,004 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:41,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:41,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:41,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:41,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:41,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:41,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:41,151 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:41,159 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-03 09:03:41,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:41,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:41,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:41,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-03 09:03:41,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-03 09:03:41,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-03 09:03:41,259 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:41,259 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-03 09:03:41,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:41,296 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-03 09:03:41,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-03 09:03:41,297 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-03 09:03:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:41,298 INFO L225 Difference]: With dead ends: 13 [2018-10-03 09:03:41,298 INFO L226 Difference]: Without dead ends: 11 [2018-10-03 09:03:41,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7 [2018-10-03 09:03:41,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-03 09:03:41,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-03 09:03:41,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-03 09:03:41,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-03 09:03:41,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-03 09:03:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:41,303 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-03 09:03:41,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-03 09:03:41,303 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-03 09:03:41,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-03 09:03:41,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:41,304 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-03 09:03:41,304 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:41,305 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:41,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1829703544, now seen corresponding path program 7 times [2018-10-03 09:03:41,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:41,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:41,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:41,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:41,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:41,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:41,827 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:41,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:41,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:41,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:41,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-03 09:03:41,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-03 09:03:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-03 09:03:41,925 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:41,925 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-03 09:03:42,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:42,025 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-03 09:03:42,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-03 09:03:42,026 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-03 09:03:42,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:42,026 INFO L225 Difference]: With dead ends: 14 [2018-10-03 09:03:42,026 INFO L226 Difference]: Without dead ends: 12 [2018-10-03 09:03:42,027 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 8 [2018-10-03 09:03:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-03 09:03:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-03 09:03:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-03 09:03:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-03 09:03:42,031 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-03 09:03:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:42,031 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-03 09:03:42,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-03 09:03:42,031 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-03 09:03:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-03 09:03:42,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:42,032 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-03 09:03:42,032 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:42,032 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:42,032 INFO L82 PathProgramCache]: Analyzing trace with hash -886236991, now seen corresponding path program 8 times [2018-10-03 09:03:42,033 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:42,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:42,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:42,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:42,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:42,210 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:42,219 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:42,225 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:42,226 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:42,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:42,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:42,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-03 09:03:42,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-03 09:03:42,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-03 09:03:42,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:42,301 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-03 09:03:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:42,361 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-03 09:03:42,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-03 09:03:42,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-03 09:03:42,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:42,365 INFO L225 Difference]: With dead ends: 15 [2018-10-03 09:03:42,365 INFO L226 Difference]: Without dead ends: 13 [2018-10-03 09:03:42,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9 [2018-10-03 09:03:42,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-03 09:03:42,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-03 09:03:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-03 09:03:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-03 09:03:42,369 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-03 09:03:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:42,369 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-03 09:03:42,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-03 09:03:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-03 09:03:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-03 09:03:42,370 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:42,370 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-03 09:03:42,371 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:42,371 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1703544920, now seen corresponding path program 9 times [2018-10-03 09:03:42,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:42,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:42,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:42,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:42,516 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:42,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:42,517 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:42,527 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:42,558 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-03 09:03:42,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:42,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:42,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:42,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-03 09:03:42,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-03 09:03:42,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-03 09:03:42,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:42,664 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-03 09:03:42,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:42,707 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-03 09:03:42,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-03 09:03:42,707 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-03 09:03:42,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:42,708 INFO L225 Difference]: With dead ends: 16 [2018-10-03 09:03:42,708 INFO L226 Difference]: Without dead ends: 14 [2018-10-03 09:03:42,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 10 [2018-10-03 09:03:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-03 09:03:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-03 09:03:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-03 09:03:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-03 09:03:42,711 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-03 09:03:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:42,712 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-03 09:03:42,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-03 09:03:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-03 09:03:42,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-03 09:03:42,712 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:42,713 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-03 09:03:42,713 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:42,713 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:42,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1270286943, now seen corresponding path program 10 times [2018-10-03 09:03:42,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:42,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:42,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:42,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:42,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:42,851 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:42,861 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:42,878 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:42,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:42,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:43,062 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:43,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:43,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-03 09:03:43,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-03 09:03:43,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-03 09:03:43,096 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:43,097 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-03 09:03:43,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:43,151 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-03 09:03:43,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-03 09:03:43,153 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-03 09:03:43,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:43,154 INFO L225 Difference]: With dead ends: 17 [2018-10-03 09:03:43,155 INFO L226 Difference]: Without dead ends: 15 [2018-10-03 09:03:43,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 11 [2018-10-03 09:03:43,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-03 09:03:43,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-03 09:03:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-03 09:03:43,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-03 09:03:43,159 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-03 09:03:43,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:43,159 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-03 09:03:43,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-03 09:03:43,160 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-03 09:03:43,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-03 09:03:43,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:43,160 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-03 09:03:43,161 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:43,161 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:43,161 INFO L82 PathProgramCache]: Analyzing trace with hash -724191544, now seen corresponding path program 11 times [2018-10-03 09:03:43,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:43,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:43,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:43,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:43,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:43,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:43,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:43,424 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:43,439 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-03 09:03:43,440 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:43,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:43,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:43,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-03 09:03:43,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-03 09:03:43,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-03 09:03:43,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:43,528 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-03 09:03:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:43,582 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-03 09:03:43,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-03 09:03:43,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-03 09:03:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:43,583 INFO L225 Difference]: With dead ends: 18 [2018-10-03 09:03:43,584 INFO L226 Difference]: Without dead ends: 16 [2018-10-03 09:03:43,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 12 [2018-10-03 09:03:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-03 09:03:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-03 09:03:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-03 09:03:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-03 09:03:43,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-03 09:03:43,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:43,587 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-03 09:03:43,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-03 09:03:43,588 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-03 09:03:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-03 09:03:43,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:43,588 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-03 09:03:43,589 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:43,589 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:43,589 INFO L82 PathProgramCache]: Analyzing trace with hash -975103359, now seen corresponding path program 12 times [2018-10-03 09:03:43,589 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:43,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:43,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:43,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:43,762 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:43,762 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:43,771 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:43,789 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-03 09:03:43,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:43,791 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:43,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:43,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-03 09:03:43,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-03 09:03:43,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-03 09:03:43,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:43,862 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-03 09:03:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:43,900 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-03 09:03:43,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-03 09:03:43,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-03 09:03:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:43,902 INFO L225 Difference]: With dead ends: 19 [2018-10-03 09:03:43,902 INFO L226 Difference]: Without dead ends: 17 [2018-10-03 09:03:43,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 13 [2018-10-03 09:03:43,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-03 09:03:43,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-03 09:03:43,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-03 09:03:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-03 09:03:43,907 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-03 09:03:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:43,907 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-03 09:03:43,908 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-03 09:03:43,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-03 09:03:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-03 09:03:43,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:43,909 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-03 09:03:43,909 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:43,909 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash -163435032, now seen corresponding path program 13 times [2018-10-03 09:03:43,909 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:43,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:43,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:43,910 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:43,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:44,150 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:44,151 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:44,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:44,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:44,280 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:44,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-03 09:03:44,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-03 09:03:44,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-03 09:03:44,282 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:44,282 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-03 09:03:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:44,465 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-03 09:03:44,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-03 09:03:44,466 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-03 09:03:44,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:44,466 INFO L225 Difference]: With dead ends: 20 [2018-10-03 09:03:44,466 INFO L226 Difference]: Without dead ends: 18 [2018-10-03 09:03:44,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 14 [2018-10-03 09:03:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-03 09:03:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-03 09:03:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-03 09:03:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-03 09:03:44,470 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-03 09:03:44,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:44,471 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-03 09:03:44,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-03 09:03:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-03 09:03:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-03 09:03:44,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:44,471 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-03 09:03:44,472 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:44,472 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:44,472 INFO L82 PathProgramCache]: Analyzing trace with hash -771520671, now seen corresponding path program 14 times [2018-10-03 09:03:44,472 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:44,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:44,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:44,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:44,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:44,764 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:44,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:44,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:44,773 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:44,784 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:44,785 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:44,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:44,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:44,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-03 09:03:44,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-03 09:03:44,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-03 09:03:44,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:44,879 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-03 09:03:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:44,917 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-03 09:03:44,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-03 09:03:44,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-03 09:03:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:44,919 INFO L225 Difference]: With dead ends: 21 [2018-10-03 09:03:44,919 INFO L226 Difference]: Without dead ends: 19 [2018-10-03 09:03:44,919 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 15 [2018-10-03 09:03:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-03 09:03:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-03 09:03:44,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-03 09:03:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-03 09:03:44,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-03 09:03:44,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:44,926 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-03 09:03:44,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-03 09:03:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-03 09:03:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-03 09:03:44,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:44,927 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-03 09:03:44,927 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:44,927 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:44,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1852661000, now seen corresponding path program 15 times [2018-10-03 09:03:44,927 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:44,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:44,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:44,928 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:44,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:45,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:45,194 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:45,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:45,215 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-03 09:03:45,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:45,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:45,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:45,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-03 09:03:45,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-03 09:03:45,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-03 09:03:45,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:45,349 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-03 09:03:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:45,383 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-03 09:03:45,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-03 09:03:45,383 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-03 09:03:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:45,384 INFO L225 Difference]: With dead ends: 22 [2018-10-03 09:03:45,384 INFO L226 Difference]: Without dead ends: 20 [2018-10-03 09:03:45,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 16 [2018-10-03 09:03:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-03 09:03:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-03 09:03:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-03 09:03:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-03 09:03:45,389 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-03 09:03:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:45,389 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-03 09:03:45,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-03 09:03:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-03 09:03:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-03 09:03:45,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:45,390 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-03 09:03:45,390 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:45,390 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:45,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1597914177, now seen corresponding path program 16 times [2018-10-03 09:03:45,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:45,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:45,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:45,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:45,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:45,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:45,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:45,822 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:45,832 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:45,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:45,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:45,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:45,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-03 09:03:45,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-03 09:03:45,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-03 09:03:45,933 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:45,933 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states. [2018-10-03 09:03:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:46,016 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-03 09:03:46,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-03 09:03:46,018 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-10-03 09:03:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:46,018 INFO L225 Difference]: With dead ends: 23 [2018-10-03 09:03:46,018 INFO L226 Difference]: Without dead ends: 21 [2018-10-03 09:03:46,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 17 [2018-10-03 09:03:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-03 09:03:46,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-03 09:03:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-03 09:03:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-03 09:03:46,023 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-03 09:03:46,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:46,023 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-03 09:03:46,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-03 09:03:46,023 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-03 09:03:46,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-03 09:03:46,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:46,024 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-03 09:03:46,024 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:46,024 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:46,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2004270040, now seen corresponding path program 17 times [2018-10-03 09:03:46,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:46,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:46,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:46,026 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:46,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:46,326 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:46,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:46,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:46,335 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:46,400 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-03 09:03:46,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:46,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:46,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:46,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-03 09:03:46,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-03 09:03:46,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-03 09:03:46,504 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:46,504 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states. [2018-10-03 09:03:46,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:46,548 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-03 09:03:46,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-03 09:03:46,549 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-10-03 09:03:46,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:46,550 INFO L225 Difference]: With dead ends: 24 [2018-10-03 09:03:46,550 INFO L226 Difference]: Without dead ends: 22 [2018-10-03 09:03:46,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 18 [2018-10-03 09:03:46,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-03 09:03:46,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-03 09:03:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-03 09:03:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-03 09:03:46,554 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-03 09:03:46,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:46,555 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-03 09:03:46,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-03 09:03:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-03 09:03:46,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-03 09:03:46,556 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:46,556 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-03 09:03:46,556 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:46,556 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:46,556 INFO L82 PathProgramCache]: Analyzing trace with hash -2002831071, now seen corresponding path program 18 times [2018-10-03 09:03:46,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:46,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:46,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:46,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:46,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:46,985 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:46,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:46,986 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:46,996 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:47,009 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-03 09:03:47,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:47,011 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:47,102 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:47,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-03 09:03:47,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-03 09:03:47,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-03 09:03:47,103 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:47,103 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2018-10-03 09:03:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:47,148 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-03 09:03:47,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-03 09:03:47,149 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-10-03 09:03:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:47,150 INFO L225 Difference]: With dead ends: 25 [2018-10-03 09:03:47,150 INFO L226 Difference]: Without dead ends: 23 [2018-10-03 09:03:47,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 19 [2018-10-03 09:03:47,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-03 09:03:47,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-03 09:03:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-03 09:03:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-03 09:03:47,155 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-03 09:03:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:47,156 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-03 09:03:47,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-03 09:03:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-03 09:03:47,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-03 09:03:47,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:47,157 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-03 09:03:47,157 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:47,157 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1958223032, now seen corresponding path program 19 times [2018-10-03 09:03:47,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:47,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:47,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:47,158 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:47,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:47,631 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:47,631 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:47,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:47,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:47,804 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:47,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-03 09:03:47,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-03 09:03:47,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-03 09:03:47,805 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:47,805 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states. [2018-10-03 09:03:47,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:47,843 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-03 09:03:47,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-03 09:03:47,845 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22 [2018-10-03 09:03:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:47,846 INFO L225 Difference]: With dead ends: 26 [2018-10-03 09:03:47,846 INFO L226 Difference]: Without dead ends: 24 [2018-10-03 09:03:47,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 20 [2018-10-03 09:03:47,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-03 09:03:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-03 09:03:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-03 09:03:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-03 09:03:47,849 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-03 09:03:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:47,849 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-03 09:03:47,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-03 09:03:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-03 09:03:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-03 09:03:47,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:47,850 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-03 09:03:47,850 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:47,850 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:47,851 INFO L82 PathProgramCache]: Analyzing trace with hash -575373823, now seen corresponding path program 20 times [2018-10-03 09:03:47,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:47,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:47,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:47,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:47,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:48,324 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:48,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:48,324 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:48,332 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:48,345 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:48,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:48,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:48,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:48,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-03 09:03:48,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-03 09:03:48,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-03 09:03:48,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:48,412 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states. [2018-10-03 09:03:48,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:48,453 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-03 09:03:48,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-03 09:03:48,453 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23 [2018-10-03 09:03:48,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:48,454 INFO L225 Difference]: With dead ends: 27 [2018-10-03 09:03:48,454 INFO L226 Difference]: Without dead ends: 25 [2018-10-03 09:03:48,455 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 21 [2018-10-03 09:03:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-03 09:03:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-03 09:03:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-03 09:03:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-03 09:03:48,458 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-03 09:03:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:48,458 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-03 09:03:48,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-03 09:03:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-03 09:03:48,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-03 09:03:48,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:48,459 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-03 09:03:48,460 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:48,460 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash -656721304, now seen corresponding path program 21 times [2018-10-03 09:03:48,460 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:48,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:48,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:48,461 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:48,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:49,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:49,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:49,071 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:49,086 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-03 09:03:49,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:49,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:49,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:49,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-03 09:03:49,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-03 09:03:49,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-03 09:03:49,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:49,350 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states. [2018-10-03 09:03:49,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:49,570 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-03 09:03:49,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-03 09:03:49,574 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24 [2018-10-03 09:03:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:49,574 INFO L225 Difference]: With dead ends: 28 [2018-10-03 09:03:49,574 INFO L226 Difference]: Without dead ends: 26 [2018-10-03 09:03:49,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 22 [2018-10-03 09:03:49,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-03 09:03:49,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-03 09:03:49,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-03 09:03:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-03 09:03:49,578 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-03 09:03:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:49,578 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-03 09:03:49,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-03 09:03:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-03 09:03:49,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-03 09:03:49,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:49,579 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-03 09:03:49,579 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:49,579 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:49,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1116474081, now seen corresponding path program 22 times [2018-10-03 09:03:49,579 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:49,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:49,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:49,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:49,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:49,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:49,817 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:49,825 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:49,838 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:49,838 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:49,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:50,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:50,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-03 09:03:50,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-03 09:03:50,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-03 09:03:50,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:50,003 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states. [2018-10-03 09:03:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:50,098 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-03 09:03:50,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-03 09:03:50,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2018-10-03 09:03:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:50,099 INFO L225 Difference]: With dead ends: 29 [2018-10-03 09:03:50,099 INFO L226 Difference]: Without dead ends: 27 [2018-10-03 09:03:50,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 23 [2018-10-03 09:03:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-03 09:03:50,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-03 09:03:50,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-03 09:03:50,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-03 09:03:50,103 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-03 09:03:50,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:50,104 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-03 09:03:50,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-03 09:03:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-03 09:03:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-03 09:03:50,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:50,105 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-03 09:03:50,105 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:50,105 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:50,105 INFO L82 PathProgramCache]: Analyzing trace with hash 250956168, now seen corresponding path program 23 times [2018-10-03 09:03:50,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:50,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:50,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:50,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:50,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:50,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:50,845 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:50,854 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:50,867 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-03 09:03:50,868 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:50,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:50,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:50,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-03 09:03:50,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-03 09:03:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-03 09:03:50,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:50,980 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states. [2018-10-03 09:03:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:51,016 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-03 09:03:51,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-03 09:03:51,016 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26 [2018-10-03 09:03:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:51,017 INFO L225 Difference]: With dead ends: 30 [2018-10-03 09:03:51,017 INFO L226 Difference]: Without dead ends: 28 [2018-10-03 09:03:51,018 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 24 [2018-10-03 09:03:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-03 09:03:51,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-03 09:03:51,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-03 09:03:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-03 09:03:51,023 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-03 09:03:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:51,023 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-03 09:03:51,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-03 09:03:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-03 09:03:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-03 09:03:51,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:51,024 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-03 09:03:51,024 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:51,025 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:51,025 INFO L82 PathProgramCache]: Analyzing trace with hash -810295359, now seen corresponding path program 24 times [2018-10-03 09:03:51,025 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:51,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:51,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:51,026 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:51,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:51,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:51,391 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:51,405 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:51,425 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-03 09:03:51,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:51,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:51,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:51,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-03 09:03:51,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-03 09:03:51,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-03 09:03:51,673 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:51,673 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states. [2018-10-03 09:03:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:51,761 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-03 09:03:51,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-03 09:03:51,761 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27 [2018-10-03 09:03:51,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:51,762 INFO L225 Difference]: With dead ends: 31 [2018-10-03 09:03:51,762 INFO L226 Difference]: Without dead ends: 29 [2018-10-03 09:03:51,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime 25 [2018-10-03 09:03:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-03 09:03:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-03 09:03:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-03 09:03:51,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-03 09:03:51,767 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-03 09:03:51,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:51,767 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-03 09:03:51,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-03 09:03:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-03 09:03:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-03 09:03:51,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:51,768 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-03 09:03:51,769 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:51,769 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash 650645672, now seen corresponding path program 25 times [2018-10-03 09:03:51,769 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:51,769 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:51,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:51,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:51,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:52,483 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:52,484 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:52,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:52,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:52,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:52,570 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:52,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-03 09:03:52,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-03 09:03:52,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-03 09:03:52,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:52,571 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states. [2018-10-03 09:03:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:52,623 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-03 09:03:52,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-03 09:03:52,625 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28 [2018-10-03 09:03:52,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:52,625 INFO L225 Difference]: With dead ends: 32 [2018-10-03 09:03:52,625 INFO L226 Difference]: Without dead ends: 30 [2018-10-03 09:03:52,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 26 [2018-10-03 09:03:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-03 09:03:52,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-03 09:03:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-03 09:03:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-03 09:03:52,630 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-03 09:03:52,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:52,631 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-03 09:03:52,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-03 09:03:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-03 09:03:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-03 09:03:52,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:52,632 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-03 09:03:52,632 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:52,632 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:52,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1304822623, now seen corresponding path program 26 times [2018-10-03 09:03:52,632 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:52,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:52,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:52,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:52,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:52,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:53,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:53,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:53,200 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:53,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:53,214 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:53,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:53,313 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:53,313 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-03 09:03:53,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-03 09:03:53,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-03 09:03:53,314 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:53,314 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states. [2018-10-03 09:03:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:53,401 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-03 09:03:53,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-03 09:03:53,403 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29 [2018-10-03 09:03:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:53,403 INFO L225 Difference]: With dead ends: 33 [2018-10-03 09:03:53,403 INFO L226 Difference]: Without dead ends: 31 [2018-10-03 09:03:53,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 27 [2018-10-03 09:03:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-03 09:03:53,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-03 09:03:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-03 09:03:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-03 09:03:53,407 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-03 09:03:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:53,408 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-03 09:03:53,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-03 09:03:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-03 09:03:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-03 09:03:53,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:53,409 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-03 09:03:53,409 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:53,409 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:53,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1794797624, now seen corresponding path program 27 times [2018-10-03 09:03:53,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:53,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:53,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:53,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:53,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:54,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:54,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:54,185 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:54,233 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-03 09:03:54,234 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:54,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:54,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:54,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-03 09:03:54,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-03 09:03:54,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-03 09:03:54,339 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:54,339 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states. [2018-10-03 09:03:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:54,385 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-03 09:03:54,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-03 09:03:54,386 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30 [2018-10-03 09:03:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:54,387 INFO L225 Difference]: With dead ends: 34 [2018-10-03 09:03:54,387 INFO L226 Difference]: Without dead ends: 32 [2018-10-03 09:03:54,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 28 [2018-10-03 09:03:54,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-03 09:03:54,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-03 09:03:54,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-03 09:03:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-03 09:03:54,392 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-03 09:03:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:54,392 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-03 09:03:54,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-03 09:03:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-03 09:03:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-03 09:03:54,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:54,393 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-03 09:03:54,393 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:54,394 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:54,394 INFO L82 PathProgramCache]: Analyzing trace with hash 195846529, now seen corresponding path program 28 times [2018-10-03 09:03:54,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:54,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:54,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:54,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:54,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:54,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:54,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:54,819 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:54,843 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:54,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:54,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:54,946 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:54,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-03 09:03:54,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-03 09:03:54,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-03 09:03:54,946 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:54,947 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states. [2018-10-03 09:03:54,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:54,995 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-03 09:03:54,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-03 09:03:54,995 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31 [2018-10-03 09:03:54,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:54,996 INFO L225 Difference]: With dead ends: 35 [2018-10-03 09:03:54,996 INFO L226 Difference]: Without dead ends: 33 [2018-10-03 09:03:54,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 29 [2018-10-03 09:03:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-03 09:03:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-03 09:03:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-03 09:03:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-03 09:03:55,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-03 09:03:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:55,001 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-03 09:03:55,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-03 09:03:55,001 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-03 09:03:55,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-03 09:03:55,002 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:55,002 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-03 09:03:55,002 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:55,002 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:55,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1776273128, now seen corresponding path program 29 times [2018-10-03 09:03:55,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:55,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:55,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:55,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:55,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:55,519 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:55,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:55,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:55,527 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:03:55,548 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-03 09:03:55,548 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:55,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:55,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:55,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-03 09:03:55,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-03 09:03:55,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-03 09:03:55,646 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:55,646 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states. [2018-10-03 09:03:55,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:55,687 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-03 09:03:55,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-03 09:03:55,687 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32 [2018-10-03 09:03:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:55,687 INFO L225 Difference]: With dead ends: 36 [2018-10-03 09:03:55,688 INFO L226 Difference]: Without dead ends: 34 [2018-10-03 09:03:55,688 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 30 [2018-10-03 09:03:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-03 09:03:55,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-03 09:03:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-03 09:03:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-03 09:03:55,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-03 09:03:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:55,691 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-03 09:03:55,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-03 09:03:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-03 09:03:55,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-03 09:03:55,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:55,692 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-03 09:03:55,692 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:55,692 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:55,692 INFO L82 PathProgramCache]: Analyzing trace with hash -770109855, now seen corresponding path program 30 times [2018-10-03 09:03:55,692 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:55,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:55,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:55,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:55,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:56,148 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:56,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:56,148 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:56,158 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:03:56,175 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-03 09:03:56,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:56,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:56,312 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:56,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-03 09:03:56,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-03 09:03:56,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-03 09:03:56,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:56,313 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states. [2018-10-03 09:03:56,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:56,349 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-03 09:03:56,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-03 09:03:56,349 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33 [2018-10-03 09:03:56,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:56,350 INFO L225 Difference]: With dead ends: 37 [2018-10-03 09:03:56,350 INFO L226 Difference]: Without dead ends: 35 [2018-10-03 09:03:56,350 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 31 [2018-10-03 09:03:56,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-03 09:03:56,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-03 09:03:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-03 09:03:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-03 09:03:56,354 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-03 09:03:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:56,354 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-03 09:03:56,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-03 09:03:56,354 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-03 09:03:56,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-03 09:03:56,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:56,355 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-03 09:03:56,355 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:56,355 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:56,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1896396296, now seen corresponding path program 31 times [2018-10-03 09:03:56,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:56,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:56,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:56,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:56,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:56,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:56,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:56,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:56,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:56,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:56,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-03 09:03:56,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-03 09:03:56,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-03 09:03:56,898 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:56,898 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states. [2018-10-03 09:03:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:56,955 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-03 09:03:56,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-03 09:03:56,955 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34 [2018-10-03 09:03:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:56,956 INFO L225 Difference]: With dead ends: 38 [2018-10-03 09:03:56,956 INFO L226 Difference]: Without dead ends: 36 [2018-10-03 09:03:56,957 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 32 [2018-10-03 09:03:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-03 09:03:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-03 09:03:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-03 09:03:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-03 09:03:56,961 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-03 09:03:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:56,961 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-03 09:03:56,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-03 09:03:56,961 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-03 09:03:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-03 09:03:56,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:56,962 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-03 09:03:56,962 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:56,963 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:56,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1341258943, now seen corresponding path program 32 times [2018-10-03 09:03:56,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:56,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:56,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:56,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:03:56,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:57,602 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:57,602 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:57,613 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:03:57,628 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:03:57,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:57,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:57,701 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:57,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:57,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-03 09:03:57,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-03 09:03:57,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-03 09:03:57,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:57,722 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states. [2018-10-03 09:03:57,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:57,779 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-03 09:03:57,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-03 09:03:57,780 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35 [2018-10-03 09:03:57,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:57,780 INFO L225 Difference]: With dead ends: 39 [2018-10-03 09:03:57,780 INFO L226 Difference]: Without dead ends: 37 [2018-10-03 09:03:57,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 33 [2018-10-03 09:03:57,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-03 09:03:57,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-03 09:03:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-03 09:03:57,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-03 09:03:57,784 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-03 09:03:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:57,785 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-03 09:03:57,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-03 09:03:57,785 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-03 09:03:57,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-03 09:03:57,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:57,785 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-03 09:03:57,785 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:57,786 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:57,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1370643752, now seen corresponding path program 33 times [2018-10-03 09:03:57,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:57,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:57,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:57,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:57,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:58,438 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:58,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:58,445 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:03:58,475 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-03 09:03:58,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:58,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:58,564 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:58,584 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:58,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-03 09:03:58,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-03 09:03:58,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-03 09:03:58,585 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:58,585 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states. [2018-10-03 09:03:58,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:58,654 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-03 09:03:58,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-03 09:03:58,654 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36 [2018-10-03 09:03:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:58,655 INFO L225 Difference]: With dead ends: 40 [2018-10-03 09:03:58,655 INFO L226 Difference]: Without dead ends: 38 [2018-10-03 09:03:58,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.4s impTime 34 [2018-10-03 09:03:58,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-03 09:03:58,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-03 09:03:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-03 09:03:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-03 09:03:58,658 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-03 09:03:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:58,659 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-03 09:03:58,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-03 09:03:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-03 09:03:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-03 09:03:58,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:58,659 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-03 09:03:58,659 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:58,660 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash -459718623, now seen corresponding path program 34 times [2018-10-03 09:03:58,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:58,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:58,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:58,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:58,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:03:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:59,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:03:59,464 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:03:59,472 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:03:59,488 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:03:59,488 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:03:59,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:03:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:03:59,693 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:03:59,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-03 09:03:59,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-03 09:03:59,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-03 09:03:59,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:03:59,694 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states. [2018-10-03 09:03:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:03:59,757 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-03 09:03:59,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-03 09:03:59,757 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37 [2018-10-03 09:03:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:03:59,758 INFO L225 Difference]: With dead ends: 41 [2018-10-03 09:03:59,758 INFO L226 Difference]: Without dead ends: 39 [2018-10-03 09:03:59,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.6s impTime 35 [2018-10-03 09:03:59,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-03 09:03:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-03 09:03:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-03 09:03:59,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-03 09:03:59,761 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-03 09:03:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:03:59,761 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-03 09:03:59,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-03 09:03:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-03 09:03:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-03 09:03:59,762 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:03:59,762 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-03 09:03:59,762 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:03:59,762 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:03:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1366377400, now seen corresponding path program 35 times [2018-10-03 09:03:59,763 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:03:59,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:03:59,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:59,764 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:03:59,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:03:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:00,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:00,403 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:00,410 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:00,430 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-03 09:04:00,431 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:00,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:00,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:00,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-03 09:04:00,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-03 09:04:00,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-03 09:04:00,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:00,523 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states. [2018-10-03 09:04:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:00,607 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-03 09:04:00,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-03 09:04:00,607 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38 [2018-10-03 09:04:00,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:00,608 INFO L225 Difference]: With dead ends: 42 [2018-10-03 09:04:00,608 INFO L226 Difference]: Without dead ends: 40 [2018-10-03 09:04:00,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.5s impTime 36 [2018-10-03 09:04:00,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-03 09:04:00,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-03 09:04:00,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-03 09:04:00,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-03 09:04:00,610 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-03 09:04:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:00,611 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-03 09:04:00,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-03 09:04:00,611 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-03 09:04:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-03 09:04:00,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:00,611 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-03 09:04:00,612 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:00,612 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:00,612 INFO L82 PathProgramCache]: Analyzing trace with hash 591971585, now seen corresponding path program 36 times [2018-10-03 09:04:00,612 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:00,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:00,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:00,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:00,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:01,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:01,239 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:01,246 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:01,267 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-03 09:04:01,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:01,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:02,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:02,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-03 09:04:02,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-03 09:04:02,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-03 09:04:02,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:02,307 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states. [2018-10-03 09:04:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:02,766 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-03 09:04:02,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-03 09:04:02,768 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39 [2018-10-03 09:04:02,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:02,768 INFO L225 Difference]: With dead ends: 43 [2018-10-03 09:04:02,768 INFO L226 Difference]: Without dead ends: 41 [2018-10-03 09:04:02,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 0.5s impTime 37 [2018-10-03 09:04:02,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-03 09:04:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-03 09:04:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-03 09:04:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-03 09:04:02,771 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-03 09:04:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:02,771 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-03 09:04:02,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-03 09:04:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-03 09:04:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-03 09:04:02,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:02,772 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-03 09:04:02,772 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:02,772 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1171247976, now seen corresponding path program 37 times [2018-10-03 09:04:02,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:02,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:02,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:02,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:02,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:03,565 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:03,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:03,565 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:03,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:03,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:03,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:03,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:03,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-03 09:04:03,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-03 09:04:03,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-03 09:04:03,724 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:03,724 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states. [2018-10-03 09:04:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:03,830 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-03 09:04:03,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-03 09:04:03,831 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40 [2018-10-03 09:04:03,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:03,833 INFO L225 Difference]: With dead ends: 44 [2018-10-03 09:04:03,833 INFO L226 Difference]: Without dead ends: 42 [2018-10-03 09:04:03,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 38 [2018-10-03 09:04:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-03 09:04:03,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-03 09:04:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-03 09:04:03,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-03 09:04:03,835 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-03 09:04:03,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:03,835 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-03 09:04:03,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-03 09:04:03,836 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-03 09:04:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-03 09:04:03,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:03,836 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-03 09:04:03,837 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:03,838 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1948946913, now seen corresponding path program 38 times [2018-10-03 09:04:03,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:03,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:03,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:03,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:03,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:04,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:04,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:04,740 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:04,758 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:04,758 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:04,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:05,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-03 09:04:05,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-03 09:04:05,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-03 09:04:05,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:05,010 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states. [2018-10-03 09:04:05,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:05,075 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-03 09:04:05,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-03 09:04:05,075 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41 [2018-10-03 09:04:05,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:05,076 INFO L225 Difference]: With dead ends: 45 [2018-10-03 09:04:05,076 INFO L226 Difference]: Without dead ends: 43 [2018-10-03 09:04:05,076 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 39 [2018-10-03 09:04:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-03 09:04:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-03 09:04:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-03 09:04:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-03 09:04:05,080 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-03 09:04:05,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:05,080 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-03 09:04:05,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-03 09:04:05,080 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-03 09:04:05,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-03 09:04:05,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:05,081 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-03 09:04:05,081 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:05,081 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash 287810184, now seen corresponding path program 39 times [2018-10-03 09:04:05,081 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:05,082 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:05,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,082 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:05,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:05,543 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:05,550 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:05,574 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-03 09:04:05,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:05,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:05,699 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:05,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:05,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-03 09:04:05,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-03 09:04:05,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-03 09:04:05,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:05,720 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states. [2018-10-03 09:04:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:05,838 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-03 09:04:05,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-03 09:04:05,838 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42 [2018-10-03 09:04:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:05,839 INFO L225 Difference]: With dead ends: 46 [2018-10-03 09:04:05,839 INFO L226 Difference]: Without dead ends: 44 [2018-10-03 09:04:05,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 40 [2018-10-03 09:04:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-03 09:04:05,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-03 09:04:05,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-03 09:04:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-03 09:04:05,842 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-03 09:04:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:05,843 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-03 09:04:05,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-03 09:04:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-03 09:04:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-03 09:04:05,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:05,843 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-03 09:04:05,843 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:05,843 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:05,843 INFO L82 PathProgramCache]: Analyzing trace with hash 332179137, now seen corresponding path program 40 times [2018-10-03 09:04:05,844 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:05,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:05,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,844 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:05,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:07,280 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:07,287 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:07,306 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:07,307 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:07,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:07,410 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:07,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-03 09:04:07,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-03 09:04:07,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-03 09:04:07,411 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:07,411 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states. [2018-10-03 09:04:07,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:07,520 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-03 09:04:07,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-03 09:04:07,521 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43 [2018-10-03 09:04:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:07,522 INFO L225 Difference]: With dead ends: 47 [2018-10-03 09:04:07,522 INFO L226 Difference]: Without dead ends: 45 [2018-10-03 09:04:07,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 41 [2018-10-03 09:04:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-03 09:04:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-03 09:04:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-03 09:04:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-03 09:04:07,525 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-03 09:04:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:07,525 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-03 09:04:07,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-03 09:04:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-03 09:04:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-03 09:04:07,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:07,525 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-03 09:04:07,526 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:07,526 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:07,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1707616680, now seen corresponding path program 41 times [2018-10-03 09:04:07,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:07,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:07,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:07,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:07,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:08,433 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:08,434 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:08,442 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:08,467 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-03 09:04:08,467 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:08,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:08,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:08,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-03 09:04:08,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-03 09:04:08,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-03 09:04:08,576 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:08,576 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states. [2018-10-03 09:04:08,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:08,868 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-03 09:04:08,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-03 09:04:08,868 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44 [2018-10-03 09:04:08,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:08,869 INFO L225 Difference]: With dead ends: 48 [2018-10-03 09:04:08,869 INFO L226 Difference]: Without dead ends: 46 [2018-10-03 09:04:08,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 42 [2018-10-03 09:04:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-03 09:04:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-03 09:04:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-03 09:04:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-03 09:04:08,872 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-03 09:04:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:08,872 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-03 09:04:08,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-03 09:04:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-03 09:04:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-03 09:04:08,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:08,873 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-03 09:04:08,873 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:08,873 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:08,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1396507553, now seen corresponding path program 42 times [2018-10-03 09:04:08,873 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:08,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:09,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:09,940 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:09,948 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:09,973 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-03 09:04:09,974 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:09,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:10,173 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:10,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-03 09:04:10,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-03 09:04:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-03 09:04:10,174 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:10,174 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states. [2018-10-03 09:04:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:10,253 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-03 09:04:10,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-03 09:04:10,254 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45 [2018-10-03 09:04:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:10,255 INFO L225 Difference]: With dead ends: 49 [2018-10-03 09:04:10,255 INFO L226 Difference]: Without dead ends: 47 [2018-10-03 09:04:10,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 43 [2018-10-03 09:04:10,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-03 09:04:10,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-03 09:04:10,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-03 09:04:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-03 09:04:10,258 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-03 09:04:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:10,259 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-03 09:04:10,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-03 09:04:10,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-03 09:04:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-03 09:04:10,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:10,260 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-03 09:04:10,260 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:10,260 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:10,260 INFO L82 PathProgramCache]: Analyzing trace with hash 342059208, now seen corresponding path program 43 times [2018-10-03 09:04:10,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:10,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:10,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:10,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:10,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:11,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:11,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:11,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:11,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:11,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:11,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-03 09:04:11,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-03 09:04:11,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-03 09:04:11,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:11,382 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states. [2018-10-03 09:04:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:11,459 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-03 09:04:11,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-03 09:04:11,460 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46 [2018-10-03 09:04:11,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:11,460 INFO L225 Difference]: With dead ends: 50 [2018-10-03 09:04:11,460 INFO L226 Difference]: Without dead ends: 48 [2018-10-03 09:04:11,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 44 [2018-10-03 09:04:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-03 09:04:11,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-03 09:04:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-03 09:04:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-03 09:04:11,462 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-03 09:04:11,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:11,462 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-03 09:04:11,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-03 09:04:11,462 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-03 09:04:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-03 09:04:11,463 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:11,463 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-03 09:04:11,463 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:11,463 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:11,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2013898881, now seen corresponding path program 44 times [2018-10-03 09:04:11,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:11,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:11,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:11,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:11,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:12,432 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:12,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:12,441 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:12,461 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:12,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:12,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:12,572 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:12,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:12,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-03 09:04:12,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-03 09:04:12,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-03 09:04:12,594 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:12,594 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states. [2018-10-03 09:04:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:12,725 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-03 09:04:12,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-03 09:04:12,726 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47 [2018-10-03 09:04:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:12,726 INFO L225 Difference]: With dead ends: 51 [2018-10-03 09:04:12,727 INFO L226 Difference]: Without dead ends: 49 [2018-10-03 09:04:12,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 45 [2018-10-03 09:04:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-03 09:04:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-03 09:04:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-03 09:04:12,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-03 09:04:12,730 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-03 09:04:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:12,730 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-03 09:04:12,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-03 09:04:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-03 09:04:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-03 09:04:12,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:12,731 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-03 09:04:12,731 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:12,731 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:12,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1993646104, now seen corresponding path program 45 times [2018-10-03 09:04:12,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:12,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:12,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:12,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:12,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:13,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:13,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:13,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:13,416 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-03 09:04:13,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:13,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:13,577 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:13,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-03 09:04:13,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-03 09:04:13,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-03 09:04:13,578 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:13,578 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states. [2018-10-03 09:04:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:14,051 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-03 09:04:14,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-03 09:04:14,052 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48 [2018-10-03 09:04:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:14,052 INFO L225 Difference]: With dead ends: 52 [2018-10-03 09:04:14,053 INFO L226 Difference]: Without dead ends: 50 [2018-10-03 09:04:14,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime 46 [2018-10-03 09:04:14,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-03 09:04:14,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-03 09:04:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-03 09:04:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-03 09:04:14,055 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-03 09:04:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:14,056 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-03 09:04:14,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-03 09:04:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-03 09:04:14,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-03 09:04:14,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:14,056 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-03 09:04:14,057 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:14,057 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:14,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1673489055, now seen corresponding path program 46 times [2018-10-03 09:04:14,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:14,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:14,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:14,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:14,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:15,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:15,327 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:15,335 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:15,356 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:15,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:15,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:15,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:15,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-03 09:04:15,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-03 09:04:15,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-03 09:04:15,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:15,481 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states. [2018-10-03 09:04:15,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:15,569 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-03 09:04:15,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-03 09:04:15,570 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49 [2018-10-03 09:04:15,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:15,570 INFO L225 Difference]: With dead ends: 53 [2018-10-03 09:04:15,570 INFO L226 Difference]: Without dead ends: 51 [2018-10-03 09:04:15,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 47 [2018-10-03 09:04:15,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-03 09:04:15,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-03 09:04:15,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-03 09:04:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-03 09:04:15,572 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-03 09:04:15,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:15,573 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-03 09:04:15,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-03 09:04:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-03 09:04:15,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-03 09:04:15,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:15,573 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-03 09:04:15,574 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:15,574 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:15,574 INFO L82 PathProgramCache]: Analyzing trace with hash -338555128, now seen corresponding path program 47 times [2018-10-03 09:04:15,574 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:15,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:15,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:15,575 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:15,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:16,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:16,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:16,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:16,525 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:16,553 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-03 09:04:16,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:16,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:16,673 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:16,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-03 09:04:16,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-03 09:04:16,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-03 09:04:16,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:16,674 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states. [2018-10-03 09:04:16,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:16,752 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-03 09:04:16,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-03 09:04:16,753 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50 [2018-10-03 09:04:16,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:16,754 INFO L225 Difference]: With dead ends: 54 [2018-10-03 09:04:16,754 INFO L226 Difference]: Without dead ends: 52 [2018-10-03 09:04:16,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime 48 [2018-10-03 09:04:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-03 09:04:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-03 09:04:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-03 09:04:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-03 09:04:16,756 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-03 09:04:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:16,757 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-03 09:04:16,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-03 09:04:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-03 09:04:16,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-03 09:04:16,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:16,757 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-03 09:04:16,758 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:16,758 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:16,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1905276351, now seen corresponding path program 48 times [2018-10-03 09:04:16,758 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:16,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:16,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:16,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:16,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:17,974 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:17,974 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:17,983 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:18,017 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-03 09:04:18,017 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:18,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:18,128 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:18,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-03 09:04:18,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-03 09:04:18,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-03 09:04:18,129 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:18,129 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states. [2018-10-03 09:04:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:18,201 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-03 09:04:18,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-03 09:04:18,202 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 51 [2018-10-03 09:04:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:18,203 INFO L225 Difference]: With dead ends: 55 [2018-10-03 09:04:18,203 INFO L226 Difference]: Without dead ends: 53 [2018-10-03 09:04:18,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 49 [2018-10-03 09:04:18,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-03 09:04:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-03 09:04:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-03 09:04:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-03 09:04:18,207 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-03 09:04:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:18,207 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-03 09:04:18,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-03 09:04:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-03 09:04:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-03 09:04:18,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:18,208 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-03 09:04:18,208 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:18,208 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:18,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1065973288, now seen corresponding path program 49 times [2018-10-03 09:04:18,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:18,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:18,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:18,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:18,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:19,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:19,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:19,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:19,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:19,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:19,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:19,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-03 09:04:19,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-03 09:04:19,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-03 09:04:19,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:19,371 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 52 states. [2018-10-03 09:04:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:19,508 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-03 09:04:19,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-03 09:04:19,509 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 52 [2018-10-03 09:04:19,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:19,509 INFO L225 Difference]: With dead ends: 56 [2018-10-03 09:04:19,509 INFO L226 Difference]: Without dead ends: 54 [2018-10-03 09:04:19,510 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.7s impTime 50 [2018-10-03 09:04:19,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-03 09:04:19,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-03 09:04:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-03 09:04:19,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-03 09:04:19,512 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-03 09:04:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:19,512 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-03 09:04:19,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-03 09:04:19,512 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-03 09:04:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-03 09:04:19,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:19,513 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-03 09:04:19,513 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:19,514 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:19,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1314568415, now seen corresponding path program 50 times [2018-10-03 09:04:19,514 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:19,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:19,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:19,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:19,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:20,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:20,344 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:20,344 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:20,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:20,378 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:20,378 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:20,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:20,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:20,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-03 09:04:20,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-03 09:04:20,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-03 09:04:20,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:20,488 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 53 states. [2018-10-03 09:04:20,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:20,568 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-03 09:04:20,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-03 09:04:20,569 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 53 [2018-10-03 09:04:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:20,570 INFO L225 Difference]: With dead ends: 57 [2018-10-03 09:04:20,570 INFO L226 Difference]: Without dead ends: 55 [2018-10-03 09:04:20,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime 51 [2018-10-03 09:04:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-03 09:04:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-03 09:04:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-03 09:04:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-03 09:04:20,573 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-03 09:04:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:20,573 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-03 09:04:20,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-03 09:04:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-03 09:04:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-03 09:04:20,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:20,574 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-03 09:04:20,574 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:20,574 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2096917176, now seen corresponding path program 51 times [2018-10-03 09:04:20,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:20,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:20,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:20,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:20,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:21,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:21,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:21,893 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:21,922 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-03 09:04:21,923 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:21,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:22,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:22,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:22,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-03 09:04:22,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-03 09:04:22,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-03 09:04:22,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:22,146 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 54 states. [2018-10-03 09:04:22,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:22,321 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-03 09:04:22,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-03 09:04:22,322 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54 [2018-10-03 09:04:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:22,323 INFO L225 Difference]: With dead ends: 58 [2018-10-03 09:04:22,323 INFO L226 Difference]: Without dead ends: 56 [2018-10-03 09:04:22,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime 52 [2018-10-03 09:04:22,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-03 09:04:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-03 09:04:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-03 09:04:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-03 09:04:22,326 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-03 09:04:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:22,326 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-03 09:04:22,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-03 09:04:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-03 09:04:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-03 09:04:22,326 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:22,327 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-03 09:04:22,327 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:22,327 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:22,327 INFO L82 PathProgramCache]: Analyzing trace with hash -579924991, now seen corresponding path program 52 times [2018-10-03 09:04:22,327 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:22,327 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:22,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:22,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:22,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:23,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:23,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:23,366 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:23,391 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:23,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:23,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:23,542 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:23,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-03 09:04:23,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-03 09:04:23,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-03 09:04:23,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:23,543 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 55 states. [2018-10-03 09:04:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:23,643 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-03 09:04:23,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-03 09:04:23,644 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 55 [2018-10-03 09:04:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:23,645 INFO L225 Difference]: With dead ends: 59 [2018-10-03 09:04:23,645 INFO L226 Difference]: Without dead ends: 57 [2018-10-03 09:04:23,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 53 [2018-10-03 09:04:23,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-03 09:04:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-03 09:04:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-03 09:04:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-03 09:04:23,648 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-03 09:04:23,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:23,648 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-03 09:04:23,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-03 09:04:23,648 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-03 09:04:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-03 09:04:23,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:23,649 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-03 09:04:23,649 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:23,649 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:23,649 INFO L82 PathProgramCache]: Analyzing trace with hash -797807512, now seen corresponding path program 53 times [2018-10-03 09:04:23,649 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:23,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:23,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:23,650 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:23,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:25,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:25,466 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:25,473 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:25,505 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-03 09:04:25,505 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:25,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:25,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:25,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-03 09:04:25,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-03 09:04:25,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-03 09:04:25,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:25,669 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 56 states. [2018-10-03 09:04:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:25,766 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-03 09:04:25,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-03 09:04:25,766 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 56 [2018-10-03 09:04:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:25,767 INFO L225 Difference]: With dead ends: 60 [2018-10-03 09:04:25,767 INFO L226 Difference]: Without dead ends: 58 [2018-10-03 09:04:25,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.6s impTime 54 [2018-10-03 09:04:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-03 09:04:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-03 09:04:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-03 09:04:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-03 09:04:25,770 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-03 09:04:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:25,771 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-03 09:04:25,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-03 09:04:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-03 09:04:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-03 09:04:25,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:25,771 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-03 09:04:25,771 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:25,771 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:25,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1037768929, now seen corresponding path program 54 times [2018-10-03 09:04:25,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:25,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:25,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:25,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:25,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:27,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:27,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:27,582 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:27,588 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:27,620 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-03 09:04:27,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:27,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:27,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:27,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-03 09:04:27,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-03 09:04:27,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-03 09:04:27,852 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:27,852 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 57 states. [2018-10-03 09:04:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:27,942 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-03 09:04:27,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-03 09:04:27,943 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 57 [2018-10-03 09:04:27,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:27,944 INFO L225 Difference]: With dead ends: 61 [2018-10-03 09:04:27,944 INFO L226 Difference]: Without dead ends: 59 [2018-10-03 09:04:27,944 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.4s impTime 55 [2018-10-03 09:04:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-03 09:04:27,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-03 09:04:27,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-03 09:04:27,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-03 09:04:27,947 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-03 09:04:27,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:27,947 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-03 09:04:27,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-03 09:04:27,947 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-03 09:04:27,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-03 09:04:27,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:27,947 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-03 09:04:27,948 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:27,948 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:27,948 INFO L82 PathProgramCache]: Analyzing trace with hash 2106063752, now seen corresponding path program 55 times [2018-10-03 09:04:27,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:27,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:27,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:27,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:27,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:29,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:29,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:29,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:29,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:29,287 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:29,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-03 09:04:29,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-03 09:04:29,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-03 09:04:29,288 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:29,289 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 58 states. [2018-10-03 09:04:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:29,419 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-03 09:04:29,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-03 09:04:29,420 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58 [2018-10-03 09:04:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:29,421 INFO L225 Difference]: With dead ends: 62 [2018-10-03 09:04:29,421 INFO L226 Difference]: Without dead ends: 60 [2018-10-03 09:04:29,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 56 [2018-10-03 09:04:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-03 09:04:29,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-03 09:04:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-03 09:04:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-03 09:04:29,423 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-03 09:04:29,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:29,424 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-03 09:04:29,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-03 09:04:29,424 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-03 09:04:29,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-03 09:04:29,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:29,424 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-03 09:04:29,424 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:29,425 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:29,425 INFO L82 PathProgramCache]: Analyzing trace with hash 863464897, now seen corresponding path program 56 times [2018-10-03 09:04:29,425 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:29,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:29,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:29,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:29,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:30,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:30,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:30,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:30,726 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:30,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:30,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:30,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:30,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:30,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-03 09:04:30,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-03 09:04:30,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-03 09:04:30,869 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:30,869 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 59 states. [2018-10-03 09:04:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:30,974 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-03 09:04:30,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-03 09:04:30,975 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 59 [2018-10-03 09:04:30,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:30,976 INFO L225 Difference]: With dead ends: 63 [2018-10-03 09:04:30,976 INFO L226 Difference]: Without dead ends: 61 [2018-10-03 09:04:30,976 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 57 [2018-10-03 09:04:30,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-03 09:04:30,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-03 09:04:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-03 09:04:30,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-03 09:04:30,978 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-03 09:04:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:30,978 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-03 09:04:30,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-03 09:04:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-03 09:04:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-03 09:04:30,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:30,979 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-03 09:04:30,979 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:30,980 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:30,980 INFO L82 PathProgramCache]: Analyzing trace with hash 997606056, now seen corresponding path program 57 times [2018-10-03 09:04:30,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:30,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:30,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:30,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:30,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:32,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:32,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:32,717 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:32,750 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-03 09:04:32,751 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:32,752 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:32,916 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:32,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-03 09:04:32,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-03 09:04:32,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-03 09:04:32,917 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:32,917 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 60 states. [2018-10-03 09:04:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:33,024 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-03 09:04:33,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-03 09:04:33,025 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 60 [2018-10-03 09:04:33,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:33,025 INFO L225 Difference]: With dead ends: 64 [2018-10-03 09:04:33,026 INFO L226 Difference]: Without dead ends: 62 [2018-10-03 09:04:33,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.5s impTime 58 [2018-10-03 09:04:33,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-03 09:04:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-03 09:04:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-03 09:04:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-03 09:04:33,029 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-03 09:04:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:33,029 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-03 09:04:33,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-03 09:04:33,030 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-03 09:04:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-03 09:04:33,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:33,030 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-03 09:04:33,031 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:33,031 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:33,031 INFO L82 PathProgramCache]: Analyzing trace with hash 861014689, now seen corresponding path program 58 times [2018-10-03 09:04:33,031 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:33,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:33,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:33,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:33,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:34,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:34,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:34,518 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:34,544 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:34,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:34,546 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:34,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:34,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-03 09:04:34,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-03 09:04:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-03 09:04:34,817 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:34,817 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 61 states. [2018-10-03 09:04:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:35,018 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-03 09:04:35,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-03 09:04:35,018 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 61 [2018-10-03 09:04:35,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:35,019 INFO L225 Difference]: With dead ends: 65 [2018-10-03 09:04:35,019 INFO L226 Difference]: Without dead ends: 63 [2018-10-03 09:04:35,020 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.2s impTime 59 [2018-10-03 09:04:35,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-03 09:04:35,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-03 09:04:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-03 09:04:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-03 09:04:35,023 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-03 09:04:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:35,023 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-03 09:04:35,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-03 09:04:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-03 09:04:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-03 09:04:35,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:35,024 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-03 09:04:35,024 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:35,024 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:35,024 INFO L82 PathProgramCache]: Analyzing trace with hash 921649608, now seen corresponding path program 59 times [2018-10-03 09:04:35,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:35,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:35,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:35,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:35,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:36,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:36,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:36,980 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:37,015 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-03 09:04:37,015 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:37,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:37,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:37,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-03 09:04:37,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-03 09:04:37,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-03 09:04:37,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:37,217 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 62 states. [2018-10-03 09:04:37,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:37,348 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-03 09:04:37,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-03 09:04:37,348 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62 [2018-10-03 09:04:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:37,349 INFO L225 Difference]: With dead ends: 66 [2018-10-03 09:04:37,349 INFO L226 Difference]: Without dead ends: 64 [2018-10-03 09:04:37,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 60 [2018-10-03 09:04:37,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-03 09:04:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-03 09:04:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-03 09:04:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-03 09:04:37,352 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-03 09:04:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:37,352 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-03 09:04:37,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-03 09:04:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-03 09:04:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-03 09:04:37,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:37,353 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-03 09:04:37,353 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:37,353 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:37,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1493635199, now seen corresponding path program 60 times [2018-10-03 09:04:37,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:37,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:37,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:37,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:37,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:38,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:38,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:38,486 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:38,523 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-03 09:04:38,523 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:38,526 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:38,663 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:38,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-03 09:04:38,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-03 09:04:38,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-03 09:04:38,664 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:38,664 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 63 states. [2018-10-03 09:04:38,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:38,766 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-03 09:04:38,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-03 09:04:38,767 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 63 [2018-10-03 09:04:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:38,768 INFO L225 Difference]: With dead ends: 67 [2018-10-03 09:04:38,768 INFO L226 Difference]: Without dead ends: 65 [2018-10-03 09:04:38,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime 61 [2018-10-03 09:04:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-03 09:04:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-03 09:04:38,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-03 09:04:38,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-03 09:04:38,771 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-03 09:04:38,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:38,771 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-03 09:04:38,771 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-03 09:04:38,771 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-03 09:04:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-03 09:04:38,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:38,771 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-03 09:04:38,772 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:38,772 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:38,772 INFO L82 PathProgramCache]: Analyzing trace with hash 941947112, now seen corresponding path program 61 times [2018-10-03 09:04:38,772 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:38,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:38,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:38,773 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:38,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:40,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:40,201 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:40,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:40,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:40,358 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:40,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-03 09:04:40,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-03 09:04:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-03 09:04:40,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:40,360 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 64 states. [2018-10-03 09:04:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:40,452 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-03 09:04:40,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-03 09:04:40,453 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 64 [2018-10-03 09:04:40,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:40,454 INFO L225 Difference]: With dead ends: 68 [2018-10-03 09:04:40,454 INFO L226 Difference]: Without dead ends: 66 [2018-10-03 09:04:40,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 62 [2018-10-03 09:04:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-03 09:04:40,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-03 09:04:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-03 09:04:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-03 09:04:40,457 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-03 09:04:40,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:40,457 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-03 09:04:40,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-03 09:04:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-03 09:04:40,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-03 09:04:40,457 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:40,458 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-03 09:04:40,458 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:40,458 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:40,458 INFO L82 PathProgramCache]: Analyzing trace with hash -864412575, now seen corresponding path program 62 times [2018-10-03 09:04:40,458 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:40,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:40,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:40,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:41,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:41,475 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:41,484 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:41,511 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:41,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:41,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:41,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:41,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-03 09:04:41,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-03 09:04:41,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-03 09:04:41,669 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:41,669 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 65 states. [2018-10-03 09:04:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:41,858 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-03 09:04:41,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-03 09:04:41,858 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 65 [2018-10-03 09:04:41,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:41,859 INFO L225 Difference]: With dead ends: 69 [2018-10-03 09:04:41,859 INFO L226 Difference]: Without dead ends: 67 [2018-10-03 09:04:41,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime 63 [2018-10-03 09:04:41,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-03 09:04:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-03 09:04:41,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-03 09:04:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-03 09:04:41,862 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-03 09:04:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:41,862 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-03 09:04:41,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-03 09:04:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-03 09:04:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-03 09:04:41,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:41,863 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-03 09:04:41,863 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:41,863 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1026988024, now seen corresponding path program 63 times [2018-10-03 09:04:41,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:41,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:41,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:41,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:41,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:43,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:43,172 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:43,173 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:43,182 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:43,222 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-03 09:04:43,222 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:43,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:43,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:43,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-03 09:04:43,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-03 09:04:43,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-03 09:04:43,392 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:43,392 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 66 states. [2018-10-03 09:04:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:43,630 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-03 09:04:43,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-03 09:04:43,633 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66 [2018-10-03 09:04:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:43,634 INFO L225 Difference]: With dead ends: 70 [2018-10-03 09:04:43,634 INFO L226 Difference]: Without dead ends: 68 [2018-10-03 09:04:43,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime 64 [2018-10-03 09:04:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-03 09:04:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-03 09:04:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-03 09:04:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-03 09:04:43,636 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-03 09:04:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:43,637 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-03 09:04:43,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-03 09:04:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-03 09:04:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-03 09:04:43,637 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:43,637 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-03 09:04:43,638 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:43,638 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:43,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1771859647, now seen corresponding path program 64 times [2018-10-03 09:04:43,638 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:43,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:43,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:43,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:43,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:45,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:45,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-03 09:04:45,948 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:45,996 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:45,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:46,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:46,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:46,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-03 09:04:46,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-03 09:04:46,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-03 09:04:46,147 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:46,147 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 67 states. [2018-10-03 09:04:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:46,279 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-03 09:04:46,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-03 09:04:46,279 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 67 [2018-10-03 09:04:46,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:46,280 INFO L225 Difference]: With dead ends: 71 [2018-10-03 09:04:46,280 INFO L226 Difference]: Without dead ends: 69 [2018-10-03 09:04:46,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 65 [2018-10-03 09:04:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-03 09:04:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-03 09:04:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-03 09:04:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-03 09:04:46,283 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-03 09:04:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:46,284 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-03 09:04:46,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-03 09:04:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-03 09:04:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-03 09:04:46,284 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:46,285 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-03 09:04:46,285 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:46,285 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:46,285 INFO L82 PathProgramCache]: Analyzing trace with hash 906923816, now seen corresponding path program 65 times [2018-10-03 09:04:46,285 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:46,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:46,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:46,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:46,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:47,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:47,889 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:47,897 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:04:47,936 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-03 09:04:47,937 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:47,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:48,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:48,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-03 09:04:48,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-03 09:04:48,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-03 09:04:48,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:48,123 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 68 states. [2018-10-03 09:04:48,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:48,259 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-03 09:04:48,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-03 09:04:48,259 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 68 [2018-10-03 09:04:48,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:48,260 INFO L225 Difference]: With dead ends: 72 [2018-10-03 09:04:48,260 INFO L226 Difference]: Without dead ends: 70 [2018-10-03 09:04:48,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.4s impTime 66 [2018-10-03 09:04:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-03 09:04:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-03 09:04:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-03 09:04:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-03 09:04:48,262 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-03 09:04:48,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:48,262 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-03 09:04:48,262 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-03 09:04:48,262 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-03 09:04:48,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-03 09:04:48,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:48,263 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-03 09:04:48,263 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:48,263 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:48,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1950134751, now seen corresponding path program 66 times [2018-10-03 09:04:48,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:48,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:48,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:48,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:48,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:49,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:49,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:49,682 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:04:49,724 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-03 09:04:49,724 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:49,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:49,862 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:49,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-03 09:04:49,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-03 09:04:49,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-03 09:04:49,863 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:49,863 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 69 states. [2018-10-03 09:04:49,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:49,987 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-03 09:04:49,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-03 09:04:49,987 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 69 [2018-10-03 09:04:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:49,987 INFO L225 Difference]: With dead ends: 73 [2018-10-03 09:04:49,987 INFO L226 Difference]: Without dead ends: 71 [2018-10-03 09:04:49,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime 67 [2018-10-03 09:04:49,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-03 09:04:49,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-03 09:04:49,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-03 09:04:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-03 09:04:49,990 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-03 09:04:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:49,990 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-03 09:04:49,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-03 09:04:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-03 09:04:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-03 09:04:49,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:49,991 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-03 09:04:49,991 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:49,991 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:49,991 INFO L82 PathProgramCache]: Analyzing trace with hash -324637112, now seen corresponding path program 67 times [2018-10-03 09:04:49,991 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:49,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:49,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:49,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:49,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:52,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:52,250 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:52,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:52,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:52,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:52,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-03 09:04:52,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-03 09:04:52,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-03 09:04:52,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:52,424 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 70 states. [2018-10-03 09:04:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:52,557 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-03 09:04:52,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-03 09:04:52,558 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70 [2018-10-03 09:04:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:52,559 INFO L225 Difference]: With dead ends: 74 [2018-10-03 09:04:52,559 INFO L226 Difference]: Without dead ends: 72 [2018-10-03 09:04:52,559 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime 68 [2018-10-03 09:04:52,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-03 09:04:52,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-03 09:04:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-03 09:04:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-03 09:04:52,561 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-03 09:04:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:52,561 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-03 09:04:52,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-03 09:04:52,562 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-03 09:04:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-03 09:04:52,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:52,563 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-03 09:04:52,563 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:52,563 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:52,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1473817855, now seen corresponding path program 68 times [2018-10-03 09:04:52,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:52,564 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:52,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:52,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:04:52,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:54,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:54,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:54,605 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:04:54,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:04:54,634 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:54,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:54,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:54,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-03 09:04:54,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-03 09:04:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-03 09:04:54,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:54,780 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 71 states. [2018-10-03 09:04:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:54,927 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-03 09:04:54,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-03 09:04:54,927 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 71 [2018-10-03 09:04:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:54,928 INFO L225 Difference]: With dead ends: 75 [2018-10-03 09:04:54,928 INFO L226 Difference]: Without dead ends: 73 [2018-10-03 09:04:54,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.8s impTime 69 [2018-10-03 09:04:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-03 09:04:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-03 09:04:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-03 09:04:54,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-03 09:04:54,931 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-03 09:04:54,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:54,931 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-03 09:04:54,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-03 09:04:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-03 09:04:54,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-03 09:04:54,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:54,932 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-03 09:04:54,932 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:54,932 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:54,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1556284776, now seen corresponding path program 69 times [2018-10-03 09:04:54,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:54,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:54,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:54,933 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:54,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:57,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:57,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:57,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:57,470 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:04:57,535 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-03 09:04:57,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:57,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:57,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:57,958 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:57,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-03 09:04:57,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-03 09:04:57,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-03 09:04:57,959 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:57,959 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 72 states. [2018-10-03 09:04:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:58,143 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-03 09:04:58,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-03 09:04:58,144 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 72 [2018-10-03 09:04:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:58,145 INFO L225 Difference]: With dead ends: 76 [2018-10-03 09:04:58,145 INFO L226 Difference]: Without dead ends: 74 [2018-10-03 09:04:58,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 70 [2018-10-03 09:04:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-03 09:04:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-03 09:04:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-03 09:04:58,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-03 09:04:58,147 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-03 09:04:58,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:58,148 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-03 09:04:58,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-03 09:04:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-03 09:04:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-03 09:04:58,148 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:58,148 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-03 09:04:58,149 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:58,149 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:58,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1000185825, now seen corresponding path program 70 times [2018-10-03 09:04:58,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:58,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:58,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:58,149 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:58,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:04:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:59,381 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:04:59,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:04:59,388 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:04:59,440 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:04:59,441 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:04:59,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:04:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:04:59,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:04:59,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-03 09:04:59,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-03 09:04:59,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-03 09:04:59,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:04:59,689 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 73 states. [2018-10-03 09:04:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:04:59,854 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-03 09:04:59,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-03 09:04:59,855 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 73 [2018-10-03 09:04:59,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:04:59,856 INFO L225 Difference]: With dead ends: 77 [2018-10-03 09:04:59,856 INFO L226 Difference]: Without dead ends: 75 [2018-10-03 09:04:59,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.0s impTime 71 [2018-10-03 09:04:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-03 09:04:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-03 09:04:59,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-03 09:04:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-03 09:04:59,859 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-03 09:04:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:04:59,859 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-03 09:04:59,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-03 09:04:59,859 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-03 09:04:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-03 09:04:59,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:04:59,860 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-03 09:04:59,860 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:04:59,860 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:04:59,860 INFO L82 PathProgramCache]: Analyzing trace with hash 940987528, now seen corresponding path program 71 times [2018-10-03 09:04:59,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:04:59,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:04:59,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:59,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:04:59,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:04:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:02,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:02,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:02,119 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:02,126 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:02,169 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-03 09:05:02,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:02,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:02,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:02,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-03 09:05:02,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-03 09:05:02,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-03 09:05:02,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:02,568 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 74 states. [2018-10-03 09:05:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:02,703 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-03 09:05:02,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-03 09:05:02,703 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74 [2018-10-03 09:05:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:02,704 INFO L225 Difference]: With dead ends: 78 [2018-10-03 09:05:02,704 INFO L226 Difference]: Without dead ends: 76 [2018-10-03 09:05:02,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.0s impTime 72 [2018-10-03 09:05:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-03 09:05:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-03 09:05:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-03 09:05:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-03 09:05:02,708 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-03 09:05:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:02,709 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-03 09:05:02,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-03 09:05:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-03 09:05:02,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-03 09:05:02,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:02,709 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-03 09:05:02,710 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:02,710 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash -894159679, now seen corresponding path program 72 times [2018-10-03 09:05:02,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:02,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:02,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:02,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:02,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:05,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:05,107 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:05,114 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:05,165 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-03 09:05:05,165 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:05,168 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:05,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:05,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:05,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-03 09:05:05,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-03 09:05:05,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-03 09:05:05,483 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:05,483 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 75 states. [2018-10-03 09:05:05,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:05,692 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-03 09:05:05,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-03 09:05:05,692 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 75 [2018-10-03 09:05:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:05,693 INFO L225 Difference]: With dead ends: 79 [2018-10-03 09:05:05,693 INFO L226 Difference]: Without dead ends: 77 [2018-10-03 09:05:05,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.1s impTime 73 [2018-10-03 09:05:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-03 09:05:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-03 09:05:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-03 09:05:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-03 09:05:05,696 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-03 09:05:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:05,696 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-03 09:05:05,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-03 09:05:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-03 09:05:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-03 09:05:05,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:05,697 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-03 09:05:05,697 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:05,697 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1949148248, now seen corresponding path program 73 times [2018-10-03 09:05:05,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:05,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:05,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:05,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:05,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:09,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:09,536 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:09,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:09,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:09,747 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:09,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-03 09:05:09,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-03 09:05:09,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-03 09:05:09,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:09,748 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 76 states. [2018-10-03 09:05:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:09,914 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-03 09:05:09,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-03 09:05:09,914 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 76 [2018-10-03 09:05:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:09,915 INFO L225 Difference]: With dead ends: 80 [2018-10-03 09:05:09,915 INFO L226 Difference]: Without dead ends: 78 [2018-10-03 09:05:09,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.3s impTime 74 [2018-10-03 09:05:09,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-03 09:05:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-03 09:05:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-03 09:05:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-03 09:05:09,918 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-03 09:05:09,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:09,918 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-03 09:05:09,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-03 09:05:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-03 09:05:09,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-03 09:05:09,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:09,919 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-03 09:05:09,919 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:09,920 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:09,920 INFO L82 PathProgramCache]: Analyzing trace with hash -294055519, now seen corresponding path program 74 times [2018-10-03 09:05:09,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:09,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:09,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:09,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:09,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:12,573 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:12,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:12,580 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:12,610 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:12,611 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:12,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:12,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:12,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-03 09:05:12,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-03 09:05:12,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-03 09:05:12,772 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:12,772 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 77 states. [2018-10-03 09:05:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:12,949 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-03 09:05:12,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-03 09:05:12,950 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 77 [2018-10-03 09:05:12,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:12,950 INFO L225 Difference]: With dead ends: 81 [2018-10-03 09:05:12,950 INFO L226 Difference]: Without dead ends: 79 [2018-10-03 09:05:12,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 75 [2018-10-03 09:05:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-03 09:05:12,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-03 09:05:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-03 09:05:12,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-03 09:05:12,953 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-03 09:05:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:12,953 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-03 09:05:12,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-03 09:05:12,954 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-03 09:05:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-03 09:05:12,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:12,955 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-03 09:05:12,955 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:12,955 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash -525788472, now seen corresponding path program 75 times [2018-10-03 09:05:12,955 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:12,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:12,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:12,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:12,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:12,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:16,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:16,712 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:16,719 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:16,764 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-03 09:05:16,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:16,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:16,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:16,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-03 09:05:16,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-03 09:05:16,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-03 09:05:16,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:16,932 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 78 states. [2018-10-03 09:05:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:17,883 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-03 09:05:17,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-03 09:05:17,884 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78 [2018-10-03 09:05:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:17,884 INFO L225 Difference]: With dead ends: 82 [2018-10-03 09:05:17,884 INFO L226 Difference]: Without dead ends: 80 [2018-10-03 09:05:17,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.3s impTime 76 [2018-10-03 09:05:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-03 09:05:17,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-03 09:05:17,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-03 09:05:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-03 09:05:17,887 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-03 09:05:17,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:17,888 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-03 09:05:17,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-03 09:05:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-03 09:05:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-03 09:05:17,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:17,888 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-03 09:05:17,889 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:17,889 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:17,889 INFO L82 PathProgramCache]: Analyzing trace with hash 880424577, now seen corresponding path program 76 times [2018-10-03 09:05:17,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:17,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:17,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:17,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:21,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:21,559 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:21,565 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:21,616 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:21,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:21,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:21,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:21,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-03 09:05:21,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-03 09:05:21,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-03 09:05:21,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:21,785 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 79 states. [2018-10-03 09:05:22,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:22,367 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-03 09:05:22,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-03 09:05:22,367 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 79 [2018-10-03 09:05:22,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:22,368 INFO L225 Difference]: With dead ends: 83 [2018-10-03 09:05:22,368 INFO L226 Difference]: Without dead ends: 81 [2018-10-03 09:05:22,368 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.2s impTime 77 [2018-10-03 09:05:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-03 09:05:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-03 09:05:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-03 09:05:22,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-03 09:05:22,370 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-03 09:05:22,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:22,370 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-03 09:05:22,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-03 09:05:22,371 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-03 09:05:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-03 09:05:22,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:22,371 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-03 09:05:22,371 INFO L423 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:22,372 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:22,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1523356136, now seen corresponding path program 77 times [2018-10-03 09:05:22,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:22,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:22,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:22,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:22,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:24,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:24,711 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:24,718 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:24,829 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-03 09:05:24,829 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:24,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:25,057 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:25,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-03 09:05:25,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-03 09:05:25,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-03 09:05:25,058 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:25,058 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 80 states. [2018-10-03 09:05:25,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:25,228 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-03 09:05:25,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-03 09:05:25,228 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 80 [2018-10-03 09:05:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:25,229 INFO L225 Difference]: With dead ends: 84 [2018-10-03 09:05:25,229 INFO L226 Difference]: Without dead ends: 82 [2018-10-03 09:05:25,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 78 [2018-10-03 09:05:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-03 09:05:25,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-03 09:05:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-03 09:05:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-03 09:05:25,233 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-03 09:05:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:25,233 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-03 09:05:25,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-03 09:05:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-03 09:05:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-03 09:05:25,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:25,235 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-03 09:05:25,235 INFO L423 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:25,235 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash -20602015, now seen corresponding path program 78 times [2018-10-03 09:05:25,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:25,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:25,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:25,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:25,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:27,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:27,944 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:27,951 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:27,997 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-03 09:05:27,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:28,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:28,169 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:28,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-03 09:05:28,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-03 09:05:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-03 09:05:28,170 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:28,171 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 81 states. [2018-10-03 09:05:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:28,304 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-03 09:05:28,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-03 09:05:28,305 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 81 [2018-10-03 09:05:28,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:28,305 INFO L225 Difference]: With dead ends: 85 [2018-10-03 09:05:28,306 INFO L226 Difference]: Without dead ends: 83 [2018-10-03 09:05:28,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.3s impTime 79 [2018-10-03 09:05:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-03 09:05:28,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-03 09:05:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-03 09:05:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-03 09:05:28,309 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-03 09:05:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:28,309 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-03 09:05:28,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-03 09:05:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-03 09:05:28,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-03 09:05:28,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:28,310 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-03 09:05:28,310 INFO L423 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:28,311 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:28,311 INFO L82 PathProgramCache]: Analyzing trace with hash -638664440, now seen corresponding path program 79 times [2018-10-03 09:05:28,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:28,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:28,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:28,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:28,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:30,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:30,331 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:30,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:30,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:30,565 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:30,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-03 09:05:30,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-03 09:05:30,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-03 09:05:30,566 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:30,566 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 82 states. [2018-10-03 09:05:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:30,727 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-03 09:05:30,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-03 09:05:30,728 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82 [2018-10-03 09:05:30,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:30,728 INFO L225 Difference]: With dead ends: 86 [2018-10-03 09:05:30,729 INFO L226 Difference]: Without dead ends: 84 [2018-10-03 09:05:30,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 80 [2018-10-03 09:05:30,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-03 09:05:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-03 09:05:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-03 09:05:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-03 09:05:30,732 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-03 09:05:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:30,732 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-03 09:05:30,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-03 09:05:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-03 09:05:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-03 09:05:30,732 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:30,732 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-03 09:05:30,733 INFO L423 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:30,733 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:30,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1676236865, now seen corresponding path program 80 times [2018-10-03 09:05:30,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:30,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:30,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:30,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:30,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:33,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:33,733 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:33,740 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:33,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:33,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:33,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:34,951 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:34,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-03 09:05:34,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-03 09:05:34,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-03 09:05:34,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:34,952 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 83 states. [2018-10-03 09:05:35,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:35,151 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-03 09:05:35,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-03 09:05:35,151 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 83 [2018-10-03 09:05:35,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:35,152 INFO L225 Difference]: With dead ends: 87 [2018-10-03 09:05:35,152 INFO L226 Difference]: Without dead ends: 85 [2018-10-03 09:05:35,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 2.7s impTime 81 [2018-10-03 09:05:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-03 09:05:35,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-03 09:05:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-03 09:05:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-03 09:05:35,154 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-03 09:05:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:35,154 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-03 09:05:35,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-03 09:05:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-03 09:05:35,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-03 09:05:35,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:35,155 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-03 09:05:35,155 INFO L423 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:35,155 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:35,155 INFO L82 PathProgramCache]: Analyzing trace with hash 423733288, now seen corresponding path program 81 times [2018-10-03 09:05:35,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:35,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:35,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:35,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:35,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:37,223 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:37,223 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:37,231 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:37,285 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-03 09:05:37,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:37,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:37,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:37,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-03 09:05:37,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-03 09:05:37,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-03 09:05:37,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:37,518 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 84 states. [2018-10-03 09:05:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:37,688 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-03 09:05:37,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-03 09:05:37,688 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 84 [2018-10-03 09:05:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:37,689 INFO L225 Difference]: With dead ends: 88 [2018-10-03 09:05:37,689 INFO L226 Difference]: Without dead ends: 86 [2018-10-03 09:05:37,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime 82 [2018-10-03 09:05:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-03 09:05:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-03 09:05:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-03 09:05:37,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-03 09:05:37,692 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-03 09:05:37,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:37,692 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-03 09:05:37,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-03 09:05:37,692 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-03 09:05:37,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-03 09:05:37,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:37,693 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-03 09:05:37,693 INFO L423 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:37,693 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:37,693 INFO L82 PathProgramCache]: Analyzing trace with hash 250828065, now seen corresponding path program 82 times [2018-10-03 09:05:37,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:37,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:37,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:37,694 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:37,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:40,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:40,767 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:40,775 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:05:40,810 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:05:40,811 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:40,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:42,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:42,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-03 09:05:42,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-03 09:05:42,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-03 09:05:42,454 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:42,455 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 85 states. [2018-10-03 09:05:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:42,886 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-03 09:05:42,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-03 09:05:42,887 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 85 [2018-10-03 09:05:42,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:42,887 INFO L225 Difference]: With dead ends: 89 [2018-10-03 09:05:42,888 INFO L226 Difference]: Without dead ends: 87 [2018-10-03 09:05:42,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 2.7s impTime 83 [2018-10-03 09:05:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-03 09:05:42,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-03 09:05:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-03 09:05:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-03 09:05:42,890 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-03 09:05:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:42,891 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-03 09:05:42,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-03 09:05:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-03 09:05:42,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-03 09:05:42,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:42,892 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-03 09:05:42,892 INFO L423 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:42,892 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:42,892 INFO L82 PathProgramCache]: Analyzing trace with hash -814266552, now seen corresponding path program 83 times [2018-10-03 09:05:42,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:42,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:42,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:42,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:42,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:47,323 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:47,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:47,331 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:05:47,386 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-03 09:05:47,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:47,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:47,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:47,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-03 09:05:47,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-03 09:05:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-03 09:05:47,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:47,577 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 86 states. [2018-10-03 09:05:47,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:47,799 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-03 09:05:47,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-03 09:05:47,800 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86 [2018-10-03 09:05:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:47,800 INFO L225 Difference]: With dead ends: 90 [2018-10-03 09:05:47,801 INFO L226 Difference]: Without dead ends: 88 [2018-10-03 09:05:47,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5s Time 3.9s impTime 84 [2018-10-03 09:05:47,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-03 09:05:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-03 09:05:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-03 09:05:47,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-03 09:05:47,803 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-03 09:05:47,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:47,804 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-03 09:05:47,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-03 09:05:47,804 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-03 09:05:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-03 09:05:47,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:47,805 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-03 09:05:47,805 INFO L423 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:47,805 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:47,805 INFO L82 PathProgramCache]: Analyzing trace with hash 527538689, now seen corresponding path program 84 times [2018-10-03 09:05:47,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:47,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:47,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:47,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:49,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:49,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:49,802 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:05:49,856 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-03 09:05:49,856 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:49,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:50,051 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:50,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-03 09:05:50,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-03 09:05:50,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-03 09:05:50,053 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:50,053 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 87 states. [2018-10-03 09:05:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:50,227 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-03 09:05:50,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-03 09:05:50,228 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 87 [2018-10-03 09:05:50,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:50,228 INFO L225 Difference]: With dead ends: 91 [2018-10-03 09:05:50,229 INFO L226 Difference]: Without dead ends: 89 [2018-10-03 09:05:50,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.6s impTime 85 [2018-10-03 09:05:50,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-03 09:05:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-03 09:05:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-03 09:05:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-03 09:05:50,231 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-03 09:05:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:50,231 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-03 09:05:50,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-03 09:05:50,232 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-03 09:05:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-03 09:05:50,232 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:50,232 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-03 09:05:50,232 INFO L423 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:50,233 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:50,233 INFO L82 PathProgramCache]: Analyzing trace with hash -826171800, now seen corresponding path program 85 times [2018-10-03 09:05:50,233 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:50,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:50,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:50,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:52,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:52,658 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:52,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:52,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:52,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:52,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-03 09:05:52,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-03 09:05:52,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-03 09:05:52,885 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:52,885 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 88 states. [2018-10-03 09:05:53,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:53,026 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-03 09:05:53,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-03 09:05:53,026 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 88 [2018-10-03 09:05:53,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:53,027 INFO L225 Difference]: With dead ends: 92 [2018-10-03 09:05:53,027 INFO L226 Difference]: Without dead ends: 90 [2018-10-03 09:05:53,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.2s impTime 86 [2018-10-03 09:05:53,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-03 09:05:53,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-03 09:05:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-03 09:05:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-03 09:05:53,030 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-03 09:05:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:53,030 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-03 09:05:53,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-03 09:05:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-03 09:05:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-03 09:05:53,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:53,031 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-03 09:05:53,031 INFO L423 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:53,031 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:53,032 INFO L82 PathProgramCache]: Analyzing trace with hash 158476001, now seen corresponding path program 86 times [2018-10-03 09:05:53,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:53,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:53,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:05:53,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:55,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:55,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:55,495 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:05:55,532 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:05:55,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:55,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:55,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:55,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-03 09:05:55,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-03 09:05:55,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-03 09:05:55,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:55,730 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 89 states. [2018-10-03 09:05:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:55,909 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-03 09:05:55,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-03 09:05:55,909 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 89 [2018-10-03 09:05:55,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:55,910 INFO L225 Difference]: With dead ends: 93 [2018-10-03 09:05:55,910 INFO L226 Difference]: Without dead ends: 91 [2018-10-03 09:05:55,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime 87 [2018-10-03 09:05:55,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-03 09:05:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-03 09:05:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-03 09:05:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-03 09:05:55,912 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-03 09:05:55,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:55,912 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-03 09:05:55,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-03 09:05:55,912 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-03 09:05:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-03 09:05:55,913 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:55,913 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-03 09:05:55,914 INFO L423 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:55,914 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:55,914 INFO L82 PathProgramCache]: Analyzing trace with hash 617786760, now seen corresponding path program 87 times [2018-10-03 09:05:55,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:55,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:55,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:55,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:55,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:05:58,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:58,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:05:58,863 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:05:58,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:05:58,931 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-03 09:05:58,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:05:58,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:05:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:05:59,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:05:59,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-03 09:05:59,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-03 09:05:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-03 09:05:59,123 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:05:59,123 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 90 states. [2018-10-03 09:05:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:05:59,304 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-03 09:05:59,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-03 09:05:59,304 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90 [2018-10-03 09:05:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:05:59,305 INFO L225 Difference]: With dead ends: 94 [2018-10-03 09:05:59,305 INFO L226 Difference]: Without dead ends: 92 [2018-10-03 09:05:59,305 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 88 [2018-10-03 09:05:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-03 09:05:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-03 09:05:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-03 09:05:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-03 09:05:59,307 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-03 09:05:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:05:59,307 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-03 09:05:59,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-03 09:05:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-03 09:05:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-03 09:05:59,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:05:59,308 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-03 09:05:59,308 INFO L423 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:05:59,308 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:05:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1971518401, now seen corresponding path program 88 times [2018-10-03 09:05:59,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:05:59,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:05:59,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:05:59,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:05:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:01,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:01,958 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:01,978 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:02,016 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:02,016 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:02,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:02,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:02,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-03 09:06:02,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-03 09:06:02,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-03 09:06:02,212 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:02,212 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 91 states. [2018-10-03 09:06:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:02,390 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-03 09:06:02,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-03 09:06:02,391 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 91 [2018-10-03 09:06:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:02,391 INFO L225 Difference]: With dead ends: 95 [2018-10-03 09:06:02,391 INFO L226 Difference]: Without dead ends: 93 [2018-10-03 09:06:02,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.4s impTime 89 [2018-10-03 09:06:02,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-03 09:06:02,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-03 09:06:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-03 09:06:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-03 09:06:02,394 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-03 09:06:02,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:02,394 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-03 09:06:02,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-03 09:06:02,394 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-03 09:06:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-03 09:06:02,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:02,395 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-03 09:06:02,395 INFO L423 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:02,395 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:02,396 INFO L82 PathProgramCache]: Analyzing trace with hash 987526312, now seen corresponding path program 89 times [2018-10-03 09:06:02,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:02,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:02,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:02,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:02,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:04,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:04,593 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:04,601 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:04,725 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-03 09:06:04,726 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:04,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:05,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:05,022 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:05,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-03 09:06:05,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-03 09:06:05,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-03 09:06:05,023 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:05,023 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 92 states. [2018-10-03 09:06:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:05,191 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-03 09:06:05,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-03 09:06:05,191 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 92 [2018-10-03 09:06:05,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:05,192 INFO L225 Difference]: With dead ends: 96 [2018-10-03 09:06:05,192 INFO L226 Difference]: Without dead ends: 94 [2018-10-03 09:06:05,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime 90 [2018-10-03 09:06:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-03 09:06:05,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-03 09:06:05,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-03 09:06:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-03 09:06:05,194 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-03 09:06:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:05,194 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-03 09:06:05,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-03 09:06:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-03 09:06:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-03 09:06:05,195 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:05,195 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-03 09:06:05,195 INFO L423 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:05,195 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:05,195 INFO L82 PathProgramCache]: Analyzing trace with hash 548542625, now seen corresponding path program 90 times [2018-10-03 09:06:05,195 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:05,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:05,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:05,196 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:05,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:07,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:07,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:07,533 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:07,590 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-03 09:06:07,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:07,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:07,787 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:07,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-03 09:06:07,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-03 09:06:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-03 09:06:07,788 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:07,789 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 93 states. [2018-10-03 09:06:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:07,964 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-03 09:06:07,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-03 09:06:07,965 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 93 [2018-10-03 09:06:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:07,965 INFO L225 Difference]: With dead ends: 97 [2018-10-03 09:06:07,965 INFO L226 Difference]: Without dead ends: 95 [2018-10-03 09:06:07,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime 91 [2018-10-03 09:06:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-03 09:06:07,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-03 09:06:07,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-03 09:06:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-03 09:06:07,968 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-03 09:06:07,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:07,968 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-03 09:06:07,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-03 09:06:07,969 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-03 09:06:07,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-03 09:06:07,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:07,969 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-03 09:06:07,970 INFO L423 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:07,970 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:07,970 INFO L82 PathProgramCache]: Analyzing trace with hash -175049784, now seen corresponding path program 91 times [2018-10-03 09:06:07,970 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:07,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:07,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:07,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:07,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:11,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:11,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:11,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:12,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:12,300 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:12,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-03 09:06:12,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-03 09:06:12,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-03 09:06:12,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:12,302 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 94 states. [2018-10-03 09:06:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:12,548 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-03 09:06:12,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-03 09:06:12,548 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94 [2018-10-03 09:06:12,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:12,549 INFO L225 Difference]: With dead ends: 98 [2018-10-03 09:06:12,549 INFO L226 Difference]: Without dead ends: 96 [2018-10-03 09:06:12,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1s Time 3.6s impTime 92 [2018-10-03 09:06:12,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-03 09:06:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-03 09:06:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-03 09:06:12,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-03 09:06:12,552 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-03 09:06:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:12,552 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-03 09:06:12,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-03 09:06:12,552 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-03 09:06:12,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-03 09:06:12,552 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:12,552 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-03 09:06:12,553 INFO L423 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:12,553 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:12,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1131577983, now seen corresponding path program 92 times [2018-10-03 09:06:12,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:12,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:12,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:12,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:12,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:15,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:15,514 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:15,521 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:15,566 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:15,567 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:15,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:15,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:15,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-03 09:06:15,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-03 09:06:15,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-03 09:06:15,818 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:15,818 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 95 states. [2018-10-03 09:06:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:16,031 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-03 09:06:16,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-03 09:06:16,031 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 95 [2018-10-03 09:06:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:16,032 INFO L225 Difference]: With dead ends: 99 [2018-10-03 09:06:16,032 INFO L226 Difference]: Without dead ends: 97 [2018-10-03 09:06:16,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime 93 [2018-10-03 09:06:16,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-03 09:06:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-03 09:06:16,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-03 09:06:16,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-03 09:06:16,035 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-03 09:06:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:16,035 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-03 09:06:16,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-03 09:06:16,035 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-03 09:06:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-03 09:06:16,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:16,036 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-03 09:06:16,036 INFO L423 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:16,036 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:16,036 INFO L82 PathProgramCache]: Analyzing trace with hash -719181080, now seen corresponding path program 93 times [2018-10-03 09:06:16,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:16,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:16,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:16,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:16,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:18,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:18,763 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:18,769 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:18,832 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-03 09:06:18,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:18,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:19,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:19,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:19,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-03 09:06:19,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-03 09:06:19,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-03 09:06:19,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:19,063 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 96 states. [2018-10-03 09:06:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:19,278 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-03 09:06:19,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-03 09:06:19,279 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 96 [2018-10-03 09:06:19,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:19,279 INFO L225 Difference]: With dead ends: 100 [2018-10-03 09:06:19,279 INFO L226 Difference]: Without dead ends: 98 [2018-10-03 09:06:19,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime 94 [2018-10-03 09:06:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-03 09:06:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-03 09:06:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-03 09:06:19,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-03 09:06:19,282 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-03 09:06:19,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:19,282 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-03 09:06:19,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-03 09:06:19,282 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-03 09:06:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-03 09:06:19,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:19,283 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-03 09:06:19,283 INFO L423 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:19,283 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:19,283 INFO L82 PathProgramCache]: Analyzing trace with hash -819778975, now seen corresponding path program 94 times [2018-10-03 09:06:19,283 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:19,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:19,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:19,284 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:19,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:23,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:23,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:23,056 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:23,065 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:23,105 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:23,105 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:23,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:23,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:23,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-03 09:06:23,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-03 09:06:23,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-03 09:06:23,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:23,309 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 97 states. [2018-10-03 09:06:23,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:23,513 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-03 09:06:23,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-03 09:06:23,514 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 97 [2018-10-03 09:06:23,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:23,514 INFO L225 Difference]: With dead ends: 101 [2018-10-03 09:06:23,515 INFO L226 Difference]: Without dead ends: 99 [2018-10-03 09:06:23,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s Time 3.5s impTime 95 [2018-10-03 09:06:23,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-03 09:06:23,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-03 09:06:23,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-03 09:06:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-03 09:06:23,518 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-03 09:06:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:23,518 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-03 09:06:23,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-03 09:06:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-03 09:06:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-03 09:06:23,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:23,518 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-03 09:06:23,519 INFO L423 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:23,519 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:23,519 INFO L82 PathProgramCache]: Analyzing trace with hash 356653576, now seen corresponding path program 95 times [2018-10-03 09:06:23,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:23,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:23,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:23,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:23,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:26,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:26,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:26,613 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:26,620 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:26,687 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-03 09:06:26,687 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:26,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:26,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:26,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-03 09:06:26,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-03 09:06:26,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-03 09:06:26,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:26,905 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 98 states. [2018-10-03 09:06:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:27,151 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-03 09:06:27,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-03 09:06:27,152 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98 [2018-10-03 09:06:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:27,152 INFO L225 Difference]: With dead ends: 102 [2018-10-03 09:06:27,152 INFO L226 Difference]: Without dead ends: 100 [2018-10-03 09:06:27,153 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.8s impTime 96 [2018-10-03 09:06:27,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-03 09:06:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-03 09:06:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-03 09:06:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-03 09:06:27,155 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-03 09:06:27,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:27,155 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-03 09:06:27,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-03 09:06:27,155 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-03 09:06:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-03 09:06:27,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:27,155 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-03 09:06:27,156 INFO L423 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:27,156 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1828643007, now seen corresponding path program 96 times [2018-10-03 09:06:27,156 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:27,156 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:27,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:27,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:27,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:29,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:29,770 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:29,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:06:29,841 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-03 09:06:29,841 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:29,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:30,061 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:30,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-03 09:06:30,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-03 09:06:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-03 09:06:30,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:30,063 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 99 states. [2018-10-03 09:06:30,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:30,226 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-03 09:06:30,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-03 09:06:30,227 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 99 [2018-10-03 09:06:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:30,228 INFO L225 Difference]: With dead ends: 103 [2018-10-03 09:06:30,228 INFO L226 Difference]: Without dead ends: 101 [2018-10-03 09:06:30,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime 97 [2018-10-03 09:06:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-03 09:06:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-03 09:06:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-03 09:06:30,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-03 09:06:30,232 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-03 09:06:30,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:30,232 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-03 09:06:30,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-03 09:06:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-03 09:06:30,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-03 09:06:30,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:30,233 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-03 09:06:30,233 INFO L423 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:30,233 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:30,233 INFO L82 PathProgramCache]: Analyzing trace with hash -853360344, now seen corresponding path program 97 times [2018-10-03 09:06:30,234 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:30,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:30,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:30,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:30,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:34,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:34,134 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:34,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:34,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:34,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:34,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-03 09:06:34,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-03 09:06:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-03 09:06:34,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:34,393 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 100 states. [2018-10-03 09:06:34,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:34,642 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-03 09:06:34,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-03 09:06:34,642 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 100 [2018-10-03 09:06:34,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:34,643 INFO L225 Difference]: With dead ends: 104 [2018-10-03 09:06:34,644 INFO L226 Difference]: Without dead ends: 102 [2018-10-03 09:06:34,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.6s impTime 98 [2018-10-03 09:06:34,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-03 09:06:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-03 09:06:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-03 09:06:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-03 09:06:34,646 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-03 09:06:34,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:34,646 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-03 09:06:34,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-03 09:06:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-03 09:06:34,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-03 09:06:34,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:34,647 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-03 09:06:34,647 INFO L423 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:34,647 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:34,647 INFO L82 PathProgramCache]: Analyzing trace with hash -684368863, now seen corresponding path program 98 times [2018-10-03 09:06:34,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:34,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:34,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:34,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:06:34,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:39,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:39,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:39,436 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:39,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:06:39,485 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:06:39,485 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:39,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:39,701 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:39,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-03 09:06:39,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-03 09:06:39,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-03 09:06:39,703 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:39,703 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 101 states. [2018-10-03 09:06:40,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:40,007 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-03 09:06:40,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-03 09:06:40,008 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 101 [2018-10-03 09:06:40,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:40,008 INFO L225 Difference]: With dead ends: 105 [2018-10-03 09:06:40,008 INFO L226 Difference]: Without dead ends: 103 [2018-10-03 09:06:40,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time 4.5s impTime 99 [2018-10-03 09:06:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-03 09:06:40,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-03 09:06:40,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-03 09:06:40,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-03 09:06:40,011 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-03 09:06:40,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:40,011 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-03 09:06:40,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-03 09:06:40,011 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-03 09:06:40,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-03 09:06:40,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:40,012 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-03 09:06:40,012 INFO L423 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:40,012 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:40,012 INFO L82 PathProgramCache]: Analyzing trace with hash 259399752, now seen corresponding path program 99 times [2018-10-03 09:06:40,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:40,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:40,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:40,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:40,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:44,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:44,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:44,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:44,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:06:44,771 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-03 09:06:44,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:44,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:44,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:44,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-03 09:06:44,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-03 09:06:44,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-03 09:06:44,983 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:44,983 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 102 states. [2018-10-03 09:06:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:45,299 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-03 09:06:45,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-03 09:06:45,300 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102 [2018-10-03 09:06:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:45,301 INFO L225 Difference]: With dead ends: 106 [2018-10-03 09:06:45,301 INFO L226 Difference]: Without dead ends: 104 [2018-10-03 09:06:45,301 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.4s impTime 100 [2018-10-03 09:06:45,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-03 09:06:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-03 09:06:45,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-03 09:06:45,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-03 09:06:45,304 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-03 09:06:45,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:45,304 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-03 09:06:45,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-03 09:06:45,304 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-03 09:06:45,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-03 09:06:45,305 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:45,305 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-03 09:06:45,305 INFO L423 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:45,305 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:45,305 INFO L82 PathProgramCache]: Analyzing trace with hash -548544255, now seen corresponding path program 100 times [2018-10-03 09:06:45,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:45,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:45,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:45,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:49,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:49,964 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:49,972 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:06:50,012 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:06:50,012 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:50,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:50,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:50,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:50,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-03 09:06:50,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-03 09:06:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-03 09:06:50,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:50,229 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 103 states. [2018-10-03 09:06:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:50,559 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-03 09:06:50,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-03 09:06:50,559 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 103 [2018-10-03 09:06:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:50,560 INFO L225 Difference]: With dead ends: 107 [2018-10-03 09:06:50,560 INFO L226 Difference]: Without dead ends: 105 [2018-10-03 09:06:50,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s Time 4.3s impTime 101 [2018-10-03 09:06:50,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-03 09:06:50,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-03 09:06:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-03 09:06:50,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-03 09:06:50,563 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-03 09:06:50,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:50,563 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-03 09:06:50,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-03 09:06:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-03 09:06:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-03 09:06:50,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:50,564 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-03 09:06:50,564 INFO L423 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:50,565 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:50,565 INFO L82 PathProgramCache]: Analyzing trace with hash 174995304, now seen corresponding path program 101 times [2018-10-03 09:06:50,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:50,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:50,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:50,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:50,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:06:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:55,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:06:55,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:06:55,472 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:06:55,551 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-03 09:06:55,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:06:55,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:06:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:06:55,775 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:06:55,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-03 09:06:55,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-03 09:06:55,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-03 09:06:55,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:06:55,776 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 104 states. [2018-10-03 09:06:56,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:06:56,096 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-03 09:06:56,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-03 09:06:56,096 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 104 [2018-10-03 09:06:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:06:56,097 INFO L225 Difference]: With dead ends: 108 [2018-10-03 09:06:56,098 INFO L226 Difference]: Without dead ends: 106 [2018-10-03 09:06:56,098 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.6s impTime 102 [2018-10-03 09:06:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-03 09:06:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-03 09:06:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-03 09:06:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-03 09:06:56,101 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-03 09:06:56,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:06:56,101 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-03 09:06:56,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-03 09:06:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-03 09:06:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-03 09:06:56,102 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:06:56,102 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-03 09:06:56,102 INFO L423 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:06:56,102 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:06:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1129885153, now seen corresponding path program 102 times [2018-10-03 09:06:56,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:06:56,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:06:56,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:56,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:06:56,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:06:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:00,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:00,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:00,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:01,006 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:01,073 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-03 09:07:01,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:01,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:01,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:01,293 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:01,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-03 09:07:01,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-03 09:07:01,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-03 09:07:01,295 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:01,295 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 105 states. [2018-10-03 09:07:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:01,640 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-03 09:07:01,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-03 09:07:01,640 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 105 [2018-10-03 09:07:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:01,641 INFO L225 Difference]: With dead ends: 109 [2018-10-03 09:07:01,641 INFO L226 Difference]: Without dead ends: 107 [2018-10-03 09:07:01,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s Time 4.5s impTime 103 [2018-10-03 09:07:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-03 09:07:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-03 09:07:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-03 09:07:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-03 09:07:01,644 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-03 09:07:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:01,644 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-03 09:07:01,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-03 09:07:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-03 09:07:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-03 09:07:01,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:01,646 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-03 09:07:01,646 INFO L423 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:01,646 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash 666699400, now seen corresponding path program 103 times [2018-10-03 09:07:01,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:01,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:01,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:01,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:04,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:04,816 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:04,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:04,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:05,164 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:05,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-03 09:07:05,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-03 09:07:05,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-03 09:07:05,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:05,165 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 106 states. [2018-10-03 09:07:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:05,400 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-03 09:07:05,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-03 09:07:05,400 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106 [2018-10-03 09:07:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:05,401 INFO L225 Difference]: With dead ends: 110 [2018-10-03 09:07:05,401 INFO L226 Difference]: Without dead ends: 108 [2018-10-03 09:07:05,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.8s impTime 104 [2018-10-03 09:07:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-03 09:07:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-03 09:07:05,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-03 09:07:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-03 09:07:05,403 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-03 09:07:05,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:05,403 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-03 09:07:05,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-03 09:07:05,403 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-03 09:07:05,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-03 09:07:05,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:05,404 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-03 09:07:05,404 INFO L423 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:05,404 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:05,404 INFO L82 PathProgramCache]: Analyzing trace with hash -807157055, now seen corresponding path program 104 times [2018-10-03 09:07:05,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:05,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:05,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:05,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:08,000 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:08,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:08,008 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-03 09:07:08,049 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-03 09:07:08,049 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:08,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:08,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:08,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-03 09:07:08,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-03 09:07:08,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-03 09:07:08,469 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:08,470 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 107 states. [2018-10-03 09:07:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:08,714 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-03 09:07:08,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-03 09:07:08,714 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 107 [2018-10-03 09:07:08,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:08,714 INFO L225 Difference]: With dead ends: 111 [2018-10-03 09:07:08,715 INFO L226 Difference]: Without dead ends: 109 [2018-10-03 09:07:08,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.3s impTime 105 [2018-10-03 09:07:08,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-03 09:07:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-03 09:07:08,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-03 09:07:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-03 09:07:08,717 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-03 09:07:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:08,717 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-03 09:07:08,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-03 09:07:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-03 09:07:08,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-03 09:07:08,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:08,718 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-03 09:07:08,718 INFO L423 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:08,718 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:08,718 INFO L82 PathProgramCache]: Analyzing trace with hash 747933096, now seen corresponding path program 105 times [2018-10-03 09:07:08,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:08,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:08,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:08,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:08,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:14,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:14,050 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:14,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-03 09:07:14,137 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-03 09:07:14,137 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:14,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:14,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:14,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-03 09:07:14,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-03 09:07:14,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-03 09:07:14,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:14,361 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 108 states. [2018-10-03 09:07:14,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:14,724 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-03 09:07:14,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-03 09:07:14,725 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 108 [2018-10-03 09:07:14,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:14,725 INFO L225 Difference]: With dead ends: 112 [2018-10-03 09:07:14,725 INFO L226 Difference]: Without dead ends: 110 [2018-10-03 09:07:14,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time 5.0s impTime 106 [2018-10-03 09:07:14,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-03 09:07:14,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-03 09:07:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-03 09:07:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-03 09:07:14,727 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-03 09:07:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:14,728 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-03 09:07:14,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-03 09:07:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-03 09:07:14,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-03 09:07:14,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:14,728 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-03 09:07:14,729 INFO L423 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:14,729 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:14,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1711087521, now seen corresponding path program 106 times [2018-10-03 09:07:14,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:14,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:14,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:14,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:14,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:18,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:18,260 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:18,267 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-03 09:07:18,310 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-03 09:07:18,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:18,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:18,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 0 proven. 5671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:18,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:18,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-03 09:07:18,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-03 09:07:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-03 09:07:18,684 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:18,684 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 109 states. [2018-10-03 09:07:19,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:19,005 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-03 09:07:19,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-03 09:07:19,005 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 109 [2018-10-03 09:07:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:19,006 INFO L225 Difference]: With dead ends: 113 [2018-10-03 09:07:19,006 INFO L226 Difference]: Without dead ends: 111 [2018-10-03 09:07:19,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.2s impTime 107 [2018-10-03 09:07:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-03 09:07:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-03 09:07:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-03 09:07:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-03 09:07:19,008 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 109 [2018-10-03 09:07:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:19,009 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-03 09:07:19,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-03 09:07:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-03 09:07:19,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-03 09:07:19,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:19,009 INFO L375 BasicCegarLoop]: trace histogram [107, 1, 1, 1] [2018-10-03 09:07:19,009 INFO L423 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:19,010 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:19,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1504103624, now seen corresponding path program 107 times [2018-10-03 09:07:19,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:19,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:19,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:19,010 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:19,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:24,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:24,431 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:24,438 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-03 09:07:24,510 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2018-10-03 09:07:24,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:24,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:24,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:24,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-03 09:07:24,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-03 09:07:24,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-03 09:07:24,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:24,733 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 110 states. [2018-10-03 09:07:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:25,121 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2018-10-03 09:07:25,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-03 09:07:25,122 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110 [2018-10-03 09:07:25,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:25,122 INFO L225 Difference]: With dead ends: 114 [2018-10-03 09:07:25,122 INFO L226 Difference]: Without dead ends: 112 [2018-10-03 09:07:25,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time 5.1s impTime 108 [2018-10-03 09:07:25,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-10-03 09:07:25,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2018-10-03 09:07:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-10-03 09:07:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2018-10-03 09:07:25,125 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 110 [2018-10-03 09:07:25,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:25,125 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2018-10-03 09:07:25,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-03 09:07:25,125 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2018-10-03 09:07:25,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-03 09:07:25,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:25,126 INFO L375 BasicCegarLoop]: trace histogram [108, 1, 1, 1] [2018-10-03 09:07:25,126 INFO L423 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:25,126 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:25,126 INFO L82 PathProgramCache]: Analyzing trace with hash -617429887, now seen corresponding path program 108 times [2018-10-03 09:07:25,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:25,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:25,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:25,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:25,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:27,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:27,853 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:27,860 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-03 09:07:27,935 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-03 09:07:27,935 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-03 09:07:27,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 0 proven. 5886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:28,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:28,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-03 09:07:28,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-03 09:07:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-03 09:07:28,162 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:28,162 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 111 states. [2018-10-03 09:07:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:28,401 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-10-03 09:07:28,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-03 09:07:28,402 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 111 [2018-10-03 09:07:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:28,402 INFO L225 Difference]: With dead ends: 115 [2018-10-03 09:07:28,402 INFO L226 Difference]: Without dead ends: 113 [2018-10-03 09:07:28,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time 2.4s impTime 109 [2018-10-03 09:07:28,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-10-03 09:07:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2018-10-03 09:07:28,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-10-03 09:07:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2018-10-03 09:07:28,405 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 111 [2018-10-03 09:07:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:28,406 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2018-10-03 09:07:28,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-03 09:07:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2018-10-03 09:07:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-03 09:07:28,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:28,407 INFO L375 BasicCegarLoop]: trace histogram [109, 1, 1, 1] [2018-10-03 09:07:28,408 INFO L423 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:28,408 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1960459288, now seen corresponding path program 109 times [2018-10-03 09:07:28,408 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:28,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:28,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:28,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-03 09:07:28,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:33,603 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-03 09:07:33,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-03 09:07:33,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-03 09:07:33,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-03 09:07:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-03 09:07:34,033 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-03 09:07:34,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-03 09:07:34,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-03 09:07:34,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-03 09:07:34,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-03 09:07:34,035 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 112 states. [2018-10-03 09:07:34,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-03 09:07:34,442 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2018-10-03 09:07:34,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-03 09:07:34,442 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 112 [2018-10-03 09:07:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-03 09:07:34,443 INFO L225 Difference]: With dead ends: 116 [2018-10-03 09:07:34,443 INFO L226 Difference]: Without dead ends: 114 [2018-10-03 09:07:34,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s Time 4.8s impTime 110 [2018-10-03 09:07:34,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-10-03 09:07:34,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-10-03 09:07:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-10-03 09:07:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-10-03 09:07:34,446 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 112 [2018-10-03 09:07:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-03 09:07:34,446 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-10-03 09:07:34,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-03 09:07:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-10-03 09:07:34,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-03 09:07:34,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-03 09:07:34,447 INFO L375 BasicCegarLoop]: trace histogram [110, 1, 1, 1] [2018-10-03 09:07:34,447 INFO L423 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-03 09:07:34,447 INFO L106 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-03 09:07:34,447 INFO L82 PathProgramCache]: Analyzing trace with hash -644697759, now seen corresponding path program 110 times [2018-10-03 09:07:34,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-03 09:07:34,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-03 09:07:34,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:34,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-03 09:07:34,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-03 09:07:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-03 09:07:35,168 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-03 09:07:35,172 WARN L205 ceAbstractionStarter]: Timeout [2018-10-03 09:07:35,173 INFO L202 PluginConnector]: Adding new model count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:07:35 BoogieIcfgContainer [2018-10-03 09:07:35,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-03 09:07:35,174 INFO L168 Benchmark]: Toolchain (without parser) took 236508.23 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -49.3 MB). Free memory was 1.5 GB in the beginning and 915.8 MB in the end (delta: 545.6 MB). Peak memory consumption was 496.4 MB. Max. memory is 7.1 GB. [2018-10-03 09:07:35,175 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 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. [2018-10-03 09:07:35,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.56 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. [2018-10-03 09:07:35,176 INFO L168 Benchmark]: Boogie Preprocessor took 21.01 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. [2018-10-03 09:07:35,177 INFO L168 Benchmark]: RCFGBuilder took 274.66 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. [2018-10-03 09:07:35,178 INFO L168 Benchmark]: TraceAbstraction took 236163.09 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -49.3 MB). Free memory was 1.4 GB in the beginning and 915.8 MB in the end (delta: 524.5 MB). Peak memory consumption was 475.2 MB. Max. memory is 7.1 GB. [2018-10-03 09:07:35,181 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 0.27 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 43.56 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 21.01 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 274.66 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 236163.09 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -49.3 MB). Free memory was 1.4 GB in the beginning and 915.8 MB in the end (delta: 524.5 MB). Peak memory consumption was 475.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 32]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 32). Cancelled while BasicCegarLoop was analyzing trace of length 114 with TraceHistMax 110, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 112 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 236.0s OverallTime, 111 OverallIterations, 110 TraceHistogramMax, 18.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 330 SDtfs, 0 SDslu, 4458 SDs, 0 SdLazy, 10673 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12428 GetRequests, 6323 SyntacticMatches, 0 SemanticMatches, 6105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 202.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 110 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 207.1s InterpolantComputationTime, 12647 NumberOfCodeBlocks, 12647 NumberOfCodeBlocksAsserted, 1776 NumberOfCheckSat, 12428 ConstructedInterpolants, 0 QuantifiedInterpolants, 2747462 SizeOfPredicates, 109 NumberOfNonLiveVariables, 19402 ConjunctsInSsa, 6231 ConjunctsInUnsatCore, 219 InterpolantComputations, 1 PerfectInterpolantSequences, 0/443630 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-07-35-190.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_2.i_3.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-07-35-190.csv Completed graceful shutdown